/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 01:35:29,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 01:35:29,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 01:35:29,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-11 01:35:29,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-11 01:35:29,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-11 01:35:29,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-11 01:35:29,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-11 01:35:29,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-11 01:35:29,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-11 01:35:29,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-11 01:35:29,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-11 01:35:29,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-11 01:35:29,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-11 01:35:29,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-11 01:35:29,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-11 01:35:29,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-11 01:35:29,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-11 01:35:29,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-11 01:35:29,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-11 01:35:29,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-11 01:35:29,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-11 01:35:29,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-11 01:35:29,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-11 01:35:29,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-11 01:35:29,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-11 01:35:29,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-11 01:35:29,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-11 01:35:29,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-11 01:35:29,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-11 01:35:29,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-11 01:35:29,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-11 01:35:29,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-11 01:35:29,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-11 01:35:29,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-11 01:35:29,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-11 01:35:29,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-11 01:35:29,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-11 01:35:29,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-11 01:35:29,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-11 01:35:29,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-11 01:35:29,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-11 01:35:29,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 01:35:29,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 01:35:29,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 01:35:29,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 01:35:29,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 01:35:29,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 01:35:29,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 01:35:29,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 01:35:29,090 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 01:35:29,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 01:35:29,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 01:35:29,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 01:35:29,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:35:29,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 01:35:29,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 01:35:29,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 01:35:29,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 01:35:29,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 01:35:29,274 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 01:35:29,274 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 01:35:29,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl [2022-02-11 01:35:29,276 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-3-nl.wvr.bpl' [2022-02-11 01:35:29,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 01:35:29,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 01:35:29,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 01:35:29,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 01:35:29,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 01:35:29,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,319 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 01:35:29,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 01:35:29,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 01:35:29,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 01:35:29,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 01:35:29,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 01:35:29,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 01:35:29,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 01:35:29,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 01:35:29,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/1) ... [2022-02-11 01:35:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:35:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:29,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-11 01:35:29,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-11 01:35:29,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 01:35:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 01:35:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 01:35:29,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 01:35:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 01:35:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 01:35:29,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 01:35:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 01:35:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 01:35:29,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-11 01:35:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-11 01:35:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-11 01:35:29,405 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 01:35:29,448 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 01:35:29,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 01:35:29,592 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 01:35:29,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 01:35:29,605 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 01:35:29,607 INFO L202 PluginConnector]: Adding new model queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:35:29 BoogieIcfgContainer [2022-02-11 01:35:29,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 01:35:29,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 01:35:29,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 01:35:29,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 01:35:29,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:35:29" (1/2) ... [2022-02-11 01:35:29,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8097009 and model type queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:35:29, skipping insertion in model container [2022-02-11 01:35:29,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:35:29" (2/2) ... [2022-02-11 01:35:29,627 INFO L112 eAbstractionObserver]: Analyzing ICFG queue-add-3-nl.wvr.bpl [2022-02-11 01:35:29,630 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 01:35:29,630 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 01:35:29,631 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 01:35:29,631 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 01:35:29,692 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-11 01:35:29,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 01:35:29,743 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 [2022-02-11 01:35:29,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-11 01:35:29,753 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 42 transitions, 108 flow [2022-02-11 01:35:29,853 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:35:29,876 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:29,877 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:29,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1996667167, now seen corresponding path program 1 times [2022-02-11 01:35:29,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:29,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960062393] [2022-02-11 01:35:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:29,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:29,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960062393] [2022-02-11 01:35:29,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960062393] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:35:29,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:35:29,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:35:29,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957539584] [2022-02-11 01:35:29,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:35:29,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 01:35:29,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 01:35:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,018 INFO L87 Difference]: Start difference. First operand has 1013 states, 1012 states have (on average 2.975296442687747) internal successors, (3011), 1012 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:30,090 INFO L93 Difference]: Finished difference Result 1112 states and 3308 transitions. [2022-02-11 01:35:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 01:35:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-02-11 01:35:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:30,114 INFO L225 Difference]: With dead ends: 1112 [2022-02-11 01:35:30,114 INFO L226 Difference]: Without dead ends: 1112 [2022-02-11 01:35:30,115 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,117 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:30,118 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 60 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:35:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-02-11 01:35:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2022-02-11 01:35:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 2.9774977497749773) internal successors, (3308), 1111 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 3308 transitions. [2022-02-11 01:35:30,261 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 3308 transitions. Word has length 22 [2022-02-11 01:35:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:30,262 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 3308 transitions. [2022-02-11 01:35:30,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 3308 transitions. [2022-02-11 01:35:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:35:30,267 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:30,267 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:30,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 01:35:30,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1213084767, now seen corresponding path program 1 times [2022-02-11 01:35:30,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:30,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129830023] [2022-02-11 01:35:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:30,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:30,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129830023] [2022-02-11 01:35:30,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129830023] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:35:30,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:35:30,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-11 01:35:30,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055797172] [2022-02-11 01:35:30,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:35:30,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 01:35:30,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 01:35:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,311 INFO L87 Difference]: Start difference. First operand 1112 states and 3308 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:30,348 INFO L93 Difference]: Finished difference Result 1165 states and 3465 transitions. [2022-02-11 01:35:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 01:35:30,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:35:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:30,355 INFO L225 Difference]: With dead ends: 1165 [2022-02-11 01:35:30,355 INFO L226 Difference]: Without dead ends: 1165 [2022-02-11 01:35:30,356 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,360 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:30,362 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:35:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-02-11 01:35:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-02-11 01:35:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 2.9768041237113403) internal successors, (3465), 1164 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 3465 transitions. [2022-02-11 01:35:30,396 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 3465 transitions. Word has length 28 [2022-02-11 01:35:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 3465 transitions. [2022-02-11 01:35:30,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 3465 transitions. [2022-02-11 01:35:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:35:30,400 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:30,400 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:30,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 01:35:30,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash -989860967, now seen corresponding path program 2 times [2022-02-11 01:35:30,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:30,402 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73757087] [2022-02-11 01:35:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:35:30,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:30,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73757087] [2022-02-11 01:35:30,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73757087] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:35:30,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:35:30,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:35:30,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537909431] [2022-02-11 01:35:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:35:30,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 01:35:30,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 01:35:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,444 INFO L87 Difference]: Start difference. First operand 1165 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:30,486 INFO L93 Difference]: Finished difference Result 1281 states and 3812 transitions. [2022-02-11 01:35:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 01:35:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-11 01:35:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:30,492 INFO L225 Difference]: With dead ends: 1281 [2022-02-11 01:35:30,492 INFO L226 Difference]: Without dead ends: 1281 [2022-02-11 01:35:30,492 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:35:30,498 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:30,500 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 60 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:35:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-02-11 01:35:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2022-02-11 01:35:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.978125) internal successors, (3812), 1280 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 3812 transitions. [2022-02-11 01:35:30,531 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 3812 transitions. Word has length 28 [2022-02-11 01:35:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:30,532 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 3812 transitions. [2022-02-11 01:35:30,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 3812 transitions. [2022-02-11 01:35:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:30,535 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:30,536 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:30,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 01:35:30,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 416907713, now seen corresponding path program 1 times [2022-02-11 01:35:30,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:30,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667680081] [2022-02-11 01:35:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:31,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:31,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667680081] [2022-02-11 01:35:31,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667680081] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:31,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066144051] [2022-02-11 01:35:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:31,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:31,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-11 01:35:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:31,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:31,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:31,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:32,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066144051] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:32,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:32,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:35:32,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331979120] [2022-02-11 01:35:32,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:32,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:35:32,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:35:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:35:32,161 INFO L87 Difference]: Start difference. First operand 1281 states and 3812 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:33,183 INFO L93 Difference]: Finished difference Result 2613 states and 7587 transitions. [2022-02-11 01:35:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:35:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:33,195 INFO L225 Difference]: With dead ends: 2613 [2022-02-11 01:35:33,195 INFO L226 Difference]: Without dead ends: 2598 [2022-02-11 01:35:33,195 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:35:33,196 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 384 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:33,196 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1142 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:35:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2022-02-11 01:35:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1446. [2022-02-11 01:35:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9577854671280277) internal successors, (4274), 1445 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4274 transitions. [2022-02-11 01:35:33,251 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4274 transitions. Word has length 33 [2022-02-11 01:35:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:33,251 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 4274 transitions. [2022-02-11 01:35:33,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4274 transitions. [2022-02-11 01:35:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:33,254 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:33,254 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:33,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:33,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:33,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -351824383, now seen corresponding path program 2 times [2022-02-11 01:35:33,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:33,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359992669] [2022-02-11 01:35:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:33,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:33,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359992669] [2022-02-11 01:35:33,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359992669] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:33,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447385993] [2022-02-11 01:35:33,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:35:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:33,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:33,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:33,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-11 01:35:33,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:35:33,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:33,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:35:33,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:34,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:35:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:34,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:34,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447385993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:34,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:34,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-11 01:35:34,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267950694] [2022-02-11 01:35:34,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:34,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:35:34,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:35:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:35:34,800 INFO L87 Difference]: Start difference. First operand 1446 states and 4274 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:35,992 INFO L93 Difference]: Finished difference Result 2643 states and 7655 transitions. [2022-02-11 01:35:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:35:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:36,003 INFO L225 Difference]: With dead ends: 2643 [2022-02-11 01:35:36,003 INFO L226 Difference]: Without dead ends: 2624 [2022-02-11 01:35:36,004 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:35:36,004 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 317 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:36,004 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1369 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:35:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2022-02-11 01:35:36,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1460. [2022-02-11 01:35:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 2.9588759424263196) internal successors, (4317), 1459 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 4317 transitions. [2022-02-11 01:35:36,043 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 4317 transitions. Word has length 33 [2022-02-11 01:35:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:36,043 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 4317 transitions. [2022-02-11 01:35:36,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 4317 transitions. [2022-02-11 01:35:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:36,046 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:36,046 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:36,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-11 01:35:36,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:36,252 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 524358081, now seen corresponding path program 3 times [2022-02-11 01:35:36,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:36,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457306549] [2022-02-11 01:35:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:36,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:36,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457306549] [2022-02-11 01:35:36,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457306549] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:36,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644568250] [2022-02-11 01:35:36,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:35:36,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:36,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:36,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-11 01:35:36,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:35:36,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:36,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:35:36,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:36,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:35:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:37,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:37,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644568250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:37,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:37,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-11 01:35:37,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131266133] [2022-02-11 01:35:37,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:37,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:35:37,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:35:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:35:37,594 INFO L87 Difference]: Start difference. First operand 1460 states and 4317 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:38,876 INFO L93 Difference]: Finished difference Result 2351 states and 6762 transitions. [2022-02-11 01:35:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:35:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:38,887 INFO L225 Difference]: With dead ends: 2351 [2022-02-11 01:35:38,887 INFO L226 Difference]: Without dead ends: 2336 [2022-02-11 01:35:38,888 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:35:38,889 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 346 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:38,890 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1306 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:35:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-02-11 01:35:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1458. [2022-02-11 01:35:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 2.959505833905285) internal successors, (4312), 1457 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4312 transitions. [2022-02-11 01:35:38,923 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4312 transitions. Word has length 33 [2022-02-11 01:35:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:38,924 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 4312 transitions. [2022-02-11 01:35:38,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4312 transitions. [2022-02-11 01:35:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:38,927 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:38,928 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:38,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:39,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:39,147 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash -210109243, now seen corresponding path program 4 times [2022-02-11 01:35:39,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:39,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407495761] [2022-02-11 01:35:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:39,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:39,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407495761] [2022-02-11 01:35:39,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407495761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:39,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017738627] [2022-02-11 01:35:39,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:35:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:39,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:39,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-11 01:35:39,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:35:39,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:39,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:39,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:40,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017738627] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:40,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:40,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:35:40,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826135448] [2022-02-11 01:35:40,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:40,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:35:40,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:35:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:35:40,350 INFO L87 Difference]: Start difference. First operand 1458 states and 4312 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:41,525 INFO L93 Difference]: Finished difference Result 2937 states and 8459 transitions. [2022-02-11 01:35:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 01:35:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:41,536 INFO L225 Difference]: With dead ends: 2937 [2022-02-11 01:35:41,536 INFO L226 Difference]: Without dead ends: 2922 [2022-02-11 01:35:41,537 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:35:41,537 INFO L934 BasicCegarLoop]: 137 mSDtfsCounter, 456 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:41,537 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1398 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:35:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-02-11 01:35:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1477. [2022-02-11 01:35:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 2.959349593495935) internal successors, (4368), 1476 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4368 transitions. [2022-02-11 01:35:41,588 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4368 transitions. Word has length 33 [2022-02-11 01:35:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:41,588 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 4368 transitions. [2022-02-11 01:35:41,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4368 transitions. [2022-02-11 01:35:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:41,591 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:41,591 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:41,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:41,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:41,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1493256703, now seen corresponding path program 5 times [2022-02-11 01:35:41,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:41,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429475374] [2022-02-11 01:35:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:42,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:42,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429475374] [2022-02-11 01:35:42,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429475374] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:42,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295359474] [2022-02-11 01:35:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:35:42,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:42,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:42,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:42,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-11 01:35:42,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:35:42,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:42,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:42,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:42,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:42,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295359474] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:42,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:42,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:35:42,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713195893] [2022-02-11 01:35:42,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:42,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:35:42,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:35:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:35:42,931 INFO L87 Difference]: Start difference. First operand 1477 states and 4368 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:44,089 INFO L93 Difference]: Finished difference Result 3196 states and 9103 transitions. [2022-02-11 01:35:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:35:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:44,108 INFO L225 Difference]: With dead ends: 3196 [2022-02-11 01:35:44,109 INFO L226 Difference]: Without dead ends: 3181 [2022-02-11 01:35:44,109 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:35:44,110 INFO L934 BasicCegarLoop]: 139 mSDtfsCounter, 471 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:44,110 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1318 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:35:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-02-11 01:35:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1477. [2022-02-11 01:35:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 2.959349593495935) internal successors, (4368), 1476 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4368 transitions. [2022-02-11 01:35:44,145 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4368 transitions. Word has length 33 [2022-02-11 01:35:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:44,145 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 4368 transitions. [2022-02-11 01:35:44,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4368 transitions. [2022-02-11 01:35:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:44,148 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:44,148 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:44,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:44,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:44,357 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1209675547, now seen corresponding path program 6 times [2022-02-11 01:35:44,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:44,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930352493] [2022-02-11 01:35:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:44,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:44,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930352493] [2022-02-11 01:35:44,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930352493] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:44,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981693562] [2022-02-11 01:35:44,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:35:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:44,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:44,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-11 01:35:44,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:35:44,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:35:44,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:45,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:45,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981693562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:45,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:45,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:35:45,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799840893] [2022-02-11 01:35:45,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:45,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:35:45,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:35:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:35:45,451 INFO L87 Difference]: Start difference. First operand 1477 states and 4368 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:46,238 INFO L93 Difference]: Finished difference Result 2828 states and 8191 transitions. [2022-02-11 01:35:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:35:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:46,245 INFO L225 Difference]: With dead ends: 2828 [2022-02-11 01:35:46,245 INFO L226 Difference]: Without dead ends: 2813 [2022-02-11 01:35:46,246 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:35:46,246 INFO L934 BasicCegarLoop]: 110 mSDtfsCounter, 405 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:46,247 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 852 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:35:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-02-11 01:35:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1561. [2022-02-11 01:35:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.943589743589744) internal successors, (4592), 1560 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 4592 transitions. [2022-02-11 01:35:46,280 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 4592 transitions. Word has length 33 [2022-02-11 01:35:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:46,280 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 4592 transitions. [2022-02-11 01:35:46,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 4592 transitions. [2022-02-11 01:35:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:46,284 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:46,284 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:46,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:46,506 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1245308595, now seen corresponding path program 7 times [2022-02-11 01:35:46,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:46,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717604292] [2022-02-11 01:35:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:46,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:46,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717604292] [2022-02-11 01:35:46,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717604292] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:46,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125813501] [2022-02-11 01:35:46,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:35:46,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:46,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:46,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-11 01:35:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:46,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:46,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:47,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:47,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125813501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:47,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:47,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-11 01:35:47,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330633826] [2022-02-11 01:35:47,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:47,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:35:47,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:35:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:35:47,685 INFO L87 Difference]: Start difference. First operand 1561 states and 4592 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:48,859 INFO L93 Difference]: Finished difference Result 2465 states and 7079 transitions. [2022-02-11 01:35:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:35:48,860 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:48,865 INFO L225 Difference]: With dead ends: 2465 [2022-02-11 01:35:48,865 INFO L226 Difference]: Without dead ends: 2450 [2022-02-11 01:35:48,866 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:35:48,866 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 355 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:48,866 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1347 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1295 Invalid, 0 Unknown, 121 Unchecked, 0.5s Time] [2022-02-11 01:35:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-02-11 01:35:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1624. [2022-02-11 01:35:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.9457794208256316) internal successors, (4781), 1623 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4781 transitions. [2022-02-11 01:35:48,909 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4781 transitions. Word has length 33 [2022-02-11 01:35:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:48,909 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 4781 transitions. [2022-02-11 01:35:48,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4781 transitions. [2022-02-11 01:35:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:48,913 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:48,913 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:48,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:49,123 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1474067439, now seen corresponding path program 8 times [2022-02-11 01:35:49,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:49,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675135428] [2022-02-11 01:35:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:49,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:49,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:49,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675135428] [2022-02-11 01:35:49,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675135428] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:49,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927910078] [2022-02-11 01:35:49,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:35:49,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:49,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:49,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:49,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-11 01:35:49,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:35:49,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:35:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:49,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:35:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:49,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:50,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927910078] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:50,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:50,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-11 01:35:50,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151800132] [2022-02-11 01:35:50,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:50,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:35:50,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:35:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:35:50,279 INFO L87 Difference]: Start difference. First operand 1624 states and 4781 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:51,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:51,284 INFO L93 Difference]: Finished difference Result 2828 states and 8159 transitions. [2022-02-11 01:35:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:35:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:51,291 INFO L225 Difference]: With dead ends: 2828 [2022-02-11 01:35:51,291 INFO L226 Difference]: Without dead ends: 2813 [2022-02-11 01:35:51,291 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:35:51,292 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 325 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:51,292 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1171 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:35:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-02-11 01:35:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1666. [2022-02-11 01:35:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.926126126126126) internal successors, (4872), 1665 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:51,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4872 transitions. [2022-02-11 01:35:51,325 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4872 transitions. Word has length 33 [2022-02-11 01:35:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:51,326 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4872 transitions. [2022-02-11 01:35:51,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4872 transitions. [2022-02-11 01:35:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:51,330 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:51,330 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:51,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:51,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-11 01:35:51,539 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1874168057, now seen corresponding path program 9 times [2022-02-11 01:35:51,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:51,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524194173] [2022-02-11 01:35:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:51,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:51,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:51,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524194173] [2022-02-11 01:35:51,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524194173] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:51,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975377122] [2022-02-11 01:35:51,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:35:51,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:51,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:51,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-11 01:35:51,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:35:51,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:35:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:52,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:35:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:52,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:52,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975377122] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:52,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:52,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:35:52,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895813816] [2022-02-11 01:35:52,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:52,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:35:52,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:35:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:35:52,710 INFO L87 Difference]: Start difference. First operand 1666 states and 4872 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:53,738 INFO L93 Difference]: Finished difference Result 3012 states and 8678 transitions. [2022-02-11 01:35:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:35:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:53,760 INFO L225 Difference]: With dead ends: 3012 [2022-02-11 01:35:53,760 INFO L226 Difference]: Without dead ends: 2997 [2022-02-11 01:35:53,761 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:35:53,761 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 421 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:53,761 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1193 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:35:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2022-02-11 01:35:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1708. [2022-02-11 01:35:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.919742237844171) internal successors, (4984), 1707 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 4984 transitions. [2022-02-11 01:35:53,793 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 4984 transitions. Word has length 33 [2022-02-11 01:35:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:53,793 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 4984 transitions. [2022-02-11 01:35:53,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 4984 transitions. [2022-02-11 01:35:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:53,796 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:53,797 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:53,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:54,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1719730539, now seen corresponding path program 10 times [2022-02-11 01:35:54,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:54,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390945358] [2022-02-11 01:35:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:54,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:54,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390945358] [2022-02-11 01:35:54,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390945358] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:54,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495296181] [2022-02-11 01:35:54,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:35:54,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:54,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:54,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:54,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-11 01:35:54,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:35:54,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:54,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:54,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:54,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:55,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495296181] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:55,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:55,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:35:55,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991485514] [2022-02-11 01:35:55,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:55,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:35:55,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:35:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:35:55,117 INFO L87 Difference]: Start difference. First operand 1708 states and 4984 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:56,234 INFO L93 Difference]: Finished difference Result 3300 states and 9373 transitions. [2022-02-11 01:35:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-11 01:35:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:56,242 INFO L225 Difference]: With dead ends: 3300 [2022-02-11 01:35:56,243 INFO L226 Difference]: Without dead ends: 3279 [2022-02-11 01:35:56,243 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:35:56,244 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 402 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:56,245 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1330 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1297 Invalid, 0 Unknown, 136 Unchecked, 0.5s Time] [2022-02-11 01:35:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-02-11 01:35:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1732. [2022-02-11 01:35:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 2.9254766031195842) internal successors, (5064), 1731 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 5064 transitions. [2022-02-11 01:35:56,281 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 5064 transitions. Word has length 33 [2022-02-11 01:35:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:56,281 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 5064 transitions. [2022-02-11 01:35:56,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 5064 transitions. [2022-02-11 01:35:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:56,284 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:56,284 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:56,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:56,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-11 01:35:56,504 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 143113699, now seen corresponding path program 11 times [2022-02-11 01:35:56,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:56,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034115314] [2022-02-11 01:35:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:56,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:56,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034115314] [2022-02-11 01:35:56,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034115314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:56,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513993700] [2022-02-11 01:35:56,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:35:56,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:56,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:56,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:56,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-11 01:35:56,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:35:56,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:56,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:35:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:57,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:57,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513993700] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:57,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:57,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:35:57,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093983221] [2022-02-11 01:35:57,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:57,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:35:57,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:35:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:35:57,510 INFO L87 Difference]: Start difference. First operand 1732 states and 5064 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:35:58,567 INFO L93 Difference]: Finished difference Result 3115 states and 8946 transitions. [2022-02-11 01:35:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 01:35:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:35:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:35:58,572 INFO L225 Difference]: With dead ends: 3115 [2022-02-11 01:35:58,572 INFO L226 Difference]: Without dead ends: 3100 [2022-02-11 01:35:58,573 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:35:58,573 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 425 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:35:58,573 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1335 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:35:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-02-11 01:35:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 1708. [2022-02-11 01:35:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.919742237844171) internal successors, (4984), 1707 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 4984 transitions. [2022-02-11 01:35:58,605 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 4984 transitions. Word has length 33 [2022-02-11 01:35:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:35:58,605 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 4984 transitions. [2022-02-11 01:35:58,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:35:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 4984 transitions. [2022-02-11 01:35:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:35:58,608 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:35:58,608 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:35:58,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-11 01:35:58,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-02-11 01:35:58,824 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:35:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:35:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash -679839295, now seen corresponding path program 12 times [2022-02-11 01:35:58,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:35:58,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660465361] [2022-02-11 01:35:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:35:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:35:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:35:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:59,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:35:59,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660465361] [2022-02-11 01:35:59,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660465361] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:35:59,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864532620] [2022-02-11 01:35:59,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:35:59,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:35:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:35:59,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:35:59,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-11 01:35:59,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:35:59,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:35:59,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:35:59,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:35:59,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:35:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:59,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:35:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:35:59,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864532620] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:35:59,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:35:59,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-11 01:35:59,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114339915] [2022-02-11 01:35:59,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:35:59,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:35:59,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:35:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:35:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:35:59,955 INFO L87 Difference]: Start difference. First operand 1708 states and 4984 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:01,218 INFO L93 Difference]: Finished difference Result 2497 states and 7196 transitions. [2022-02-11 01:36:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:36:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:01,222 INFO L225 Difference]: With dead ends: 2497 [2022-02-11 01:36:01,222 INFO L226 Difference]: Without dead ends: 2478 [2022-02-11 01:36:01,223 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:36:01,223 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 368 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:01,223 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1416 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-02-11 01:36:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 1734. [2022-02-11 01:36:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.9272937103289096) internal successors, (5073), 1733 states have internal predecessors, (5073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5073 transitions. [2022-02-11 01:36:01,253 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5073 transitions. Word has length 33 [2022-02-11 01:36:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:01,253 INFO L470 AbstractCegarLoop]: Abstraction has 1734 states and 5073 transitions. [2022-02-11 01:36:01,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5073 transitions. [2022-02-11 01:36:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:01,256 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:01,256 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:01,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-11 01:36:01,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-11 01:36:01,470 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 196343169, now seen corresponding path program 13 times [2022-02-11 01:36:01,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:01,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487652918] [2022-02-11 01:36:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:01,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:01,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487652918] [2022-02-11 01:36:01,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487652918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:01,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297418582] [2022-02-11 01:36:01,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:36:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:01,677 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:01,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-11 01:36:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:01,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:01,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:02,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:02,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297418582] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:02,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:02,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-11 01:36:02,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470292139] [2022-02-11 01:36:02,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:02,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 01:36:02,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 01:36:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-11 01:36:02,504 INFO L87 Difference]: Start difference. First operand 1734 states and 5073 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:03,651 INFO L93 Difference]: Finished difference Result 2497 states and 7190 transitions. [2022-02-11 01:36:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:36:03,651 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:03,655 INFO L225 Difference]: With dead ends: 2497 [2022-02-11 01:36:03,655 INFO L226 Difference]: Without dead ends: 2482 [2022-02-11 01:36:03,656 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:36:03,656 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 450 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:03,656 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 909 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:36:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-02-11 01:36:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1730. [2022-02-11 01:36:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 2.925968768074031) internal successors, (5059), 1729 states have internal predecessors, (5059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 5059 transitions. [2022-02-11 01:36:03,694 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 5059 transitions. Word has length 33 [2022-02-11 01:36:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:03,694 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 5059 transitions. [2022-02-11 01:36:03,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 5059 transitions. [2022-02-11 01:36:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:03,697 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:03,697 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:03,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:03,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-11 01:36:03,912 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1906792959, now seen corresponding path program 14 times [2022-02-11 01:36:03,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:03,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93214383] [2022-02-11 01:36:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:03,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:04,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:04,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93214383] [2022-02-11 01:36:04,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93214383] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:04,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833791801] [2022-02-11 01:36:04,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:36:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:04,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:04,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-11 01:36:04,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:04,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:04,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:04,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:04,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:04,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:04,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833791801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:04,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:04,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-11 01:36:04,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484897138] [2022-02-11 01:36:04,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:04,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:36:04,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:36:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:36:04,952 INFO L87 Difference]: Start difference. First operand 1730 states and 5059 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:05,790 INFO L93 Difference]: Finished difference Result 2669 states and 7766 transitions. [2022-02-11 01:36:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 01:36:05,790 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:05,794 INFO L225 Difference]: With dead ends: 2669 [2022-02-11 01:36:05,794 INFO L226 Difference]: Without dead ends: 2650 [2022-02-11 01:36:05,795 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 01:36:05,795 INFO L934 BasicCegarLoop]: 95 mSDtfsCounter, 284 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:05,795 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 1014 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:36:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-02-11 01:36:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1752. [2022-02-11 01:36:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-11 01:36:05,823 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-11 01:36:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:05,823 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-11 01:36:05,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-11 01:36:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:05,826 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:05,826 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:05,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:06,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:06,044 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash 555256933, now seen corresponding path program 15 times [2022-02-11 01:36:06,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:06,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535160869] [2022-02-11 01:36:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:06,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:06,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535160869] [2022-02-11 01:36:06,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535160869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:06,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023051322] [2022-02-11 01:36:06,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:36:06,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:06,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:06,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:06,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-11 01:36:06,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:36:06,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:06,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:36:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:06,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:07,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023051322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:07,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:07,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-11 01:36:07,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115754349] [2022-02-11 01:36:07,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:07,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:36:07,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:36:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:36:07,048 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:07,887 INFO L93 Difference]: Finished difference Result 2695 states and 7817 transitions. [2022-02-11 01:36:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 01:36:07,887 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:07,891 INFO L225 Difference]: With dead ends: 2695 [2022-02-11 01:36:07,891 INFO L226 Difference]: Without dead ends: 2680 [2022-02-11 01:36:07,891 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:36:07,892 INFO L934 BasicCegarLoop]: 95 mSDtfsCounter, 297 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:07,892 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1078 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:36:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-02-11 01:36:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1752. [2022-02-11 01:36:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-11 01:36:07,918 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-11 01:36:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-11 01:36:07,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-11 01:36:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:07,922 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:07,922 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:07,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:08,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-11 01:36:08,129 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash -300690715, now seen corresponding path program 16 times [2022-02-11 01:36:08,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:08,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360530392] [2022-02-11 01:36:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:08,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:08,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360530392] [2022-02-11 01:36:08,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360530392] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:08,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43620141] [2022-02-11 01:36:08,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:36:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:08,420 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:08,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-11 01:36:08,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:36:08,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:08,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:08,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:08,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:09,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43620141] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:09,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:09,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-11 01:36:09,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894474964] [2022-02-11 01:36:09,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:09,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 01:36:09,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 01:36:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-02-11 01:36:09,245 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:10,499 INFO L93 Difference]: Finished difference Result 2604 states and 7441 transitions. [2022-02-11 01:36:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:36:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:10,504 INFO L225 Difference]: With dead ends: 2604 [2022-02-11 01:36:10,504 INFO L226 Difference]: Without dead ends: 2589 [2022-02-11 01:36:10,504 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:36:10,505 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 415 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:10,505 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1184 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2022-02-11 01:36:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1773. [2022-02-11 01:36:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 2.9283295711060946) internal successors, (5189), 1772 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 5189 transitions. [2022-02-11 01:36:10,531 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 5189 transitions. Word has length 33 [2022-02-11 01:36:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:10,531 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 5189 transitions. [2022-02-11 01:36:10,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 5189 transitions. [2022-02-11 01:36:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:10,534 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:10,534 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:10,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:10,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:10,736 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1967089301, now seen corresponding path program 17 times [2022-02-11 01:36:10,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:10,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801722497] [2022-02-11 01:36:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:10,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:10,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801722497] [2022-02-11 01:36:10,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801722497] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:10,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886723169] [2022-02-11 01:36:10,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:36:10,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:10,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:10,923 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:10,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-11 01:36:10,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:36:10,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:10,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:11,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:11,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886723169] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:11,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:11,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-02-11 01:36:11,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688498359] [2022-02-11 01:36:11,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:11,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 01:36:11,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 01:36:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-02-11 01:36:11,701 INFO L87 Difference]: Start difference. First operand 1773 states and 5189 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:12,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:12,783 INFO L93 Difference]: Finished difference Result 2575 states and 7376 transitions. [2022-02-11 01:36:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-11 01:36:12,783 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:12,787 INFO L225 Difference]: With dead ends: 2575 [2022-02-11 01:36:12,787 INFO L226 Difference]: Without dead ends: 2560 [2022-02-11 01:36:12,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:36:12,788 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 362 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:12,788 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 930 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:36:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-02-11 01:36:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1752. [2022-02-11 01:36:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-11 01:36:12,813 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-11 01:36:12,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:12,813 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-11 01:36:12,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-11 01:36:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:12,816 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:12,816 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:12,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:13,032 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1441716885, now seen corresponding path program 18 times [2022-02-11 01:36:13,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:13,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902328941] [2022-02-11 01:36:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:13,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:13,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902328941] [2022-02-11 01:36:13,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902328941] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:13,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462592717] [2022-02-11 01:36:13,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:36:13,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:13,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:13,238 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:13,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-11 01:36:13,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:36:13,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:13,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:13,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:13,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:14,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462592717] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:14,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:14,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:36:14,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986048137] [2022-02-11 01:36:14,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:14,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:14,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:14,192 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:15,360 INFO L93 Difference]: Finished difference Result 3000 states and 8661 transitions. [2022-02-11 01:36:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 01:36:15,362 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:15,367 INFO L225 Difference]: With dead ends: 3000 [2022-02-11 01:36:15,367 INFO L226 Difference]: Without dead ends: 2981 [2022-02-11 01:36:15,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:36:15,368 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 390 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:15,368 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1336 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-02-11 01:36:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1760. [2022-02-11 01:36:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 2.920977828311541) internal successors, (5138), 1759 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5138 transitions. [2022-02-11 01:36:15,411 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5138 transitions. Word has length 33 [2022-02-11 01:36:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:15,411 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 5138 transitions. [2022-02-11 01:36:15,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5138 transitions. [2022-02-11 01:36:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:15,414 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:15,414 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:15,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:15,616 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1977067947, now seen corresponding path program 19 times [2022-02-11 01:36:15,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:15,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768241061] [2022-02-11 01:36:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:15,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:15,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:15,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768241061] [2022-02-11 01:36:15,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768241061] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:15,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394412834] [2022-02-11 01:36:15,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:36:15,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:15,890 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:15,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-11 01:36:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:15,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:15,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:16,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:16,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394412834] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:16,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:16,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:36:16,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607460887] [2022-02-11 01:36:16,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:16,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:36:16,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:16,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:36:16,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:36:16,738 INFO L87 Difference]: Start difference. First operand 1760 states and 5138 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:18,017 INFO L93 Difference]: Finished difference Result 2579 states and 7434 transitions. [2022-02-11 01:36:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:36:18,018 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:18,021 INFO L225 Difference]: With dead ends: 2579 [2022-02-11 01:36:18,021 INFO L226 Difference]: Without dead ends: 2564 [2022-02-11 01:36:18,022 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:36:18,022 INFO L934 BasicCegarLoop]: 131 mSDtfsCounter, 475 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:18,022 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1166 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:36:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-02-11 01:36:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1752. [2022-02-11 01:36:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-11 01:36:18,046 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-11 01:36:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:18,046 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-11 01:36:18,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-11 01:36:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:18,049 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:18,049 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:18,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:18,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:18,249 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -703095831, now seen corresponding path program 20 times [2022-02-11 01:36:18,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:18,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278359670] [2022-02-11 01:36:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:18,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:18,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278359670] [2022-02-11 01:36:18,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278359670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:18,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691109460] [2022-02-11 01:36:18,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:36:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:18,477 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:18,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-11 01:36:18,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:18,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:18,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:18,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:18,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:18,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:19,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691109460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:19,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:19,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:36:19,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167744305] [2022-02-11 01:36:19,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:19,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:19,412 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:20,825 INFO L93 Difference]: Finished difference Result 2751 states and 7877 transitions. [2022-02-11 01:36:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 01:36:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:20,830 INFO L225 Difference]: With dead ends: 2751 [2022-02-11 01:36:20,830 INFO L226 Difference]: Without dead ends: 2736 [2022-02-11 01:36:20,831 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=393, Invalid=1959, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:36:20,831 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 393 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:20,831 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1489 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-02-11 01:36:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1794. [2022-02-11 01:36:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 2.92526491912995) internal successors, (5245), 1793 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 5245 transitions. [2022-02-11 01:36:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 5245 transitions. Word has length 33 [2022-02-11 01:36:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:20,857 INFO L470 AbstractCegarLoop]: Abstraction has 1794 states and 5245 transitions. [2022-02-11 01:36:20,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 5245 transitions. [2022-02-11 01:36:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:20,860 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:20,860 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:20,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:21,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-11 01:36:21,063 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1925472879, now seen corresponding path program 21 times [2022-02-11 01:36:21,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:21,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094283021] [2022-02-11 01:36:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:21,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:21,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094283021] [2022-02-11 01:36:21,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094283021] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:21,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166949139] [2022-02-11 01:36:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:36:21,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:21,254 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:21,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-11 01:36:21,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:36:21,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:21,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:36:21,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:21,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:22,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166949139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:22,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:22,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:36:22,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903634483] [2022-02-11 01:36:22,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:22,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:22,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:22,106 INFO L87 Difference]: Start difference. First operand 1794 states and 5245 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:23,320 INFO L93 Difference]: Finished difference Result 3076 states and 8840 transitions. [2022-02-11 01:36:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:36:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:23,325 INFO L225 Difference]: With dead ends: 3076 [2022-02-11 01:36:23,325 INFO L226 Difference]: Without dead ends: 3061 [2022-02-11 01:36:23,326 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:36:23,326 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 367 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:23,326 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1349 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2022-02-11 01:36:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1752. [2022-02-11 01:36:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1751 states have (on average 2.9194745859508853) internal successors, (5112), 1751 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 5112 transitions. [2022-02-11 01:36:23,423 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 5112 transitions. Word has length 33 [2022-02-11 01:36:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:23,423 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 5112 transitions. [2022-02-11 01:36:23,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 5112 transitions. [2022-02-11 01:36:23,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:23,426 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:23,426 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:23,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-11 01:36:23,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-11 01:36:23,627 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash 503592163, now seen corresponding path program 22 times [2022-02-11 01:36:23,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:23,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496582608] [2022-02-11 01:36:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:23,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:23,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496582608] [2022-02-11 01:36:23,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496582608] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:23,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227968648] [2022-02-11 01:36:23,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:36:23,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:23,822 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:23,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-11 01:36:23,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:36:23,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:23,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:23,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:24,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:24,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227968648] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:24,626 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:24,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:36:24,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942967182] [2022-02-11 01:36:24,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:24,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:36:24,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:36:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:36:24,627 INFO L87 Difference]: Start difference. First operand 1752 states and 5112 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:26,027 INFO L93 Difference]: Finished difference Result 3531 states and 10017 transitions. [2022-02-11 01:36:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:36:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:26,033 INFO L225 Difference]: With dead ends: 3531 [2022-02-11 01:36:26,033 INFO L226 Difference]: Without dead ends: 3512 [2022-02-11 01:36:26,034 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=1831, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:36:26,034 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 391 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:26,034 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 1405 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-02-11 01:36:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1756. [2022-02-11 01:36:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 2.920797720797721) internal successors, (5126), 1755 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 5126 transitions. [2022-02-11 01:36:26,063 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 5126 transitions. Word has length 33 [2022-02-11 01:36:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:26,063 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 5126 transitions. [2022-02-11 01:36:26,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 5126 transitions. [2022-02-11 01:36:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:26,066 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:26,066 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:26,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-11 01:36:26,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:26,267 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1379774627, now seen corresponding path program 23 times [2022-02-11 01:36:26,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:26,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633869258] [2022-02-11 01:36:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:26,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:26,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:26,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633869258] [2022-02-11 01:36:26,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633869258] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:26,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648095307] [2022-02-11 01:36:26,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:36:26,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:26,462 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:26,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-11 01:36:26,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:26,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:26,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:26,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:26,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:27,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648095307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:27,307 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:27,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:36:27,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458542614] [2022-02-11 01:36:27,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:27,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:36:27,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:36:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:36:27,308 INFO L87 Difference]: Start difference. First operand 1756 states and 5126 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:28,868 INFO L93 Difference]: Finished difference Result 2999 states and 8496 transitions. [2022-02-11 01:36:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:36:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:28,873 INFO L225 Difference]: With dead ends: 2999 [2022-02-11 01:36:28,873 INFO L226 Difference]: Without dead ends: 2984 [2022-02-11 01:36:28,873 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:36:28,874 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 507 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:28,874 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1195 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-02-11 01:36:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1744. [2022-02-11 01:36:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 2.919104991394148) internal successors, (5088), 1743 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 5088 transitions. [2022-02-11 01:36:28,905 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 5088 transitions. Word has length 33 [2022-02-11 01:36:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 1744 states and 5088 transitions. [2022-02-11 01:36:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 5088 transitions. [2022-02-11 01:36:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:28,908 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:28,908 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:28,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:29,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:29,115 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1508202277, now seen corresponding path program 24 times [2022-02-11 01:36:29,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:29,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496376408] [2022-02-11 01:36:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:29,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:29,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496376408] [2022-02-11 01:36:29,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496376408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:29,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684888333] [2022-02-11 01:36:29,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:36:29,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:29,307 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:29,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-11 01:36:29,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:36:29,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:29,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:29,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:29,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:29,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:30,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684888333] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:30,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:30,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:36:30,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886488227] [2022-02-11 01:36:30,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:30,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:30,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:30,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:30,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:30,267 INFO L87 Difference]: Start difference. First operand 1744 states and 5088 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:32,077 INFO L93 Difference]: Finished difference Result 2872 states and 8162 transitions. [2022-02-11 01:36:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:36:32,077 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:32,082 INFO L225 Difference]: With dead ends: 2872 [2022-02-11 01:36:32,082 INFO L226 Difference]: Without dead ends: 2857 [2022-02-11 01:36:32,083 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=453, Invalid=2409, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:36:32,083 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 549 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:32,083 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1434 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:36:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-02-11 01:36:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1765. [2022-02-11 01:36:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 2.9280045351473922) internal successors, (5165), 1764 states have internal predecessors, (5165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 5165 transitions. [2022-02-11 01:36:32,116 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 5165 transitions. Word has length 33 [2022-02-11 01:36:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:32,116 INFO L470 AbstractCegarLoop]: Abstraction has 1765 states and 5165 transitions. [2022-02-11 01:36:32,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 5165 transitions. [2022-02-11 01:36:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:32,119 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:32,119 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:32,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:32,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-11 01:36:32,333 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:32,334 INFO L85 PathProgramCache]: Analyzing trace with hash -158196309, now seen corresponding path program 25 times [2022-02-11 01:36:32,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:32,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082812107] [2022-02-11 01:36:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:32,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:32,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082812107] [2022-02-11 01:36:32,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082812107] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:32,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673138970] [2022-02-11 01:36:32,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:36:32,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:32,592 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:32,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-11 01:36:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:33,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:33,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673138970] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:33,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:33,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:36:33,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395198820] [2022-02-11 01:36:33,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:33,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:36:33,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:36:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:36:33,430 INFO L87 Difference]: Start difference. First operand 1765 states and 5165 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:34,469 INFO L93 Difference]: Finished difference Result 3246 states and 9268 transitions. [2022-02-11 01:36:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:36:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:34,474 INFO L225 Difference]: With dead ends: 3246 [2022-02-11 01:36:34,474 INFO L226 Difference]: Without dead ends: 3231 [2022-02-11 01:36:34,475 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:36:34,475 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 409 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:34,475 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1124 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:36:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2022-02-11 01:36:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1702. [2022-02-11 01:36:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.9253380364491477) internal successors, (4976), 1701 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4976 transitions. [2022-02-11 01:36:34,502 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4976 transitions. Word has length 33 [2022-02-11 01:36:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4976 transitions. [2022-02-11 01:36:34,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4976 transitions. [2022-02-11 01:36:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:34,505 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:34,505 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:34,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-11 01:36:34,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-11 01:36:34,705 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash 758312315, now seen corresponding path program 26 times [2022-02-11 01:36:34,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:34,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067242304] [2022-02-11 01:36:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:34,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:34,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067242304] [2022-02-11 01:36:34,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067242304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:34,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959038452] [2022-02-11 01:36:34,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:36:34,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:34,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:34,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-11 01:36:34,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:34,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:35,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:35,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:35,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959038452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:35,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:35,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-11 01:36:35,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921313820] [2022-02-11 01:36:35,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:35,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:35,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:35,916 INFO L87 Difference]: Start difference. First operand 1702 states and 4976 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:37,090 INFO L93 Difference]: Finished difference Result 3477 states and 9924 transitions. [2022-02-11 01:36:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 01:36:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:37,097 INFO L225 Difference]: With dead ends: 3477 [2022-02-11 01:36:37,097 INFO L226 Difference]: Without dead ends: 3462 [2022-02-11 01:36:37,097 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:36:37,098 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:37,098 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1353 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-02-11 01:36:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 1726. [2022-02-11 01:36:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 2.926376811594203) internal successors, (5048), 1725 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 5048 transitions. [2022-02-11 01:36:37,129 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 5048 transitions. Word has length 33 [2022-02-11 01:36:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:37,129 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 5048 transitions. [2022-02-11 01:36:37,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 5048 transitions. [2022-02-11 01:36:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:37,132 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:37,132 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:37,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:37,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-11 01:36:37,334 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -10419781, now seen corresponding path program 27 times [2022-02-11 01:36:37,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:37,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612516934] [2022-02-11 01:36:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:37,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:37,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:37,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612516934] [2022-02-11 01:36:37,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612516934] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:37,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322529124] [2022-02-11 01:36:37,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:36:37,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:37,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:37,571 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:37,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-11 01:36:37,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:36:37,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:37,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:37,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:37,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:38,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:38,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322529124] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:38,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:38,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-11 01:36:38,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729528463] [2022-02-11 01:36:38,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:36:38,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:36:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:36:38,535 INFO L87 Difference]: Start difference. First operand 1726 states and 5048 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:39,832 INFO L93 Difference]: Finished difference Result 3304 states and 9446 transitions. [2022-02-11 01:36:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:36:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:39,838 INFO L225 Difference]: With dead ends: 3304 [2022-02-11 01:36:39,839 INFO L226 Difference]: Without dead ends: 3285 [2022-02-11 01:36:39,839 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=254, Invalid=1638, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:36:39,839 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 384 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:39,840 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1522 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-02-11 01:36:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 1738. [2022-02-11 01:36:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 2.9280368451352907) internal successors, (5086), 1737 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 5086 transitions. [2022-02-11 01:36:39,867 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 5086 transitions. Word has length 33 [2022-02-11 01:36:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:39,867 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 5086 transitions. [2022-02-11 01:36:39,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 5086 transitions. [2022-02-11 01:36:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:39,870 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:39,870 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:39,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:40,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:40,071 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 865762683, now seen corresponding path program 28 times [2022-02-11 01:36:40,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:40,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187973064] [2022-02-11 01:36:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:40,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:40,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:40,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187973064] [2022-02-11 01:36:40,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187973064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:40,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275773484] [2022-02-11 01:36:40,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:36:40,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:40,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:40,280 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:40,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-11 01:36:40,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:36:40,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:40,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:40,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:40,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:41,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275773484] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:41,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:41,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-11 01:36:41,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39343006] [2022-02-11 01:36:41,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:41,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:36:41,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:36:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:36:41,105 INFO L87 Difference]: Start difference. First operand 1738 states and 5086 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:42,517 INFO L93 Difference]: Finished difference Result 2959 states and 8420 transitions. [2022-02-11 01:36:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:36:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:42,522 INFO L225 Difference]: With dead ends: 2959 [2022-02-11 01:36:42,522 INFO L226 Difference]: Without dead ends: 2944 [2022-02-11 01:36:42,522 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:36:42,523 INFO L934 BasicCegarLoop]: 135 mSDtfsCounter, 453 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:42,523 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1533 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2022-02-11 01:36:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1734. [2022-02-11 01:36:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.9267166762839008) internal successors, (5072), 1733 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 5072 transitions. [2022-02-11 01:36:42,550 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 5072 transitions. Word has length 33 [2022-02-11 01:36:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 1734 states and 5072 transitions. [2022-02-11 01:36:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 5072 transitions. [2022-02-11 01:36:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:42,553 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:42,553 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:42,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:42,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:42,759 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 131295359, now seen corresponding path program 29 times [2022-02-11 01:36:42,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:42,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004357552] [2022-02-11 01:36:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:42,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:42,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004357552] [2022-02-11 01:36:42,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004357552] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:42,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431400102] [2022-02-11 01:36:42,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:36:42,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:42,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:42,997 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:42,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-11 01:36:43,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:43,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:43,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:43,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:43,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:43,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431400102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:43,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:43,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-11 01:36:43,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380334709] [2022-02-11 01:36:43,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:43,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:36:43,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:36:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:36:43,818 INFO L87 Difference]: Start difference. First operand 1734 states and 5072 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:45,171 INFO L93 Difference]: Finished difference Result 3396 states and 9730 transitions. [2022-02-11 01:36:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-11 01:36:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:45,177 INFO L225 Difference]: With dead ends: 3396 [2022-02-11 01:36:45,177 INFO L226 Difference]: Without dead ends: 3381 [2022-02-11 01:36:45,178 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=2196, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 01:36:45,178 INFO L934 BasicCegarLoop]: 142 mSDtfsCounter, 532 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:45,178 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 1675 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:36:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2022-02-11 01:36:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 1730. [2022-02-11 01:36:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 2.926547137073453) internal successors, (5060), 1729 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 5060 transitions. [2022-02-11 01:36:45,208 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 5060 transitions. Word has length 33 [2022-02-11 01:36:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:45,208 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 5060 transitions. [2022-02-11 01:36:45,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 5060 transitions. [2022-02-11 01:36:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:45,211 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:45,211 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:45,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:45,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:45,413 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1151852101, now seen corresponding path program 30 times [2022-02-11 01:36:45,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:45,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949343653] [2022-02-11 01:36:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:45,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:45,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949343653] [2022-02-11 01:36:45,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949343653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:45,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797353035] [2022-02-11 01:36:45,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:36:45,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:45,633 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:45,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-11 01:36:45,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:36:45,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:45,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:45,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:45,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:46,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:46,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797353035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:46,584 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:46,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-11 01:36:46,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619589108] [2022-02-11 01:36:46,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:46,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:46,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:46,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:46,585 INFO L87 Difference]: Start difference. First operand 1730 states and 5060 transitions. Second operand has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:48,083 INFO L93 Difference]: Finished difference Result 3775 states and 10681 transitions. [2022-02-11 01:36:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:36:48,083 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:48,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:48,089 INFO L225 Difference]: With dead ends: 3775 [2022-02-11 01:36:48,089 INFO L226 Difference]: Without dead ends: 3760 [2022-02-11 01:36:48,089 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=1946, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:36:48,089 INFO L934 BasicCegarLoop]: 134 mSDtfsCounter, 473 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:48,090 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1644 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:36:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2022-02-11 01:36:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 1710. [2022-02-11 01:36:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 2.925687536571094) internal successors, (5000), 1709 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 5000 transitions. [2022-02-11 01:36:48,126 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 5000 transitions. Word has length 33 [2022-02-11 01:36:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:48,126 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 5000 transitions. [2022-02-11 01:36:48,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 5000 transitions. [2022-02-11 01:36:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:48,129 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:48,129 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:48,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:48,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-11 01:36:48,345 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1721940609, now seen corresponding path program 31 times [2022-02-11 01:36:48,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:48,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309834978] [2022-02-11 01:36:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:48,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:48,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309834978] [2022-02-11 01:36:48,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309834978] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:48,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868252589] [2022-02-11 01:36:48,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:36:48,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:48,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:48,546 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:48,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-11 01:36:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:48,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:48,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:48,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:49,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868252589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:49,291 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:49,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-11 01:36:49,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191708884] [2022-02-11 01:36:49,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:49,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:36:49,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:36:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:36:49,292 INFO L87 Difference]: Start difference. First operand 1710 states and 5000 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:50,614 INFO L93 Difference]: Finished difference Result 3763 states and 10685 transitions. [2022-02-11 01:36:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 01:36:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:50,620 INFO L225 Difference]: With dead ends: 3763 [2022-02-11 01:36:50,620 INFO L226 Difference]: Without dead ends: 3748 [2022-02-11 01:36:50,621 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:36:50,621 INFO L934 BasicCegarLoop]: 144 mSDtfsCounter, 361 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:50,621 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1906 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:36:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-02-11 01:36:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 1731. [2022-02-11 01:36:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1730 states have (on average 2.921387283236994) internal successors, (5054), 1730 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 5054 transitions. [2022-02-11 01:36:50,651 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 5054 transitions. Word has length 33 [2022-02-11 01:36:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:50,651 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 5054 transitions. [2022-02-11 01:36:50,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 5054 transitions. [2022-02-11 01:36:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:50,654 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:50,654 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:50,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:50,854 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -485112675, now seen corresponding path program 32 times [2022-02-11 01:36:50,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:50,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592252927] [2022-02-11 01:36:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:51,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:51,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592252927] [2022-02-11 01:36:51,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592252927] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:51,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987166236] [2022-02-11 01:36:51,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:36:51,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:51,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:51,058 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:51,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-11 01:36:51,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:36:51,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:51,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:51,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:51,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:51,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:52,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987166236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:52,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:52,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-11 01:36:52,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265989208] [2022-02-11 01:36:52,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:36:52,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:36:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:36:52,004 INFO L87 Difference]: Start difference. First operand 1731 states and 5054 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:53,186 INFO L93 Difference]: Finished difference Result 3664 states and 10402 transitions. [2022-02-11 01:36:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:36:53,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:53,192 INFO L225 Difference]: With dead ends: 3664 [2022-02-11 01:36:53,192 INFO L226 Difference]: Without dead ends: 3649 [2022-02-11 01:36:53,193 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:36:53,193 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 340 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:53,193 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1674 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:36:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-02-11 01:36:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1768. [2022-02-11 01:36:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1767 states have (on average 2.9134125636672326) internal successors, (5148), 1767 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 5148 transitions. [2022-02-11 01:36:53,237 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 5148 transitions. Word has length 33 [2022-02-11 01:36:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:53,238 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 5148 transitions. [2022-02-11 01:36:53,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 5148 transitions. [2022-02-11 01:36:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:53,240 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:53,240 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:53,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:53,451 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash 68792961, now seen corresponding path program 33 times [2022-02-11 01:36:53,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:53,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182957463] [2022-02-11 01:36:53,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:53,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:53,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182957463] [2022-02-11 01:36:53,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182957463] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:53,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933837584] [2022-02-11 01:36:53,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:36:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:53,649 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:53,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-11 01:36:53,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:36:53,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:53,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:36:53,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:53,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:36:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:54,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:54,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933837584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:54,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:54,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-11 01:36:54,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761942909] [2022-02-11 01:36:54,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:54,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:36:54,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:36:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:36:54,693 INFO L87 Difference]: Start difference. First operand 1768 states and 5148 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:55,766 INFO L93 Difference]: Finished difference Result 3390 states and 9689 transitions. [2022-02-11 01:36:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:36:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:55,772 INFO L225 Difference]: With dead ends: 3390 [2022-02-11 01:36:55,772 INFO L226 Difference]: Without dead ends: 3375 [2022-02-11 01:36:55,772 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:36:55,773 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 373 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:55,773 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1420 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:36:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-02-11 01:36:55,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1852. [2022-02-11 01:36:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 2.902215018908698) internal successors, (5372), 1851 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 5372 transitions. [2022-02-11 01:36:55,803 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 5372 transitions. Word has length 33 [2022-02-11 01:36:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:55,803 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 5372 transitions. [2022-02-11 01:36:55,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 5372 transitions. [2022-02-11 01:36:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:55,806 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:55,806 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:55,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-11 01:36:56,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-11 01:36:56,008 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash 226317897, now seen corresponding path program 34 times [2022-02-11 01:36:56,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:56,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910394309] [2022-02-11 01:36:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:56,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:56,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:56,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910394309] [2022-02-11 01:36:56,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910394309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:56,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520630177] [2022-02-11 01:36:56,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:36:56,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:56,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:56,224 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:56,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-11 01:36:56,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:36:56,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:56,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:56,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:57,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520630177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:57,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:57,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-11 01:36:57,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192481840] [2022-02-11 01:36:57,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:57,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:36:57,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:36:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:36:57,048 INFO L87 Difference]: Start difference. First operand 1852 states and 5372 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:36:58,390 INFO L93 Difference]: Finished difference Result 3075 states and 8701 transitions. [2022-02-11 01:36:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:36:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:36:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:36:58,395 INFO L225 Difference]: With dead ends: 3075 [2022-02-11 01:36:58,396 INFO L226 Difference]: Without dead ends: 3060 [2022-02-11 01:36:58,396 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1849, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:36:58,397 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 370 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:36:58,397 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1806 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1660 Invalid, 0 Unknown, 287 Unchecked, 0.6s Time] [2022-02-11 01:36:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-02-11 01:36:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 1915. [2022-02-11 01:36:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 2.9054336468129573) internal successors, (5561), 1914 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 5561 transitions. [2022-02-11 01:36:58,424 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 5561 transitions. Word has length 33 [2022-02-11 01:36:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:36:58,424 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 5561 transitions. [2022-02-11 01:36:58,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:36:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 5561 transitions. [2022-02-11 01:36:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:36:58,427 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:36:58,427 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:36:58,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-11 01:36:58,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-11 01:36:58,629 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:36:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:36:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2440947, now seen corresponding path program 35 times [2022-02-11 01:36:58,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:36:58,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631908550] [2022-02-11 01:36:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:36:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:36:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:36:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:58,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:36:58,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631908550] [2022-02-11 01:36:58,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631908550] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:36:58,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029880650] [2022-02-11 01:36:58,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:36:58,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:36:58,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:36:58,852 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:36:58,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-11 01:36:58,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:36:58,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:36:58,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:36:58,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:36:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:59,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:36:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:36:59,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029880650] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:36:59,610 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:36:59,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-11 01:36:59,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983362166] [2022-02-11 01:36:59,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:36:59,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:36:59,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:36:59,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:36:59,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:36:59,611 INFO L87 Difference]: Start difference. First operand 1915 states and 5561 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:00,617 INFO L93 Difference]: Finished difference Result 3354 states and 9559 transitions. [2022-02-11 01:37:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:37:00,617 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:00,623 INFO L225 Difference]: With dead ends: 3354 [2022-02-11 01:37:00,623 INFO L226 Difference]: Without dead ends: 3339 [2022-02-11 01:37:00,623 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=1708, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:37:00,623 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 418 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:00,623 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1184 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:37:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-02-11 01:37:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 1894. [2022-02-11 01:37:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 2.8969889064976226) internal successors, (5484), 1893 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 5484 transitions. [2022-02-11 01:37:00,652 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 5484 transitions. Word has length 33 [2022-02-11 01:37:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:00,652 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 5484 transitions. [2022-02-11 01:37:00,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 5484 transitions. [2022-02-11 01:37:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:00,654 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:00,654 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:00,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:00,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-11 01:37:00,855 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:00,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash -949172747, now seen corresponding path program 36 times [2022-02-11 01:37:00,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:00,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722262886] [2022-02-11 01:37:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:00,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:01,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:01,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722262886] [2022-02-11 01:37:01,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722262886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:01,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834905432] [2022-02-11 01:37:01,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:37:01,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:01,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:01,099 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:01,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-11 01:37:01,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:37:01,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:01,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:01,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:01,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:01,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:02,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834905432] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:02,142 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:02,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-11 01:37:02,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731350217] [2022-02-11 01:37:02,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:02,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:02,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:02,143 INFO L87 Difference]: Start difference. First operand 1894 states and 5484 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:03,282 INFO L93 Difference]: Finished difference Result 3383 states and 9677 transitions. [2022-02-11 01:37:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:03,287 INFO L225 Difference]: With dead ends: 3383 [2022-02-11 01:37:03,287 INFO L226 Difference]: Without dead ends: 3368 [2022-02-11 01:37:03,288 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=1533, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:37:03,288 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 398 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:03,288 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1539 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2022-02-11 01:37:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1873. [2022-02-11 01:37:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 2.8995726495726495) internal successors, (5428), 1872 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 5428 transitions. [2022-02-11 01:37:03,314 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 5428 transitions. Word has length 33 [2022-02-11 01:37:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:03,314 INFO L470 AbstractCegarLoop]: Abstraction has 1873 states and 5428 transitions. [2022-02-11 01:37:03,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 5428 transitions. [2022-02-11 01:37:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:03,317 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:03,317 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:03,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-11 01:37:03,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-11 01:37:03,519 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:03,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1103610265, now seen corresponding path program 37 times [2022-02-11 01:37:03,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:03,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212287452] [2022-02-11 01:37:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:03,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:03,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212287452] [2022-02-11 01:37:03,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212287452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:03,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201003712] [2022-02-11 01:37:03,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:37:03,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:03,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:03,730 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:03,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-11 01:37:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:03,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:03,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:04,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:04,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201003712] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:04,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:04,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-02-11 01:37:04,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751349797] [2022-02-11 01:37:04,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:04,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:37:04,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:37:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:37:04,572 INFO L87 Difference]: Start difference. First operand 1873 states and 5428 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:05,461 INFO L93 Difference]: Finished difference Result 3522 states and 10009 transitions. [2022-02-11 01:37:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:37:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:05,467 INFO L225 Difference]: With dead ends: 3522 [2022-02-11 01:37:05,467 INFO L226 Difference]: Without dead ends: 3516 [2022-02-11 01:37:05,467 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1399, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:37:05,467 INFO L934 BasicCegarLoop]: 110 mSDtfsCounter, 358 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:05,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 1428 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1251 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2022-02-11 01:37:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-02-11 01:37:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1909. [2022-02-11 01:37:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 2.903039832285115) internal successors, (5539), 1908 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 5539 transitions. [2022-02-11 01:37:05,499 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 5539 transitions. Word has length 33 [2022-02-11 01:37:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:05,499 INFO L470 AbstractCegarLoop]: Abstraction has 1909 states and 5539 transitions. [2022-02-11 01:37:05,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 5539 transitions. [2022-02-11 01:37:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:05,501 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:05,501 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:05,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:05,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-11 01:37:05,702 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1473614485, now seen corresponding path program 38 times [2022-02-11 01:37:05,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:05,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453267572] [2022-02-11 01:37:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:05,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:05,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453267572] [2022-02-11 01:37:05,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453267572] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:05,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787052237] [2022-02-11 01:37:05,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:37:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:05,938 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:05,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-11 01:37:05,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:05,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:05,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:06,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:06,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:06,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787052237] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:06,945 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:06,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-11 01:37:06,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834230215] [2022-02-11 01:37:06,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:06,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:06,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:06,947 INFO L87 Difference]: Start difference. First operand 1909 states and 5539 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:08,277 INFO L93 Difference]: Finished difference Result 3502 states and 9990 transitions. [2022-02-11 01:37:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:37:08,277 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:08,283 INFO L225 Difference]: With dead ends: 3502 [2022-02-11 01:37:08,283 INFO L226 Difference]: Without dead ends: 3487 [2022-02-11 01:37:08,283 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:37:08,284 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 319 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:08,284 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1943 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:37:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-02-11 01:37:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 1768. [2022-02-11 01:37:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1767 states have (on average 2.9134125636672326) internal successors, (5148), 1767 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 5148 transitions. [2022-02-11 01:37:08,313 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 5148 transitions. Word has length 33 [2022-02-11 01:37:08,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:08,313 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 5148 transitions. [2022-02-11 01:37:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 5148 transitions. [2022-02-11 01:37:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:08,315 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:08,315 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:08,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-11 01:37:08,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-02-11 01:37:08,515 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 603202051, now seen corresponding path program 39 times [2022-02-11 01:37:08,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:08,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874202074] [2022-02-11 01:37:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:08,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:08,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:08,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874202074] [2022-02-11 01:37:08,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874202074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:08,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768164464] [2022-02-11 01:37:08,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:37:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:08,738 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:08,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-11 01:37:08,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:37:08,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:08,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:08,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:09,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:09,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768164464] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:09,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:09,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:37:09,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526238877] [2022-02-11 01:37:09,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:09,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:09,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:09,594 INFO L87 Difference]: Start difference. First operand 1768 states and 5148 transitions. Second operand has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:10,653 INFO L93 Difference]: Finished difference Result 3296 states and 9482 transitions. [2022-02-11 01:37:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:10,658 INFO L225 Difference]: With dead ends: 3296 [2022-02-11 01:37:10,659 INFO L226 Difference]: Without dead ends: 3281 [2022-02-11 01:37:10,659 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:37:10,659 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 381 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:10,659 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1294 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-02-11 01:37:10,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1844. [2022-02-11 01:37:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 2.921323928377645) internal successors, (5384), 1843 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 5384 transitions. [2022-02-11 01:37:10,686 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 5384 transitions. Word has length 33 [2022-02-11 01:37:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:10,686 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 5384 transitions. [2022-02-11 01:37:10,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 5384 transitions. [2022-02-11 01:37:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:10,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:10,689 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:10,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:10,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-11 01:37:10,889 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:10,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash -165530045, now seen corresponding path program 40 times [2022-02-11 01:37:10,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:10,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192126464] [2022-02-11 01:37:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:10,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:11,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:11,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192126464] [2022-02-11 01:37:11,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192126464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:11,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5285339] [2022-02-11 01:37:11,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:37:11,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:11,112 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:11,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-11 01:37:11,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:37:11,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:11,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:11,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:11,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:11,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5285339] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:11,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:11,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:37:11,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185007492] [2022-02-11 01:37:11,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:11,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:11,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:11,918 INFO L87 Difference]: Start difference. First operand 1844 states and 5384 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:13,101 INFO L93 Difference]: Finished difference Result 3161 states and 9104 transitions. [2022-02-11 01:37:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:13,102 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:13,107 INFO L225 Difference]: With dead ends: 3161 [2022-02-11 01:37:13,107 INFO L226 Difference]: Without dead ends: 3142 [2022-02-11 01:37:13,107 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:37:13,107 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 421 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:13,107 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1230 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:37:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2022-02-11 01:37:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 1856. [2022-02-11 01:37:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 2.922911051212938) internal successors, (5422), 1855 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 5422 transitions. [2022-02-11 01:37:13,134 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 5422 transitions. Word has length 33 [2022-02-11 01:37:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:13,134 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 5422 transitions. [2022-02-11 01:37:13,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 5422 transitions. [2022-02-11 01:37:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:13,137 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:13,137 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:13,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:13,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-11 01:37:13,337 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash 710652419, now seen corresponding path program 41 times [2022-02-11 01:37:13,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:13,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180823121] [2022-02-11 01:37:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:13,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:13,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:13,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180823121] [2022-02-11 01:37:13,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180823121] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:13,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830767066] [2022-02-11 01:37:13,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:37:13,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:13,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:13,549 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:13,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-11 01:37:13,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:13,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:13,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:14,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830767066] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:14,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:14,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:37:14,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949831529] [2022-02-11 01:37:14,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:14,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:14,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:14,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:14,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:14,380 INFO L87 Difference]: Start difference. First operand 1856 states and 5422 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:15,724 INFO L93 Difference]: Finished difference Result 2754 states and 7938 transitions. [2022-02-11 01:37:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:15,724 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:15,728 INFO L225 Difference]: With dead ends: 2754 [2022-02-11 01:37:15,728 INFO L226 Difference]: Without dead ends: 2739 [2022-02-11 01:37:15,729 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:37:15,729 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 440 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:15,729 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1516 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1567 Invalid, 0 Unknown, 142 Unchecked, 0.6s Time] [2022-02-11 01:37:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-02-11 01:37:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 1852. [2022-02-11 01:37:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 2.921663965424095) internal successors, (5408), 1851 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 5408 transitions. [2022-02-11 01:37:15,757 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 5408 transitions. Word has length 33 [2022-02-11 01:37:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:15,757 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 5408 transitions. [2022-02-11 01:37:15,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 5408 transitions. [2022-02-11 01:37:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:15,759 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:15,759 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:15,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-11 01:37:15,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:15,960 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash -23814905, now seen corresponding path program 42 times [2022-02-11 01:37:15,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:15,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387147426] [2022-02-11 01:37:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:16,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:16,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387147426] [2022-02-11 01:37:16,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387147426] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:16,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725172387] [2022-02-11 01:37:16,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:37:16,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:16,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:16,164 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:16,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-11 01:37:16,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:37:16,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:16,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:16,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:17,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725172387] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:17,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:17,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:37:17,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952752225] [2022-02-11 01:37:17,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:17,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:17,048 INFO L87 Difference]: Start difference. First operand 1852 states and 5408 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:18,369 INFO L93 Difference]: Finished difference Result 3491 states and 10010 transitions. [2022-02-11 01:37:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-11 01:37:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:18,374 INFO L225 Difference]: With dead ends: 3491 [2022-02-11 01:37:18,374 INFO L226 Difference]: Without dead ends: 3476 [2022-02-11 01:37:18,374 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:37:18,375 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 483 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:18,375 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 1358 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-02-11 01:37:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 1867. [2022-02-11 01:37:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 2.9217577706323685) internal successors, (5452), 1866 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 5452 transitions. [2022-02-11 01:37:18,402 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 5452 transitions. Word has length 33 [2022-02-11 01:37:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:18,402 INFO L470 AbstractCegarLoop]: Abstraction has 1867 states and 5452 transitions. [2022-02-11 01:37:18,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 5452 transitions. [2022-02-11 01:37:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:18,405 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:18,405 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:18,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:18,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:18,605 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1306962365, now seen corresponding path program 43 times [2022-02-11 01:37:18,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:18,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047886963] [2022-02-11 01:37:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:18,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:18,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:18,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047886963] [2022-02-11 01:37:18,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047886963] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:18,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350887137] [2022-02-11 01:37:18,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:37:18,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:18,837 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:18,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-11 01:37:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:18,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:18,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:19,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:19,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350887137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:19,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:19,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-11 01:37:19,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116277290] [2022-02-11 01:37:19,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:19,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:37:19,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:37:19,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:37:19,641 INFO L87 Difference]: Start difference. First operand 1867 states and 5452 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:21,004 INFO L93 Difference]: Finished difference Result 3807 states and 10798 transitions. [2022-02-11 01:37:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:37:21,004 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:21,011 INFO L225 Difference]: With dead ends: 3807 [2022-02-11 01:37:21,011 INFO L226 Difference]: Without dead ends: 3792 [2022-02-11 01:37:21,011 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=1989, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:37:21,011 INFO L934 BasicCegarLoop]: 142 mSDtfsCounter, 468 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:21,011 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1617 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:37:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2022-02-11 01:37:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 1847. [2022-02-11 01:37:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 2.9209100758396533) internal successors, (5392), 1846 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 5392 transitions. [2022-02-11 01:37:21,044 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 5392 transitions. Word has length 33 [2022-02-11 01:37:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:21,044 INFO L470 AbstractCegarLoop]: Abstraction has 1847 states and 5392 transitions. [2022-02-11 01:37:21,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 5392 transitions. [2022-02-11 01:37:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:21,047 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:21,047 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:21,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-11 01:37:21,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-11 01:37:21,247 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1023381209, now seen corresponding path program 44 times [2022-02-11 01:37:21,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:21,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012438876] [2022-02-11 01:37:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:21,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:21,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012438876] [2022-02-11 01:37:21,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012438876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:21,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49064123] [2022-02-11 01:37:21,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:37:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:21,479 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:21,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-11 01:37:21,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:21,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:21,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:37:21,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:21,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:22,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49064123] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:22,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:22,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2022-02-11 01:37:22,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853501377] [2022-02-11 01:37:22,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:22,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:37:22,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:37:22,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:37:22,396 INFO L87 Difference]: Start difference. First operand 1847 states and 5392 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:23,331 INFO L93 Difference]: Finished difference Result 3342 states and 9620 transitions. [2022-02-11 01:37:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:37:23,331 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:23,337 INFO L225 Difference]: With dead ends: 3342 [2022-02-11 01:37:23,337 INFO L226 Difference]: Without dead ends: 3327 [2022-02-11 01:37:23,337 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:37:23,337 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 412 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:23,337 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 983 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:37:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-02-11 01:37:23,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 1931. [2022-02-11 01:37:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 2.9098445595854923) internal successors, (5616), 1930 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 5616 transitions. [2022-02-11 01:37:23,367 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 5616 transitions. Word has length 33 [2022-02-11 01:37:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:23,367 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 5616 transitions. [2022-02-11 01:37:23,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 5616 transitions. [2022-02-11 01:37:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:23,370 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:23,370 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:23,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:23,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-11 01:37:23,570 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1059014257, now seen corresponding path program 45 times [2022-02-11 01:37:23,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:23,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223677706] [2022-02-11 01:37:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:23,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:23,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223677706] [2022-02-11 01:37:23,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223677706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:23,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542415944] [2022-02-11 01:37:23,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:37:23,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:23,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:23,770 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:23,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-11 01:37:23,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:37:23,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:23,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:23,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:23,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:24,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:24,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542415944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:24,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:24,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-11 01:37:24,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984911250] [2022-02-11 01:37:24,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:24,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:37:24,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:37:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:37:24,679 INFO L87 Difference]: Start difference. First operand 1931 states and 5616 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:26,001 INFO L93 Difference]: Finished difference Result 2954 states and 8432 transitions. [2022-02-11 01:37:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:26,005 INFO L225 Difference]: With dead ends: 2954 [2022-02-11 01:37:26,006 INFO L226 Difference]: Without dead ends: 2939 [2022-02-11 01:37:26,007 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:37:26,007 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 451 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:26,008 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1098 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:37:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-02-11 01:37:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1994. [2022-02-11 01:37:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.912694430506774) internal successors, (5805), 1993 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5805 transitions. [2022-02-11 01:37:26,034 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 5805 transitions. Word has length 33 [2022-02-11 01:37:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:26,034 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 5805 transitions. [2022-02-11 01:37:26,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 5805 transitions. [2022-02-11 01:37:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:26,036 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:26,036 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:26,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:26,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-11 01:37:26,237 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1287773101, now seen corresponding path program 46 times [2022-02-11 01:37:26,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:26,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087268427] [2022-02-11 01:37:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:26,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:26,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087268427] [2022-02-11 01:37:26,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087268427] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:26,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271913365] [2022-02-11 01:37:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:37:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:26,470 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-11 01:37:26,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:37:26,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:26,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:26,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:27,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271913365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:27,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:27,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:37:27,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680003298] [2022-02-11 01:37:27,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:27,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:27,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:27,279 INFO L87 Difference]: Start difference. First operand 1994 states and 5805 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:28,379 INFO L93 Difference]: Finished difference Result 3279 states and 9420 transitions. [2022-02-11 01:37:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:28,385 INFO L225 Difference]: With dead ends: 3279 [2022-02-11 01:37:28,385 INFO L226 Difference]: Without dead ends: 3264 [2022-02-11 01:37:28,385 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:37:28,385 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 415 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:28,385 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 1149 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:37:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-02-11 01:37:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 1973. [2022-02-11 01:37:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.9046653144016226) internal successors, (5728), 1972 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 5728 transitions. [2022-02-11 01:37:28,414 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 5728 transitions. Word has length 33 [2022-02-11 01:37:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:28,414 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 5728 transitions. [2022-02-11 01:37:28,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 5728 transitions. [2022-02-11 01:37:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:28,416 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:28,416 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:28,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:28,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:28,625 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:28,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2060462395, now seen corresponding path program 47 times [2022-02-11 01:37:28,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:28,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476771913] [2022-02-11 01:37:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:28,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:28,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:28,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476771913] [2022-02-11 01:37:28,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476771913] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:28,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075055102] [2022-02-11 01:37:28,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:37:28,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:28,858 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:28,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-11 01:37:28,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:28,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:28,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:28,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:29,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:29,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075055102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:29,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:29,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-11 01:37:29,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253591758] [2022-02-11 01:37:29,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:37:29,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:37:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:37:29,759 INFO L87 Difference]: Start difference. First operand 1973 states and 5728 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:30,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:30,854 INFO L93 Difference]: Finished difference Result 3659 states and 10458 transitions. [2022-02-11 01:37:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:37:30,854 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:30,860 INFO L225 Difference]: With dead ends: 3659 [2022-02-11 01:37:30,860 INFO L226 Difference]: Without dead ends: 3629 [2022-02-11 01:37:30,860 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=1727, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 01:37:30,861 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 416 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:30,861 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1364 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1270 Invalid, 0 Unknown, 334 Unchecked, 0.5s Time] [2022-02-11 01:37:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2022-02-11 01:37:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 1994. [2022-02-11 01:37:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.902157551430005) internal successors, (5784), 1993 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5784 transitions. [2022-02-11 01:37:30,890 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 5784 transitions. Word has length 33 [2022-02-11 01:37:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:30,891 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 5784 transitions. [2022-02-11 01:37:30,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 5784 transitions. [2022-02-11 01:37:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:30,893 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:30,893 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:30,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:31,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-11 01:37:31,094 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1906024877, now seen corresponding path program 48 times [2022-02-11 01:37:31,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:31,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219259663] [2022-02-11 01:37:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:31,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:31,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219259663] [2022-02-11 01:37:31,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219259663] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:31,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242227320] [2022-02-11 01:37:31,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:37:31,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:31,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:31,285 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:31,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-11 01:37:31,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:37:31,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:31,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:31,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:31,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:31,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:32,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242227320] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:32,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:32,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:37:32,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136768980] [2022-02-11 01:37:32,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:32,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:32,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:32,198 INFO L87 Difference]: Start difference. First operand 1994 states and 5784 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:33,390 INFO L93 Difference]: Finished difference Result 3541 states and 10148 transitions. [2022-02-11 01:37:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:37:33,391 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:33,396 INFO L225 Difference]: With dead ends: 3541 [2022-02-11 01:37:33,396 INFO L226 Difference]: Without dead ends: 3526 [2022-02-11 01:37:33,396 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:37:33,396 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 351 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:33,397 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1448 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-02-11 01:37:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 1889. [2022-02-11 01:37:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.9152542372881354) internal successors, (5504), 1888 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5504 transitions. [2022-02-11 01:37:33,424 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5504 transitions. Word has length 33 [2022-02-11 01:37:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:33,424 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5504 transitions. [2022-02-11 01:37:33,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5504 transitions. [2022-02-11 01:37:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:33,426 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:33,426 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:33,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:33,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:33,634 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -493544957, now seen corresponding path program 49 times [2022-02-11 01:37:33,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:33,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005701873] [2022-02-11 01:37:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:33,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:33,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005701873] [2022-02-11 01:37:33,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005701873] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:33,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269599556] [2022-02-11 01:37:33,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:37:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:33,825 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:33,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-11 01:37:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:33,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:33,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:34,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:34,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269599556] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:34,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:34,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-11 01:37:34,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769164077] [2022-02-11 01:37:34,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:34,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:34,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:34,656 INFO L87 Difference]: Start difference. First operand 1889 states and 5504 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:36,098 INFO L93 Difference]: Finished difference Result 2759 states and 7953 transitions. [2022-02-11 01:37:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:36,103 INFO L225 Difference]: With dead ends: 2759 [2022-02-11 01:37:36,103 INFO L226 Difference]: Without dead ends: 2740 [2022-02-11 01:37:36,103 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:37:36,105 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 403 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:36,105 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1355 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-02-11 01:37:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1915. [2022-02-11 01:37:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 2.9221525600835947) internal successors, (5593), 1914 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 5593 transitions. [2022-02-11 01:37:36,131 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 5593 transitions. Word has length 33 [2022-02-11 01:37:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:36,132 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 5593 transitions. [2022-02-11 01:37:36,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 5593 transitions. [2022-02-11 01:37:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:36,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:36,134 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:36,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:36,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-11 01:37:36,334 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 382637507, now seen corresponding path program 50 times [2022-02-11 01:37:36,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:36,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932141728] [2022-02-11 01:37:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:36,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:36,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932141728] [2022-02-11 01:37:36,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932141728] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:36,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656307490] [2022-02-11 01:37:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:37:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:36,530 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:36,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-11 01:37:36,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:36,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:36,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:36,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:36,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:37,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:37,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656307490] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:37,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:37,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:37:37,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038415624] [2022-02-11 01:37:37,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:37,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:37,491 INFO L87 Difference]: Start difference. First operand 1915 states and 5593 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:39,056 INFO L93 Difference]: Finished difference Result 2759 states and 7947 transitions. [2022-02-11 01:37:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:39,059 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:39,063 INFO L225 Difference]: With dead ends: 2759 [2022-02-11 01:37:39,063 INFO L226 Difference]: Without dead ends: 2744 [2022-02-11 01:37:39,063 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:37:39,064 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 442 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:39,064 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1515 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:37:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-02-11 01:37:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1911. [2022-02-11 01:37:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 2.9209424083769635) internal successors, (5579), 1910 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 5579 transitions. [2022-02-11 01:37:39,088 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 5579 transitions. Word has length 33 [2022-02-11 01:37:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:39,088 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 5579 transitions. [2022-02-11 01:37:39,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 5579 transitions. [2022-02-11 01:37:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:39,091 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:39,091 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:39,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:39,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-11 01:37:39,303 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1720498621, now seen corresponding path program 51 times [2022-02-11 01:37:39,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:39,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618516564] [2022-02-11 01:37:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:39,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:39,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618516564] [2022-02-11 01:37:39,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618516564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:39,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628950018] [2022-02-11 01:37:39,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:37:39,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:39,475 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:39,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-11 01:37:39,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:37:39,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:39,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-11 01:37:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:39,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:39,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:40,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628950018] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:40,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:40,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:37:40,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275760637] [2022-02-11 01:37:40,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:40,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:40,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:40,410 INFO L87 Difference]: Start difference. First operand 1911 states and 5579 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:41,597 INFO L93 Difference]: Finished difference Result 2931 states and 8523 transitions. [2022-02-11 01:37:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:37:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:41,602 INFO L225 Difference]: With dead ends: 2931 [2022-02-11 01:37:41,602 INFO L226 Difference]: Without dead ends: 2912 [2022-02-11 01:37:41,602 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:37:41,603 INFO L934 BasicCegarLoop]: 98 mSDtfsCounter, 328 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:41,603 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1436 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2022-02-11 01:37:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1933. [2022-02-11 01:37:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 2.9151138716356106) internal successors, (5632), 1932 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5632 transitions. [2022-02-11 01:37:41,630 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5632 transitions. Word has length 33 [2022-02-11 01:37:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:41,631 INFO L470 AbstractCegarLoop]: Abstraction has 1933 states and 5632 transitions. [2022-02-11 01:37:41,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5632 transitions. [2022-02-11 01:37:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:41,633 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:41,633 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:41,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:41,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:41,833 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 741551271, now seen corresponding path program 52 times [2022-02-11 01:37:41,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:41,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667223134] [2022-02-11 01:37:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:42,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:42,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667223134] [2022-02-11 01:37:42,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667223134] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:42,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887873275] [2022-02-11 01:37:42,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:37:42,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:42,030 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:42,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-11 01:37:42,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:37:42,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:42,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:42,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:42,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:42,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887873275] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:42,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:42,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-11 01:37:42,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083753930] [2022-02-11 01:37:42,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:42,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:42,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:42,865 INFO L87 Difference]: Start difference. First operand 1933 states and 5632 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:43,799 INFO L93 Difference]: Finished difference Result 2957 states and 8574 transitions. [2022-02-11 01:37:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:37:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:43,804 INFO L225 Difference]: With dead ends: 2957 [2022-02-11 01:37:43,804 INFO L226 Difference]: Without dead ends: 2942 [2022-02-11 01:37:43,804 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:37:43,805 INFO L934 BasicCegarLoop]: 98 mSDtfsCounter, 341 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:43,805 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 990 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:37:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2022-02-11 01:37:43,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1911. [2022-02-11 01:37:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 2.9209424083769635) internal successors, (5579), 1910 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 5579 transitions. [2022-02-11 01:37:43,832 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 5579 transitions. Word has length 33 [2022-02-11 01:37:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:43,832 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 5579 transitions. [2022-02-11 01:37:43,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 5579 transitions. [2022-02-11 01:37:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:43,835 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:43,835 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:43,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-11 01:37:44,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-11 01:37:44,035 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash -114396377, now seen corresponding path program 53 times [2022-02-11 01:37:44,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:44,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505009837] [2022-02-11 01:37:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:44,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:44,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505009837] [2022-02-11 01:37:44,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505009837] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:44,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301346251] [2022-02-11 01:37:44,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:37:44,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:44,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:44,217 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:44,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-11 01:37:44,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:44,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:44,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:44,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:44,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:45,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301346251] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:45,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:45,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-11 01:37:45,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765270288] [2022-02-11 01:37:45,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:45,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:37:45,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:37:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:37:45,121 INFO L87 Difference]: Start difference. First operand 1911 states and 5579 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:46,529 INFO L93 Difference]: Finished difference Result 2866 states and 8198 transitions. [2022-02-11 01:37:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:46,534 INFO L225 Difference]: With dead ends: 2866 [2022-02-11 01:37:46,534 INFO L226 Difference]: Without dead ends: 2851 [2022-02-11 01:37:46,534 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=348, Invalid=1632, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:37:46,534 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 496 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:46,535 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1178 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-02-11 01:37:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1932. [2022-02-11 01:37:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.9290523045054377) internal successors, (5656), 1931 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5656 transitions. [2022-02-11 01:37:46,570 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5656 transitions. Word has length 33 [2022-02-11 01:37:46,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:46,570 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5656 transitions. [2022-02-11 01:37:46,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:46,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5656 transitions. [2022-02-11 01:37:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:46,572 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:46,573 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:46,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:46,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-11 01:37:46,773 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1780794963, now seen corresponding path program 54 times [2022-02-11 01:37:46,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:46,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514485477] [2022-02-11 01:37:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:46,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:46,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514485477] [2022-02-11 01:37:46,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514485477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:46,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504282590] [2022-02-11 01:37:46,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:37:46,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:46,961 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-11 01:37:46,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:37:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:37:46,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:47,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:47,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504282590] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:47,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:47,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:37:47,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274353357] [2022-02-11 01:37:47,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:47,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:37:47,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:37:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:37:47,891 INFO L87 Difference]: Start difference. First operand 1932 states and 5656 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:49,390 INFO L93 Difference]: Finished difference Result 2837 states and 8133 transitions. [2022-02-11 01:37:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:37:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:49,395 INFO L225 Difference]: With dead ends: 2837 [2022-02-11 01:37:49,395 INFO L226 Difference]: Without dead ends: 2822 [2022-02-11 01:37:49,395 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=381, Invalid=1971, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 01:37:49,395 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 436 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:49,395 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1306 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-02-11 01:37:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1900. [2022-02-11 01:37:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.9152185360716167) internal successors, (5536), 1899 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5536 transitions. [2022-02-11 01:37:49,421 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5536 transitions. Word has length 33 [2022-02-11 01:37:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:49,421 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5536 transitions. [2022-02-11 01:37:49,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5536 transitions. [2022-02-11 01:37:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:49,423 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:49,423 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:49,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:49,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:49,624 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:49,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1628011223, now seen corresponding path program 55 times [2022-02-11 01:37:49,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:49,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385396631] [2022-02-11 01:37:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:49,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:49,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385396631] [2022-02-11 01:37:49,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385396631] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:49,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182757770] [2022-02-11 01:37:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:37:49,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:49,805 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:49,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-11 01:37:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:49,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:49,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:50,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:50,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182757770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:50,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:50,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-11 01:37:50,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266766814] [2022-02-11 01:37:50,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:50,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:37:50,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:37:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:37:50,674 INFO L87 Difference]: Start difference. First operand 1900 states and 5536 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:52,062 INFO L93 Difference]: Finished difference Result 3262 states and 9418 transitions. [2022-02-11 01:37:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:37:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:52,068 INFO L225 Difference]: With dead ends: 3262 [2022-02-11 01:37:52,068 INFO L226 Difference]: Without dead ends: 3243 [2022-02-11 01:37:52,069 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:37:52,069 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 471 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:52,069 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1464 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:37:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2022-02-11 01:37:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 1908. [2022-02-11 01:37:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.916622968012585) internal successors, (5562), 1907 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5562 transitions. [2022-02-11 01:37:52,097 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5562 transitions. Word has length 33 [2022-02-11 01:37:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:52,097 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5562 transitions. [2022-02-11 01:37:52,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5562 transitions. [2022-02-11 01:37:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:52,099 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:52,099 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:52,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:52,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:52,311 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1790773609, now seen corresponding path program 56 times [2022-02-11 01:37:52,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:52,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268722733] [2022-02-11 01:37:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:52,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:52,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268722733] [2022-02-11 01:37:52,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268722733] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:52,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754457330] [2022-02-11 01:37:52,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:37:52,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:52,557 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:52,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-11 01:37:52,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:37:52,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:52,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:52,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:52,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:53,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:53,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754457330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:53,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:53,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:37:53,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188370005] [2022-02-11 01:37:53,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:53,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:37:53,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:37:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:37:53,570 INFO L87 Difference]: Start difference. First operand 1908 states and 5562 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:55,380 INFO L93 Difference]: Finished difference Result 2917 states and 8390 transitions. [2022-02-11 01:37:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:37:55,381 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:55,385 INFO L225 Difference]: With dead ends: 2917 [2022-02-11 01:37:55,385 INFO L226 Difference]: Without dead ends: 2887 [2022-02-11 01:37:55,385 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=2394, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:37:55,385 INFO L934 BasicCegarLoop]: 131 mSDtfsCounter, 470 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:55,385 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1791 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:37:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-02-11 01:37:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1900. [2022-02-11 01:37:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.9152185360716167) internal successors, (5536), 1899 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5536 transitions. [2022-02-11 01:37:55,410 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5536 transitions. Word has length 33 [2022-02-11 01:37:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:55,410 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5536 transitions. [2022-02-11 01:37:55,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5536 transitions. [2022-02-11 01:37:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:55,412 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:55,412 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:55,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-11 01:37:55,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:55,627 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash -516801493, now seen corresponding path program 57 times [2022-02-11 01:37:55,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:55,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063371270] [2022-02-11 01:37:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:55,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:55,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063371270] [2022-02-11 01:37:55,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063371270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:55,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649244445] [2022-02-11 01:37:55,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:37:55,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:55,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:55,817 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:55,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-11 01:37:55,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:37:55,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:55,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:37:55,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:56,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:37:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:56,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:56,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649244445] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:56,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:56,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:37:56,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837040449] [2022-02-11 01:37:56,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:37:56,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:37:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:37:56,772 INFO L87 Difference]: Start difference. First operand 1900 states and 5536 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:37:58,448 INFO L93 Difference]: Finished difference Result 3064 states and 8742 transitions. [2022-02-11 01:37:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:37:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:37:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:37:58,452 INFO L225 Difference]: With dead ends: 3064 [2022-02-11 01:37:58,452 INFO L226 Difference]: Without dead ends: 3034 [2022-02-11 01:37:58,453 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=2394, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:37:58,453 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 570 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:37:58,453 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 1448 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:37:58,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2022-02-11 01:37:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1942. [2022-02-11 01:37:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.9206594538897477) internal successors, (5669), 1941 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5669 transitions. [2022-02-11 01:37:58,478 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5669 transitions. Word has length 33 [2022-02-11 01:37:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:37:58,478 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5669 transitions. [2022-02-11 01:37:58,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:37:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5669 transitions. [2022-02-11 01:37:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:37:58,481 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:37:58,481 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:37:58,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-11 01:37:58,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-11 01:37:58,681 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:37:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:37:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2111767217, now seen corresponding path program 58 times [2022-02-11 01:37:58,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:37:58,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14526998] [2022-02-11 01:37:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:37:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:37:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:37:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:58,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:37:58,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14526998] [2022-02-11 01:37:58,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14526998] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:37:58,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567715543] [2022-02-11 01:37:58,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:37:58,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:37:58,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:37:58,876 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:37:58,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-11 01:37:58,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:37:58,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:37:58,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:37:58,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:37:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:59,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:37:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:37:59,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567715543] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:37:59,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:37:59,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-11 01:37:59,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858757270] [2022-02-11 01:37:59,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:37:59,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:37:59,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:37:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:37:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:37:59,697 INFO L87 Difference]: Start difference. First operand 1942 states and 5669 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:00,976 INFO L93 Difference]: Finished difference Result 3338 states and 9597 transitions. [2022-02-11 01:38:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:38:00,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:00,982 INFO L225 Difference]: With dead ends: 3338 [2022-02-11 01:38:00,982 INFO L226 Difference]: Without dead ends: 3323 [2022-02-11 01:38:00,982 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:38:00,982 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 449 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:00,982 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1292 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-02-11 01:38:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 1889. [2022-02-11 01:38:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.9152542372881354) internal successors, (5504), 1888 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5504 transitions. [2022-02-11 01:38:01,012 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5504 transitions. Word has length 33 [2022-02-11 01:38:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:01,012 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5504 transitions. [2022-02-11 01:38:01,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5504 transitions. [2022-02-11 01:38:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:01,014 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:01,014 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:01,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:01,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-02-11 01:38:01,215 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash 689886501, now seen corresponding path program 59 times [2022-02-11 01:38:01,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:01,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953842396] [2022-02-11 01:38:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:01,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:01,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953842396] [2022-02-11 01:38:01,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953842396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:01,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574104026] [2022-02-11 01:38:01,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:38:01,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:01,393 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:01,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-11 01:38:01,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:01,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:01,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:01,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:01,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:02,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574104026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:02,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:02,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-11 01:38:02,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468767669] [2022-02-11 01:38:02,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:02,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:38:02,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:38:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:38:02,251 INFO L87 Difference]: Start difference. First operand 1889 states and 5504 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:03,757 INFO L93 Difference]: Finished difference Result 3761 states and 10682 transitions. [2022-02-11 01:38:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 01:38:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:03,763 INFO L225 Difference]: With dead ends: 3761 [2022-02-11 01:38:03,763 INFO L226 Difference]: Without dead ends: 3742 [2022-02-11 01:38:03,764 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 01:38:03,764 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 530 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:03,764 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1300 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-02-11 01:38:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 1893. [2022-02-11 01:38:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 2.916490486257928) internal successors, (5518), 1892 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 5518 transitions. [2022-02-11 01:38:03,796 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 5518 transitions. Word has length 33 [2022-02-11 01:38:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:03,797 INFO L470 AbstractCegarLoop]: Abstraction has 1893 states and 5518 transitions. [2022-02-11 01:38:03,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 5518 transitions. [2022-02-11 01:38:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:03,800 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:03,800 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:03,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:04,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-11 01:38:04,015 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1566068965, now seen corresponding path program 60 times [2022-02-11 01:38:04,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:04,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749642685] [2022-02-11 01:38:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:04,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:04,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749642685] [2022-02-11 01:38:04,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749642685] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:04,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374492751] [2022-02-11 01:38:04,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:38:04,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:04,217 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:04,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-11 01:38:04,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:38:04,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:04,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:04,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:04,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:05,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374492751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:05,209 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:05,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:38:05,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56081728] [2022-02-11 01:38:05,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:05,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:05,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:05,210 INFO L87 Difference]: Start difference. First operand 1893 states and 5518 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:07,362 INFO L93 Difference]: Finished difference Result 3262 states and 9279 transitions. [2022-02-11 01:38:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:38:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:07,367 INFO L225 Difference]: With dead ends: 3262 [2022-02-11 01:38:07,367 INFO L226 Difference]: Without dead ends: 3247 [2022-02-11 01:38:07,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=556, Invalid=3104, Unknown=0, NotChecked=0, Total=3660 [2022-02-11 01:38:07,368 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 620 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:07,368 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1579 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:38:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-02-11 01:38:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 1881. [2022-02-11 01:38:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 2.9148936170212765) internal successors, (5480), 1880 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 5480 transitions. [2022-02-11 01:38:07,395 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 5480 transitions. Word has length 33 [2022-02-11 01:38:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:07,395 INFO L470 AbstractCegarLoop]: Abstraction has 1881 states and 5480 transitions. [2022-02-11 01:38:07,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 5480 transitions. [2022-02-11 01:38:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:07,397 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:07,397 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:07,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:07,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:07,611 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1694496615, now seen corresponding path program 61 times [2022-02-11 01:38:07,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:07,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608121303] [2022-02-11 01:38:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:07,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:07,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608121303] [2022-02-11 01:38:07,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608121303] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:07,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339122443] [2022-02-11 01:38:07,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:38:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:07,804 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:07,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-11 01:38:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:07,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:07,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:08,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:08,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339122443] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:08,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:08,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-02-11 01:38:08,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950374297] [2022-02-11 01:38:08,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:08,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 01:38:08,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 01:38:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-02-11 01:38:08,666 INFO L87 Difference]: Start difference. First operand 1881 states and 5480 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:10,562 INFO L93 Difference]: Finished difference Result 3091 states and 8783 transitions. [2022-02-11 01:38:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:38:10,562 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:10,568 INFO L225 Difference]: With dead ends: 3091 [2022-02-11 01:38:10,568 INFO L226 Difference]: Without dead ends: 3076 [2022-02-11 01:38:10,568 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=411, Invalid=2241, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 01:38:10,568 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 469 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:10,568 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1794 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 01:38:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-02-11 01:38:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1902. [2022-02-11 01:38:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 2.923198316675434) internal successors, (5557), 1901 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 5557 transitions. [2022-02-11 01:38:10,594 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 5557 transitions. Word has length 33 [2022-02-11 01:38:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:10,594 INFO L470 AbstractCegarLoop]: Abstraction has 1902 states and 5557 transitions. [2022-02-11 01:38:10,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:10,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 5557 transitions. [2022-02-11 01:38:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:10,596 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:10,596 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:10,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:10,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:10,800 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 28098029, now seen corresponding path program 62 times [2022-02-11 01:38:10,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:10,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266251148] [2022-02-11 01:38:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:10,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:10,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266251148] [2022-02-11 01:38:10,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266251148] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:10,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011235804] [2022-02-11 01:38:10,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:38:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:10,987 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:10,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-11 01:38:11,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:11,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:11,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:11,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:11,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:11,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:11,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011235804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:11,957 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:11,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:38:11,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200041687] [2022-02-11 01:38:11,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:11,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:11,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:11,958 INFO L87 Difference]: Start difference. First operand 1902 states and 5557 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:13,410 INFO L93 Difference]: Finished difference Result 3527 states and 10065 transitions. [2022-02-11 01:38:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:38:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:13,418 INFO L225 Difference]: With dead ends: 3527 [2022-02-11 01:38:13,418 INFO L226 Difference]: Without dead ends: 3512 [2022-02-11 01:38:13,419 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=2069, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:38:13,419 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 522 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:13,419 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1592 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:38:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-02-11 01:38:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1784. [2022-02-11 01:38:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 2.9209197980931014) internal successors, (5208), 1783 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 5208 transitions. [2022-02-11 01:38:13,448 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 5208 transitions. Word has length 33 [2022-02-11 01:38:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:13,449 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 5208 transitions. [2022-02-11 01:38:13,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 5208 transitions. [2022-02-11 01:38:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:13,451 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:13,451 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:13,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:13,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-11 01:38:13,651 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1005542603, now seen corresponding path program 63 times [2022-02-11 01:38:13,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:13,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280714241] [2022-02-11 01:38:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:13,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:13,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280714241] [2022-02-11 01:38:13,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280714241] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:38:13,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:38:13,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-11 01:38:13,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849827892] [2022-02-11 01:38:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:38:13,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-11 01:38:13,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-11 01:38:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:38:13,660 INFO L87 Difference]: Start difference. First operand 1784 states and 5208 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:13,674 INFO L93 Difference]: Finished difference Result 1474 states and 4216 transitions. [2022-02-11 01:38:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-11 01:38:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:13,677 INFO L225 Difference]: With dead ends: 1474 [2022-02-11 01:38:13,677 INFO L226 Difference]: Without dead ends: 1474 [2022-02-11 01:38:13,677 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-11 01:38:13,678 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:13,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:38:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-02-11 01:38:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2022-02-11 01:38:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 2.8621860149355056) internal successors, (4216), 1473 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4216 transitions. [2022-02-11 01:38:13,693 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4216 transitions. Word has length 33 [2022-02-11 01:38:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:13,693 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 4216 transitions. [2022-02-11 01:38:13,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4216 transitions. [2022-02-11 01:38:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:13,695 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:13,695 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:13,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-11 01:38:13,695 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:13,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1645279201, now seen corresponding path program 64 times [2022-02-11 01:38:13,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:13,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862882356] [2022-02-11 01:38:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:13,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:13,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:13,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862882356] [2022-02-11 01:38:13,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862882356] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:13,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510179139] [2022-02-11 01:38:13,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:38:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:13,896 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:13,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-11 01:38:13,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:38:13,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:13,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:13,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:14,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:14,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510179139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:14,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:14,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-11 01:38:14,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930973340] [2022-02-11 01:38:14,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:14,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:14,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:14,745 INFO L87 Difference]: Start difference. First operand 1474 states and 4216 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:15,742 INFO L93 Difference]: Finished difference Result 2806 states and 7869 transitions. [2022-02-11 01:38:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:15,747 INFO L225 Difference]: With dead ends: 2806 [2022-02-11 01:38:15,747 INFO L226 Difference]: Without dead ends: 2791 [2022-02-11 01:38:15,747 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=1520, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:38:15,748 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 396 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:15,748 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 1157 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-02-11 01:38:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1513. [2022-02-11 01:38:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 2.8624338624338623) internal successors, (4328), 1512 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 4328 transitions. [2022-02-11 01:38:15,777 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 4328 transitions. Word has length 33 [2022-02-11 01:38:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:15,777 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 4328 transitions. [2022-02-11 01:38:15,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 4328 transitions. [2022-02-11 01:38:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:15,779 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:15,779 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:15,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:15,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-11 01:38:15,979 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:15,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1880955999, now seen corresponding path program 65 times [2022-02-11 01:38:15,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:15,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178121376] [2022-02-11 01:38:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:16,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:16,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178121376] [2022-02-11 01:38:16,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178121376] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:16,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067161920] [2022-02-11 01:38:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:38:16,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:16,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:16,163 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:16,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-11 01:38:16,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:16,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:16,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:16,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:16,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067161920] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:16,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:16,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:38:16,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722818721] [2022-02-11 01:38:16,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:16,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:16,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:16,987 INFO L87 Difference]: Start difference. First operand 1513 states and 4328 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:18,118 INFO L93 Difference]: Finished difference Result 2697 states and 7578 transitions. [2022-02-11 01:38:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:18,137 INFO L225 Difference]: With dead ends: 2697 [2022-02-11 01:38:18,137 INFO L226 Difference]: Without dead ends: 2678 [2022-02-11 01:38:18,137 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:38:18,138 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 340 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:18,138 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1306 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-02-11 01:38:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1525. [2022-02-11 01:38:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 2.8648293963254594) internal successors, (4366), 1524 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4366 transitions. [2022-02-11 01:38:18,160 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4366 transitions. Word has length 33 [2022-02-11 01:38:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:18,160 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 4366 transitions. [2022-02-11 01:38:18,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4366 transitions. [2022-02-11 01:38:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:18,161 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:18,162 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:18,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:18,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:18,375 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1537828833, now seen corresponding path program 66 times [2022-02-11 01:38:18,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:18,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683677074] [2022-02-11 01:38:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:18,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:18,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683677074] [2022-02-11 01:38:18,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683677074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:18,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993997976] [2022-02-11 01:38:18,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:38:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:18,569 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:18,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-11 01:38:18,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:38:18,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:18,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:18,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:19,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:19,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993997976] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:19,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:19,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2022-02-11 01:38:19,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588786230] [2022-02-11 01:38:19,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:19,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:38:19,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:19,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:38:19,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:38:19,474 INFO L87 Difference]: Start difference. First operand 1525 states and 4366 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:20,812 INFO L93 Difference]: Finished difference Result 2359 states and 6606 transitions. [2022-02-11 01:38:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:38:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:20,821 INFO L225 Difference]: With dead ends: 2359 [2022-02-11 01:38:20,822 INFO L226 Difference]: Without dead ends: 2344 [2022-02-11 01:38:20,822 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:38:20,822 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 360 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:20,822 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1297 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-02-11 01:38:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1521. [2022-02-11 01:38:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.863157894736842) internal successors, (4352), 1520 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4352 transitions. [2022-02-11 01:38:20,843 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4352 transitions. Word has length 33 [2022-02-11 01:38:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:20,843 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4352 transitions. [2022-02-11 01:38:20,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4352 transitions. [2022-02-11 01:38:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:20,845 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:20,845 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:20,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:21,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-11 01:38:21,062 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2022671139, now seen corresponding path program 67 times [2022-02-11 01:38:21,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:21,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739776095] [2022-02-11 01:38:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:21,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:21,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739776095] [2022-02-11 01:38:21,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739776095] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:21,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234878518] [2022-02-11 01:38:21,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:38:21,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:21,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:21,249 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:21,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-11 01:38:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:21,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:21,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:22,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234878518] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:22,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:22,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-11 01:38:22,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113344087] [2022-02-11 01:38:22,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:22,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:22,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:22,085 INFO L87 Difference]: Start difference. First operand 1521 states and 4352 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:23,094 INFO L93 Difference]: Finished difference Result 3128 states and 8721 transitions. [2022-02-11 01:38:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:38:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:23,099 INFO L225 Difference]: With dead ends: 3128 [2022-02-11 01:38:23,099 INFO L226 Difference]: Without dead ends: 3098 [2022-02-11 01:38:23,099 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:38:23,099 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 462 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:23,099 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1219 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1252 Invalid, 0 Unknown, 164 Unchecked, 0.5s Time] [2022-02-11 01:38:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-02-11 01:38:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 1527. [2022-02-11 01:38:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8636959370904327) internal successors, (4370), 1526 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4370 transitions. [2022-02-11 01:38:23,121 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4370 transitions. Word has length 33 [2022-02-11 01:38:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4370 transitions. [2022-02-11 01:38:23,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4370 transitions. [2022-02-11 01:38:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:23,123 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:23,123 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:23,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:23,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-11 01:38:23,324 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash 739523679, now seen corresponding path program 68 times [2022-02-11 01:38:23,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:23,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315742377] [2022-02-11 01:38:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:23,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:23,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315742377] [2022-02-11 01:38:23,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315742377] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:23,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701567178] [2022-02-11 01:38:23,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:38:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:23,536 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:23,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-11 01:38:23,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:23,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:23,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:23,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:23,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:24,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701567178] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:24,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:24,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:38:24,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394291680] [2022-02-11 01:38:24,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:24,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:38:24,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:38:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:38:24,400 INFO L87 Difference]: Start difference. First operand 1527 states and 4370 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:25,834 INFO L93 Difference]: Finished difference Result 3264 states and 9075 transitions. [2022-02-11 01:38:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:38:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:25,839 INFO L225 Difference]: With dead ends: 3264 [2022-02-11 01:38:25,839 INFO L226 Difference]: Without dead ends: 3249 [2022-02-11 01:38:25,839 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:38:25,840 INFO L934 BasicCegarLoop]: 131 mSDtfsCounter, 380 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:25,840 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1739 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:38:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-02-11 01:38:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 1507. [2022-02-11 01:38:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 2.861885790172643) internal successors, (4310), 1506 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4310 transitions. [2022-02-11 01:38:25,860 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4310 transitions. Word has length 33 [2022-02-11 01:38:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:25,860 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 4310 transitions. [2022-02-11 01:38:25,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4310 transitions. [2022-02-11 01:38:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:25,862 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:25,862 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:25,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:26,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:26,062 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1023104835, now seen corresponding path program 69 times [2022-02-11 01:38:26,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:26,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483500282] [2022-02-11 01:38:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:26,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:26,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483500282] [2022-02-11 01:38:26,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483500282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:26,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912238848] [2022-02-11 01:38:26,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:38:26,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:26,246 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:26,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-11 01:38:26,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:38:26,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:26,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:38:26,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:26,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:27,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912238848] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:27,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:27,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:38:27,100 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617563765] [2022-02-11 01:38:27,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:27,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:38:27,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:38:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:38:27,100 INFO L87 Difference]: Start difference. First operand 1507 states and 4310 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:27,956 INFO L93 Difference]: Finished difference Result 2822 states and 7897 transitions. [2022-02-11 01:38:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:38:27,956 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:27,960 INFO L225 Difference]: With dead ends: 2822 [2022-02-11 01:38:27,960 INFO L226 Difference]: Without dead ends: 2807 [2022-02-11 01:38:27,961 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:38:27,961 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 394 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:27,961 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 928 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-02-11 01:38:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 1576. [2022-02-11 01:38:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 2.843809523809524) internal successors, (4479), 1575 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4479 transitions. [2022-02-11 01:38:27,982 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4479 transitions. Word has length 33 [2022-02-11 01:38:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:27,982 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 4479 transitions. [2022-02-11 01:38:27,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4479 transitions. [2022-02-11 01:38:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:27,984 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:27,984 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:27,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:28,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-02-11 01:38:28,184 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 987471787, now seen corresponding path program 70 times [2022-02-11 01:38:28,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:28,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004194490] [2022-02-11 01:38:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:28,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:28,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004194490] [2022-02-11 01:38:28,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004194490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:28,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902177679] [2022-02-11 01:38:28,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:38:28,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:28,377 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:28,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-11 01:38:28,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:38:28,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:28,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:28,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:28,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:29,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902177679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:29,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:29,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:38:29,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122729005] [2022-02-11 01:38:29,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:29,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:29,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:29,198 INFO L87 Difference]: Start difference. First operand 1576 states and 4479 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:30,395 INFO L93 Difference]: Finished difference Result 2350 states and 6557 transitions. [2022-02-11 01:38:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:30,399 INFO L225 Difference]: With dead ends: 2350 [2022-02-11 01:38:30,399 INFO L226 Difference]: Without dead ends: 2335 [2022-02-11 01:38:30,399 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=1581, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:38:30,400 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 348 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:30,400 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1138 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-02-11 01:38:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 1594. [2022-02-11 01:38:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.8455743879472695) internal successors, (4533), 1593 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4533 transitions. [2022-02-11 01:38:30,421 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4533 transitions. Word has length 33 [2022-02-11 01:38:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:30,421 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 4533 transitions. [2022-02-11 01:38:30,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4533 transitions. [2022-02-11 01:38:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:30,423 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:30,423 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:30,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-11 01:38:30,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:30,623 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 758712943, now seen corresponding path program 71 times [2022-02-11 01:38:30,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:30,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849993318] [2022-02-11 01:38:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:30,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:30,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849993318] [2022-02-11 01:38:30,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849993318] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:30,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280418808] [2022-02-11 01:38:30,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:38:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:30,819 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:30,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-11 01:38:30,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:38:30,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:30,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:30,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:31,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:31,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280418808] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:31,609 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:31,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-02-11 01:38:31,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744119634] [2022-02-11 01:38:31,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:31,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:31,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:31,610 INFO L87 Difference]: Start difference. First operand 1594 states and 4533 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:32,613 INFO L93 Difference]: Finished difference Result 2684 states and 7527 transitions. [2022-02-11 01:38:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:32,618 INFO L225 Difference]: With dead ends: 2684 [2022-02-11 01:38:32,618 INFO L226 Difference]: Without dead ends: 2669 [2022-02-11 01:38:32,619 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:38:32,619 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 344 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:32,619 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1093 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-02-11 01:38:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1588. [2022-02-11 01:38:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 2.8424700693131695) internal successors, (4511), 1587 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 4511 transitions. [2022-02-11 01:38:32,649 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 4511 transitions. Word has length 33 [2022-02-11 01:38:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:32,649 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 4511 transitions. [2022-02-11 01:38:32,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 4511 transitions. [2022-02-11 01:38:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:32,651 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:32,651 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:32,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:32,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:32,852 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:32,852 INFO L85 PathProgramCache]: Analyzing trace with hash -188018857, now seen corresponding path program 72 times [2022-02-11 01:38:32,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:32,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771513983] [2022-02-11 01:38:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:33,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:33,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771513983] [2022-02-11 01:38:33,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771513983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:33,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767853447] [2022-02-11 01:38:33,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:38:33,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:33,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:33,072 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:33,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 01:38:33,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:38:33,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:33,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:33,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:33,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:33,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:33,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767853447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:33,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:33,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:38:33,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912688028] [2022-02-11 01:38:33,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:38:33,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:38:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:38:33,954 INFO L87 Difference]: Start difference. First operand 1588 states and 4511 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:34,939 INFO L93 Difference]: Finished difference Result 2841 states and 7944 transitions. [2022-02-11 01:38:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 01:38:34,939 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:34,944 INFO L225 Difference]: With dead ends: 2841 [2022-02-11 01:38:34,944 INFO L226 Difference]: Without dead ends: 2826 [2022-02-11 01:38:34,944 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 01:38:34,945 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 402 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:34,945 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 937 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-02-11 01:38:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1594. [2022-02-11 01:38:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.84180790960452) internal successors, (4527), 1593 states have internal predecessors, (4527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4527 transitions. [2022-02-11 01:38:34,967 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4527 transitions. Word has length 33 [2022-02-11 01:38:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:34,967 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 4527 transitions. [2022-02-11 01:38:34,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4527 transitions. [2022-02-11 01:38:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:34,969 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:34,969 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:34,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:35,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:35,169 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:35,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash -342456375, now seen corresponding path program 73 times [2022-02-11 01:38:35,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:35,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777399504] [2022-02-11 01:38:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:35,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:35,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777399504] [2022-02-11 01:38:35,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777399504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:35,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848983892] [2022-02-11 01:38:35,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:38:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:35,361 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:35,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 01:38:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:35,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:35,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:35,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:36,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848983892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:36,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:36,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-02-11 01:38:36,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943661799] [2022-02-11 01:38:36,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:36,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:36,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:36,213 INFO L87 Difference]: Start difference. First operand 1594 states and 4527 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:36,612 INFO L93 Difference]: Finished difference Result 2428 states and 6808 transitions. [2022-02-11 01:38:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-11 01:38:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:36,616 INFO L225 Difference]: With dead ends: 2428 [2022-02-11 01:38:36,616 INFO L226 Difference]: Without dead ends: 2422 [2022-02-11 01:38:36,617 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:38:36,617 INFO L934 BasicCegarLoop]: 87 mSDtfsCounter, 344 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:36,617 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 834 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-02-11 01:38:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2022-02-11 01:38:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1614. [2022-02-11 01:38:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 2.8406695598264102) internal successors, (4582), 1613 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 4582 transitions. [2022-02-11 01:38:36,638 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 4582 transitions. Word has length 33 [2022-02-11 01:38:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:36,638 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 4582 transitions. [2022-02-11 01:38:36,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 4582 transitions. [2022-02-11 01:38:36,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:36,640 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:36,640 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:36,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:36,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-11 01:38:36,840 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -712460595, now seen corresponding path program 74 times [2022-02-11 01:38:36,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:36,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960461201] [2022-02-11 01:38:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:37,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:37,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960461201] [2022-02-11 01:38:37,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960461201] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:37,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824154568] [2022-02-11 01:38:37,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:38:37,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:37,031 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:37,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 01:38:37,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:37,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:37,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:37,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:37,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:37,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:37,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824154568] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:37,943 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:37,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2022-02-11 01:38:37,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983134697] [2022-02-11 01:38:37,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:37,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:38:37,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:37,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:38:37,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:38:37,944 INFO L87 Difference]: Start difference. First operand 1614 states and 4582 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:39,157 INFO L93 Difference]: Finished difference Result 2986 states and 8329 transitions. [2022-02-11 01:38:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:38:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:39,162 INFO L225 Difference]: With dead ends: 2986 [2022-02-11 01:38:39,162 INFO L226 Difference]: Without dead ends: 2971 [2022-02-11 01:38:39,162 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:38:39,162 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 323 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:39,162 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1621 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:38:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-02-11 01:38:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1519. [2022-02-11 01:38:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.86034255599473) internal successors, (4342), 1518 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4342 transitions. [2022-02-11 01:38:39,185 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4342 transitions. Word has length 33 [2022-02-11 01:38:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:39,185 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4342 transitions. [2022-02-11 01:38:39,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4342 transitions. [2022-02-11 01:38:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:39,186 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:39,186 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:39,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:39,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:39,387 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:39,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1552941087, now seen corresponding path program 75 times [2022-02-11 01:38:39,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:39,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684310996] [2022-02-11 01:38:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:39,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:39,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684310996] [2022-02-11 01:38:39,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684310996] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:39,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607990534] [2022-02-11 01:38:39,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:38:39,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:39,562 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:39,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 01:38:39,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:38:39,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:39,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:39,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:39,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:40,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:40,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607990534] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:40,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:40,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:38:40,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832443819] [2022-02-11 01:38:40,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:40,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:40,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:40,499 INFO L87 Difference]: Start difference. First operand 1519 states and 4342 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:41,832 INFO L93 Difference]: Finished difference Result 2182 states and 6153 transitions. [2022-02-11 01:38:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:41,832 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:41,835 INFO L225 Difference]: With dead ends: 2182 [2022-02-11 01:38:41,835 INFO L226 Difference]: Without dead ends: 2163 [2022-02-11 01:38:41,836 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:38:41,836 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 326 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:41,836 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1290 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-02-11 01:38:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1527. [2022-02-11 01:38:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8636959370904327) internal successors, (4370), 1526 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4370 transitions. [2022-02-11 01:38:41,865 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4370 transitions. Word has length 33 [2022-02-11 01:38:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:41,865 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4370 transitions. [2022-02-11 01:38:41,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4370 transitions. [2022-02-11 01:38:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:41,867 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:41,867 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:41,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:42,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:42,079 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1865843745, now seen corresponding path program 76 times [2022-02-11 01:38:42,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:42,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625263030] [2022-02-11 01:38:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:42,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:42,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625263030] [2022-02-11 01:38:42,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625263030] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:42,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148827501] [2022-02-11 01:38:42,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:38:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:42,256 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 01:38:42,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:38:42,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:42,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:42,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:43,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148827501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:43,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:43,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:38:43,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330434801] [2022-02-11 01:38:43,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:38:43,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:38:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:38:43,121 INFO L87 Difference]: Start difference. First operand 1527 states and 4370 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:44,461 INFO L93 Difference]: Finished difference Result 2182 states and 6147 transitions. [2022-02-11 01:38:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:38:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:44,464 INFO L225 Difference]: With dead ends: 2182 [2022-02-11 01:38:44,464 INFO L226 Difference]: Without dead ends: 2167 [2022-02-11 01:38:44,464 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:38:44,465 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 357 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:44,465 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1109 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:38:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-02-11 01:38:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1523. [2022-02-11 01:38:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-11 01:38:44,483 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-11 01:38:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:44,483 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-11 01:38:44,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-11 01:38:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:44,485 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:44,485 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:44,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:44,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-11 01:38:44,686 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:44,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash 325987423, now seen corresponding path program 77 times [2022-02-11 01:38:44,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:44,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521363952] [2022-02-11 01:38:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:44,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:44,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521363952] [2022-02-11 01:38:44,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521363952] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:44,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782396107] [2022-02-11 01:38:44,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:38:44,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:44,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:44,860 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:44,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 01:38:44,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:38:44,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:44,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:44,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:45,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:45,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782396107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:45,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:45,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:38:45,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053351612] [2022-02-11 01:38:45,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:45,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:38:45,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:38:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:38:45,644 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:46,510 INFO L93 Difference]: Finished difference Result 2357 states and 6689 transitions. [2022-02-11 01:38:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 01:38:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:46,514 INFO L225 Difference]: With dead ends: 2357 [2022-02-11 01:38:46,514 INFO L226 Difference]: Without dead ends: 2338 [2022-02-11 01:38:46,514 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 01:38:46,514 INFO L934 BasicCegarLoop]: 88 mSDtfsCounter, 223 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:46,515 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 913 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-02-11 01:38:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1527. [2022-02-11 01:38:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 2.8610747051114025) internal successors, (4366), 1526 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 4366 transitions. [2022-02-11 01:38:46,534 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 4366 transitions. Word has length 33 [2022-02-11 01:38:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:46,534 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 4366 transitions. [2022-02-11 01:38:46,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 4366 transitions. [2022-02-11 01:38:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:46,536 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:46,536 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:46,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:46,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-11 01:38:46,743 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1506929981, now seen corresponding path program 78 times [2022-02-11 01:38:46,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:46,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945657220] [2022-02-11 01:38:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:46,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:46,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:46,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945657220] [2022-02-11 01:38:46,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945657220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:46,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309246014] [2022-02-11 01:38:46,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:38:46,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:46,937 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:46,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:38:46,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:46,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:38:46,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:46,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 01:38:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:47,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:47,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309246014] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:47,800 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:47,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:38:47,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036908329] [2022-02-11 01:38:47,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:47,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:47,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:47,803 INFO L87 Difference]: Start difference. First operand 1527 states and 4366 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:48,732 INFO L93 Difference]: Finished difference Result 2353 states and 6675 transitions. [2022-02-11 01:38:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-11 01:38:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:48,735 INFO L225 Difference]: With dead ends: 2353 [2022-02-11 01:38:48,736 INFO L226 Difference]: Without dead ends: 2338 [2022-02-11 01:38:48,736 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:38:48,736 INFO L934 BasicCegarLoop]: 85 mSDtfsCounter, 264 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:48,736 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 982 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-02-11 01:38:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1523. [2022-02-11 01:38:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-11 01:38:48,756 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-11 01:38:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:48,756 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-11 01:38:48,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-11 01:38:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:48,757 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:48,757 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:48,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:48,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:48,958 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1932089667, now seen corresponding path program 79 times [2022-02-11 01:38:48,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:48,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749239741] [2022-02-11 01:38:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:49,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:49,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749239741] [2022-02-11 01:38:49,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749239741] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:49,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756990940] [2022-02-11 01:38:49,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:38:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:49,140 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:49,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 01:38:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:49,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:49,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:49,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:49,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756990940] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:49,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:49,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-02-11 01:38:49,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380679611] [2022-02-11 01:38:49,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:49,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 01:38:49,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 01:38:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:38:49,994 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:51,368 INFO L93 Difference]: Finished difference Result 2178 states and 6117 transitions. [2022-02-11 01:38:51,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:38:51,368 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:51,371 INFO L225 Difference]: With dead ends: 2178 [2022-02-11 01:38:51,372 INFO L226 Difference]: Without dead ends: 2163 [2022-02-11 01:38:51,372 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:38:51,372 INFO L934 BasicCegarLoop]: 99 mSDtfsCounter, 278 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:51,372 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1207 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:38:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-02-11 01:38:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1529. [2022-02-11 01:38:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 2.865183246073298) internal successors, (4378), 1528 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4378 transitions. [2022-02-11 01:38:51,400 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4378 transitions. Word has length 33 [2022-02-11 01:38:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:51,400 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 4378 transitions. [2022-02-11 01:38:51,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4378 transitions. [2022-02-11 01:38:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:51,401 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:51,401 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:51,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:51,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:51,602 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash 265691081, now seen corresponding path program 80 times [2022-02-11 01:38:51,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:51,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864655502] [2022-02-11 01:38:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:51,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:51,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864655502] [2022-02-11 01:38:51,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864655502] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:51,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461182330] [2022-02-11 01:38:51,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:38:51,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:51,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:51,779 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:51,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 01:38:51,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:38:51,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:51,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:51,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:51,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:52,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:52,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461182330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:52,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:52,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-02-11 01:38:52,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445714307] [2022-02-11 01:38:52,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:52,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:38:52,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:38:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:38:52,727 INFO L87 Difference]: Start difference. First operand 1529 states and 4378 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:53,878 INFO L93 Difference]: Finished difference Result 2149 states and 6052 transitions. [2022-02-11 01:38:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 01:38:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:53,882 INFO L225 Difference]: With dead ends: 2149 [2022-02-11 01:38:53,882 INFO L226 Difference]: Without dead ends: 2134 [2022-02-11 01:38:53,882 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:38:53,882 INFO L934 BasicCegarLoop]: 100 mSDtfsCounter, 336 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:53,882 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 864 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 01:38:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-02-11 01:38:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1521. [2022-02-11 01:38:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.860526315789474) internal successors, (4348), 1520 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4348 transitions. [2022-02-11 01:38:53,900 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4348 transitions. Word has length 33 [2022-02-11 01:38:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:53,900 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4348 transitions. [2022-02-11 01:38:53,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4348 transitions. [2022-02-11 01:38:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:53,901 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:53,902 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:53,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:54,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-02-11 01:38:54,102 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash -620470029, now seen corresponding path program 81 times [2022-02-11 01:38:54,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:54,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838260323] [2022-02-11 01:38:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:54,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:54,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:54,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838260323] [2022-02-11 01:38:54,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838260323] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:54,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579495693] [2022-02-11 01:38:54,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:38:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:54,305 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:54,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 01:38:54,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:38:54,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:54,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:38:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:54,509 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:38:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:54,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:55,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579495693] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:55,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:55,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:38:55,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626445132] [2022-02-11 01:38:55,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:55,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:38:55,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:38:55,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:38:55,265 INFO L87 Difference]: Start difference. First operand 1521 states and 4348 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:56,707 INFO L93 Difference]: Finished difference Result 2712 states and 7650 transitions. [2022-02-11 01:38:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:38:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:56,718 INFO L225 Difference]: With dead ends: 2712 [2022-02-11 01:38:56,719 INFO L226 Difference]: Without dead ends: 2693 [2022-02-11 01:38:56,719 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:38:56,719 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 388 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:56,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1662 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:38:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2022-02-11 01:38:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1529. [2022-02-11 01:38:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 2.862565445026178) internal successors, (4374), 1528 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 4374 transitions. [2022-02-11 01:38:56,758 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 4374 transitions. Word has length 33 [2022-02-11 01:38:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:56,758 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 4374 transitions. [2022-02-11 01:38:56,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 4374 transitions. [2022-02-11 01:38:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:56,760 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:56,761 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:56,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:56,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:56,961 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 255712435, now seen corresponding path program 82 times [2022-02-11 01:38:56,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:56,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350062008] [2022-02-11 01:38:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:57,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:57,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350062008] [2022-02-11 01:38:57,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350062008] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:57,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074147485] [2022-02-11 01:38:57,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:38:57,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:57,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:57,148 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:57,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 01:38:57,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:38:57,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:38:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:38:57,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:38:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:57,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:38:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:58,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074147485] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:38:58,018 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:38:58,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-11 01:38:58,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594097307] [2022-02-11 01:38:58,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:38:58,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:38:58,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:38:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:38:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:38:58,018 INFO L87 Difference]: Start difference. First operand 1529 states and 4374 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:38:59,550 INFO L93 Difference]: Finished difference Result 2282 states and 6441 transitions. [2022-02-11 01:38:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 01:38:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:38:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:38:59,554 INFO L225 Difference]: With dead ends: 2282 [2022-02-11 01:38:59,554 INFO L226 Difference]: Without dead ends: 2267 [2022-02-11 01:38:59,554 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 01:38:59,555 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 372 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:38:59,555 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 1211 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:38:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-02-11 01:38:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1521. [2022-02-11 01:38:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 2.860526315789474) internal successors, (4348), 1520 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 4348 transitions. [2022-02-11 01:38:59,574 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 4348 transitions. Word has length 33 [2022-02-11 01:38:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:38:59,574 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 4348 transitions. [2022-02-11 01:38:59,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:38:59,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 4348 transitions. [2022-02-11 01:38:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:38:59,576 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:38:59,576 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:38:59,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-11 01:38:59,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:59,793 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:38:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:38:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1529684551, now seen corresponding path program 83 times [2022-02-11 01:38:59,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:38:59,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33142650] [2022-02-11 01:38:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:38:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:38:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:38:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:38:59,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:38:59,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33142650] [2022-02-11 01:38:59,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33142650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:38:59,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095085645] [2022-02-11 01:38:59,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:38:59,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:38:59,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:38:59,975 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:38:59,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 01:39:00,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:39:00,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:00,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:39:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:00,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:00,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:00,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:00,710 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:00,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-02-11 01:39:00,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:00,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2022-02-11 01:39:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:01,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095085645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:01,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:01,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2022-02-11 01:39:01,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231132231] [2022-02-11 01:39:01,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:01,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 01:39:01,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:01,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 01:39:01,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-02-11 01:39:01,060 INFO L87 Difference]: Start difference. First operand 1521 states and 4348 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:02,653 INFO L93 Difference]: Finished difference Result 2242 states and 6292 transitions. [2022-02-11 01:39:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 01:39:02,654 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:39:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:02,657 INFO L225 Difference]: With dead ends: 2242 [2022-02-11 01:39:02,657 INFO L226 Difference]: Without dead ends: 2227 [2022-02-11 01:39:02,658 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=452, Invalid=2628, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:39:02,658 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 325 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:02,658 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1632 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:39:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-02-11 01:39:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 1519. [2022-02-11 01:39:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.86034255599473) internal successors, (4342), 1518 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4342 transitions. [2022-02-11 01:39:02,678 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4342 transitions. Word has length 33 [2022-02-11 01:39:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:02,678 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4342 transitions. [2022-02-11 01:39:02,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4342 transitions. [2022-02-11 01:39:02,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:39:02,680 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:02,680 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:02,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-11 01:39:02,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-02-11 01:39:02,880 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:02,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1558594751, now seen corresponding path program 84 times [2022-02-11 01:39:02,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:02,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489711782] [2022-02-11 01:39:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:02,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:03,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:03,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489711782] [2022-02-11 01:39:03,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489711782] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:03,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619352517] [2022-02-11 01:39:03,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:39:03,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:03,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:03,058 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:03,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-11 01:39:03,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:39:03,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:03,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:39:03,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:03,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:39:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:03,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:03,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619352517] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:03,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:03,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:39:03,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543923772] [2022-02-11 01:39:03,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:03,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:39:03,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:39:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:39:03,990 INFO L87 Difference]: Start difference. First operand 1519 states and 4342 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:05,556 INFO L93 Difference]: Finished difference Result 3203 states and 8934 transitions. [2022-02-11 01:39:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:39:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:39:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:05,561 INFO L225 Difference]: With dead ends: 3203 [2022-02-11 01:39:05,561 INFO L226 Difference]: Without dead ends: 3184 [2022-02-11 01:39:05,561 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 01:39:05,562 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 468 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:05,562 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1579 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:39:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-02-11 01:39:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 1523. [2022-02-11 01:39:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 2.862023653088042) internal successors, (4356), 1522 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 4356 transitions. [2022-02-11 01:39:05,584 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 4356 transitions. Word has length 33 [2022-02-11 01:39:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:05,584 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 4356 transitions. [2022-02-11 01:39:05,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 4356 transitions. [2022-02-11 01:39:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:39:05,586 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:05,586 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:05,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:05,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:05,786 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -682412287, now seen corresponding path program 85 times [2022-02-11 01:39:05,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:05,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067624214] [2022-02-11 01:39:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:05,972 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:05,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067624214] [2022-02-11 01:39:05,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067624214] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:05,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048450789] [2022-02-11 01:39:05,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:39:05,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:05,973 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:05,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-11 01:39:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:05,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 01:39:05,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:06,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:06,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048450789] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:06,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:06,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2022-02-11 01:39:06,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472861118] [2022-02-11 01:39:06,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:06,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 01:39:06,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 01:39:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-02-11 01:39:06,860 INFO L87 Difference]: Start difference. First operand 1523 states and 4356 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:08,667 INFO L93 Difference]: Finished difference Result 2715 states and 7541 transitions. [2022-02-11 01:39:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:39:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:39:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:08,671 INFO L225 Difference]: With dead ends: 2715 [2022-02-11 01:39:08,671 INFO L226 Difference]: Without dead ends: 2700 [2022-02-11 01:39:08,672 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=390, Invalid=2160, Unknown=0, NotChecked=0, Total=2550 [2022-02-11 01:39:08,672 INFO L934 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:08,672 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1586 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:39:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2022-02-11 01:39:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1511. [2022-02-11 01:39:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.8596026490066224) internal successors, (4318), 1510 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4318 transitions. [2022-02-11 01:39:08,693 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4318 transitions. Word has length 33 [2022-02-11 01:39:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:08,693 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 4318 transitions. [2022-02-11 01:39:08,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4318 transitions. [2022-02-11 01:39:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:39:08,694 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:08,694 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:08,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:08,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:08,895 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash -553984637, now seen corresponding path program 86 times [2022-02-11 01:39:08,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:08,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824824862] [2022-02-11 01:39:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:09,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:09,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824824862] [2022-02-11 01:39:09,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824824862] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:09,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056055782] [2022-02-11 01:39:09,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:39:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:09,076 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:09,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-11 01:39:09,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:39:09,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 01:39:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:09,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-02-11 01:39:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:09,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:10,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056055782] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:10,033 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:10,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:39:10,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804527602] [2022-02-11 01:39:10,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:10,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:39:10,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:39:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:39:10,033 INFO L87 Difference]: Start difference. First operand 1511 states and 4318 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:11,855 INFO L93 Difference]: Finished difference Result 2483 states and 6896 transitions. [2022-02-11 01:39:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 01:39:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:39:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:11,859 INFO L225 Difference]: With dead ends: 2483 [2022-02-11 01:39:11,859 INFO L226 Difference]: Without dead ends: 2468 [2022-02-11 01:39:11,859 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=470, Invalid=2610, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:39:11,859 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 462 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:11,859 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1431 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:39:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-02-11 01:39:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1517. [2022-02-11 01:39:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 2.862796833773087) internal successors, (4340), 1516 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 4340 transitions. [2022-02-11 01:39:11,879 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 4340 transitions. Word has length 33 [2022-02-11 01:39:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:11,879 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 4340 transitions. [2022-02-11 01:39:11,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 4340 transitions. [2022-02-11 01:39:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:39:11,881 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:11,881 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:11,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-11 01:39:12,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-02-11 01:39:12,082 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2074584073, now seen corresponding path program 87 times [2022-02-11 01:39:12,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:12,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184018609] [2022-02-11 01:39:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:12,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:12,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184018609] [2022-02-11 01:39:12,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184018609] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:12,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815401438] [2022-02-11 01:39:12,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:39:12,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:12,259 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:12,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-11 01:39:12,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:39:12,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:12,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 01:39:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:12,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:13,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815401438] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:13,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:13,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-02-11 01:39:13,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130386039] [2022-02-11 01:39:13,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:13,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:39:13,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:39:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:39:13,164 INFO L87 Difference]: Start difference. First operand 1517 states and 4340 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:14,544 INFO L93 Difference]: Finished difference Result 2842 states and 7932 transitions. [2022-02-11 01:39:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:39:14,544 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:39:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:14,548 INFO L225 Difference]: With dead ends: 2842 [2022-02-11 01:39:14,548 INFO L226 Difference]: Without dead ends: 2827 [2022-02-11 01:39:14,549 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 01:39:14,549 INFO L934 BasicCegarLoop]: 110 mSDtfsCounter, 393 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:14,549 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1501 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 01:39:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-02-11 01:39:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1450. [2022-02-11 01:39:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 2.8612836438923397) internal successors, (4146), 1449 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 4146 transitions. [2022-02-11 01:39:14,570 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 4146 transitions. Word has length 33 [2022-02-11 01:39:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:14,570 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 4146 transitions. [2022-02-11 01:39:14,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 4146 transitions. [2022-02-11 01:39:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 01:39:14,572 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:14,572 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:14,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:14,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:14,772 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1434777477, now seen corresponding path program 1 times [2022-02-11 01:39:14,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:14,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130792030] [2022-02-11 01:39:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:39:14,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:14,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130792030] [2022-02-11 01:39:14,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130792030] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:14,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680030246] [2022-02-11 01:39:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:14,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:14,791 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:14,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-11 01:39:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:14,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-11 01:39:14,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:14,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:39:14,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:14,910 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:39:14,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-02-11 01:39:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:39:14,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680030246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:14,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:14,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-11 01:39:14,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812116412] [2022-02-11 01:39:14,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:14,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 01:39:14,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 01:39:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-11 01:39:14,924 INFO L87 Difference]: Start difference. First operand 1450 states and 4146 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:14,992 INFO L93 Difference]: Finished difference Result 1940 states and 5616 transitions. [2022-02-11 01:39:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 01:39:14,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 01:39:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:14,995 INFO L225 Difference]: With dead ends: 1940 [2022-02-11 01:39:14,995 INFO L226 Difference]: Without dead ends: 1940 [2022-02-11 01:39:14,995 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-11 01:39:14,995 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 118 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:14,995 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 252 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:39:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2022-02-11 01:39:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1810. [2022-02-11 01:39:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1809 states have (on average 2.902155887230514) internal successors, (5250), 1809 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 5250 transitions. [2022-02-11 01:39:15,027 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 5250 transitions. Word has length 37 [2022-02-11 01:39:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:15,027 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 5250 transitions. [2022-02-11 01:39:15,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 5250 transitions. [2022-02-11 01:39:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-11 01:39:15,029 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:15,029 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:15,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-11 01:39:15,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:15,242 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1856254911, now seen corresponding path program 88 times [2022-02-11 01:39:15,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:15,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554570065] [2022-02-11 01:39:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:15,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:15,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554570065] [2022-02-11 01:39:15,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554570065] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:15,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713292736] [2022-02-11 01:39:15,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:39:15,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:15,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:15,264 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:15,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-11 01:39:15,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:39:15,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:15,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-11 01:39:15,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:15,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:15,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713292736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:15,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:15,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-02-11 01:39:15,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391169612] [2022-02-11 01:39:15,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:15,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 01:39:15,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 01:39:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:39:15,397 INFO L87 Difference]: Start difference. First operand 1810 states and 5250 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:15,422 INFO L93 Difference]: Finished difference Result 2953 states and 8537 transitions. [2022-02-11 01:39:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 01:39:15,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-02-11 01:39:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:15,426 INFO L225 Difference]: With dead ends: 2953 [2022-02-11 01:39:15,427 INFO L226 Difference]: Without dead ends: 2856 [2022-02-11 01:39:15,427 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:39:15,427 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:15,427 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 79 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:39:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-02-11 01:39:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2284. [2022-02-11 01:39:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2283 states have (on average 2.9890494962768286) internal successors, (6824), 2283 states have internal predecessors, (6824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 6824 transitions. [2022-02-11 01:39:15,457 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 6824 transitions. Word has length 38 [2022-02-11 01:39:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:15,457 INFO L470 AbstractCegarLoop]: Abstraction has 2284 states and 6824 transitions. [2022-02-11 01:39:15,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 6824 transitions. [2022-02-11 01:39:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 01:39:15,460 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:15,460 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:15,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-11 01:39:15,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:15,661 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1630144413, now seen corresponding path program 89 times [2022-02-11 01:39:15,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:15,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260812980] [2022-02-11 01:39:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:39:15,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:15,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260812980] [2022-02-11 01:39:15,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260812980] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:15,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212817227] [2022-02-11 01:39:15,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:39:15,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:15,677 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-11 01:39:15,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:39:15,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:15,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-11 01:39:15,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:39:15,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-11 01:39:15,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212817227] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:39:15,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-11 01:39:15,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-02-11 01:39:15,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365315670] [2022-02-11 01:39:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:39:15,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 01:39:15,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 01:39:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:39:15,762 INFO L87 Difference]: Start difference. First operand 2284 states and 6824 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:15,804 INFO L93 Difference]: Finished difference Result 6496 states and 19271 transitions. [2022-02-11 01:39:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 01:39:15,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 01:39:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:15,815 INFO L225 Difference]: With dead ends: 6496 [2022-02-11 01:39:15,816 INFO L226 Difference]: Without dead ends: 6091 [2022-02-11 01:39:15,816 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:39:15,816 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 79 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:15,816 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 78 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:39:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2022-02-11 01:39:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 5331. [2022-02-11 01:39:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 3.052908067542214) internal successors, (16272), 5330 states have internal predecessors, (16272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 16272 transitions. [2022-02-11 01:39:15,897 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 16272 transitions. Word has length 39 [2022-02-11 01:39:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:15,898 INFO L470 AbstractCegarLoop]: Abstraction has 5331 states and 16272 transitions. [2022-02-11 01:39:15,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 16272 transitions. [2022-02-11 01:39:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 01:39:15,905 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:15,905 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:15,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:16,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-02-11 01:39:16,121 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1568623265, now seen corresponding path program 2 times [2022-02-11 01:39:16,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:16,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805618658] [2022-02-11 01:39:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:16,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:16,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805618658] [2022-02-11 01:39:16,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805618658] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:16,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878708273] [2022-02-11 01:39:16,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:39:16,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:16,175 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-11 01:39:16,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:39:16,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 01:39:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:16,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:16,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:16,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:16,338 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:16,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-02-11 01:39:16,366 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:16,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-02-11 01:39:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:16,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878708273] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:16,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:16,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-02-11 01:39:16,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808241431] [2022-02-11 01:39:16,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:16,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 01:39:16,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 01:39:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-02-11 01:39:16,399 INFO L87 Difference]: Start difference. First operand 5331 states and 16272 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:16,658 INFO L93 Difference]: Finished difference Result 7486 states and 22666 transitions. [2022-02-11 01:39:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 01:39:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 01:39:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:16,670 INFO L225 Difference]: With dead ends: 7486 [2022-02-11 01:39:16,670 INFO L226 Difference]: Without dead ends: 7486 [2022-02-11 01:39:16,670 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:39:16,671 INFO L934 BasicCegarLoop]: 86 mSDtfsCounter, 203 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:16,671 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 898 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:39:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2022-02-11 01:39:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 6990. [2022-02-11 01:39:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 3.0479324653026185) internal successors, (21302), 6989 states have internal predecessors, (21302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 21302 transitions. [2022-02-11 01:39:16,781 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 21302 transitions. Word has length 43 [2022-02-11 01:39:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:16,781 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 21302 transitions. [2022-02-11 01:39:16,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 21302 transitions. [2022-02-11 01:39:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:16,791 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:16,791 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:16,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-11 01:39:16,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:16,991 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1131601065, now seen corresponding path program 3 times [2022-02-11 01:39:16,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:16,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955003953] [2022-02-11 01:39:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:17,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:17,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955003953] [2022-02-11 01:39:17,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955003953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:17,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972653980] [2022-02-11 01:39:17,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:39:17,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:17,545 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:17,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-11 01:39:17,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:39:17,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:17,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:17,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:17,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:18,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:18,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:19,403 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:19,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:19,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:19,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:19,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972653980] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:19,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:19,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:39:19,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262599037] [2022-02-11 01:39:19,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:19,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:39:19,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:39:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2641, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:39:19,780 INFO L87 Difference]: Start difference. First operand 6990 states and 21302 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:22,760 INFO L93 Difference]: Finished difference Result 15344 states and 45923 transitions. [2022-02-11 01:39:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:39:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:22,789 INFO L225 Difference]: With dead ends: 15344 [2022-02-11 01:39:22,789 INFO L226 Difference]: Without dead ends: 15187 [2022-02-11 01:39:22,789 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=581, Invalid=6901, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:39:22,789 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 338 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:22,790 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2952 Invalid, 3890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:39:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2022-02-11 01:39:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 7110. [2022-02-11 01:39:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 7109 states have (on average 3.039668026445351) internal successors, (21609), 7109 states have internal predecessors, (21609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 21609 transitions. [2022-02-11 01:39:22,984 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 21609 transitions. Word has length 48 [2022-02-11 01:39:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:22,984 INFO L470 AbstractCegarLoop]: Abstraction has 7110 states and 21609 transitions. [2022-02-11 01:39:22,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 21609 transitions. [2022-02-11 01:39:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:22,993 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:22,993 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:23,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-11 01:39:23,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:23,194 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash 362868969, now seen corresponding path program 4 times [2022-02-11 01:39:23,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:23,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22932696] [2022-02-11 01:39:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:23,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:23,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22932696] [2022-02-11 01:39:23,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22932696] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:23,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373923035] [2022-02-11 01:39:23,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:39:23,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:23,734 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:23,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-11 01:39:23,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:39:23,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:23,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:23,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:24,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:24,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:25,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:25,415 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 34 treesize of output 36 [2022-02-11 01:39:25,550 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:25,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:25,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373923035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:25,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:25,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:39:25,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583475469] [2022-02-11 01:39:25,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:25,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:39:25,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:39:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:39:25,790 INFO L87 Difference]: Start difference. First operand 7110 states and 21609 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:28,599 INFO L93 Difference]: Finished difference Result 15285 states and 45803 transitions. [2022-02-11 01:39:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:39:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:28,627 INFO L225 Difference]: With dead ends: 15285 [2022-02-11 01:39:28,627 INFO L226 Difference]: Without dead ends: 15250 [2022-02-11 01:39:28,628 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:39:28,628 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 264 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:28,628 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 3074 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:39:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15250 states. [2022-02-11 01:39:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15250 to 7122. [2022-02-11 01:39:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7122 states, 7121 states have (on average 3.0386181716051115) internal successors, (21638), 7121 states have internal predecessors, (21638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 21638 transitions. [2022-02-11 01:39:28,791 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 21638 transitions. Word has length 48 [2022-02-11 01:39:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:28,791 INFO L470 AbstractCegarLoop]: Abstraction has 7122 states and 21638 transitions. [2022-02-11 01:39:28,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 21638 transitions. [2022-02-11 01:39:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:28,801 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:28,801 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:28,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-11 01:39:29,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:29,002 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1239051433, now seen corresponding path program 5 times [2022-02-11 01:39:29,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:29,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033840075] [2022-02-11 01:39:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:29,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:29,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033840075] [2022-02-11 01:39:29,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033840075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:29,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861599593] [2022-02-11 01:39:29,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:39:29,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:29,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:29,535 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:29,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-11 01:39:29,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:39:29,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:29,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:39:29,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:29,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:29,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:30,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:31,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:31,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:31,401 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:31,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:31,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861599593] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:31,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:31,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:39:31,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988507582] [2022-02-11 01:39:31,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:31,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:39:31,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:39:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:39:31,670 INFO L87 Difference]: Start difference. First operand 7122 states and 21638 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:34,438 INFO L93 Difference]: Finished difference Result 12667 states and 38256 transitions. [2022-02-11 01:39:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:39:34,438 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:34,463 INFO L225 Difference]: With dead ends: 12667 [2022-02-11 01:39:34,463 INFO L226 Difference]: Without dead ends: 12623 [2022-02-11 01:39:34,463 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=531, Invalid=5949, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:39:34,463 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 331 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:34,464 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2605 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3268 Invalid, 0 Unknown, 82 Unchecked, 1.2s Time] [2022-02-11 01:39:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-11 01:39:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-11 01:39:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.038780384993677) internal successors, (21627), 7117 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21627 transitions. [2022-02-11 01:39:34,614 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21627 transitions. Word has length 48 [2022-02-11 01:39:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:34,614 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21627 transitions. [2022-02-11 01:39:34,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21627 transitions. [2022-02-11 01:39:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:34,624 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:34,624 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:34,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-11 01:39:34,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:34,824 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:34,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash 504584109, now seen corresponding path program 6 times [2022-02-11 01:39:34,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:34,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906867654] [2022-02-11 01:39:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:35,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:35,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906867654] [2022-02-11 01:39:35,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906867654] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:35,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842973790] [2022-02-11 01:39:35,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:39:35,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:35,380 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:35,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-11 01:39:35,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:39:35,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:35,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:35,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:35,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:35,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:36,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:37,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:37,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:37,317 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:37,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:37,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842973790] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:37,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:37,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:39:37,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578989650] [2022-02-11 01:39:37,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:37,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:39:37,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:39:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:39:37,555 INFO L87 Difference]: Start difference. First operand 7118 states and 21627 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:39,763 INFO L93 Difference]: Finished difference Result 12337 states and 37157 transitions. [2022-02-11 01:39:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:39:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:39,786 INFO L225 Difference]: With dead ends: 12337 [2022-02-11 01:39:39,786 INFO L226 Difference]: Without dead ends: 12305 [2022-02-11 01:39:39,786 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=420, Invalid=4692, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:39:39,787 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 306 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 3412 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:39,787 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3454 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3412 Invalid, 0 Unknown, 97 Unchecked, 1.2s Time] [2022-02-11 01:39:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2022-02-11 01:39:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 7144. [2022-02-11 01:39:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 7143 states have (on average 3.037239255214896) internal successors, (21695), 7143 states have internal predecessors, (21695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 21695 transitions. [2022-02-11 01:39:39,924 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 21695 transitions. Word has length 48 [2022-02-11 01:39:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:39,924 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 21695 transitions. [2022-02-11 01:39:39,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 21695 transitions. [2022-02-11 01:39:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:39,933 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:39,934 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:39,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-11 01:39:40,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-11 01:39:40,134 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:40,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1859036179, now seen corresponding path program 7 times [2022-02-11 01:39:40,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:40,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491517026] [2022-02-11 01:39:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:40,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:40,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491517026] [2022-02-11 01:39:40,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491517026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:40,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482453754] [2022-02-11 01:39:40,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:39:40,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:40,658 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:40,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-11 01:39:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:40,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:40,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:40,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:41,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:41,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:42,346 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:42,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:42,481 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:42,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:42,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482453754] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:42,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:42,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:39:42,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419855316] [2022-02-11 01:39:42,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:42,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:39:42,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:39:42,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:39:42,723 INFO L87 Difference]: Start difference. First operand 7144 states and 21695 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:45,198 INFO L93 Difference]: Finished difference Result 15325 states and 45842 transitions. [2022-02-11 01:39:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:39:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:45,227 INFO L225 Difference]: With dead ends: 15325 [2022-02-11 01:39:45,227 INFO L226 Difference]: Without dead ends: 15255 [2022-02-11 01:39:45,228 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=522, Invalid=6120, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:39:45,228 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 379 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:45,228 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 2677 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2919 Invalid, 0 Unknown, 262 Unchecked, 1.1s Time] [2022-02-11 01:39:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2022-02-11 01:39:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 7136. [2022-02-11 01:39:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.037000700770848) internal successors, (21669), 7135 states have internal predecessors, (21669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21669 transitions. [2022-02-11 01:39:45,403 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21669 transitions. Word has length 48 [2022-02-11 01:39:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:45,403 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21669 transitions. [2022-02-11 01:39:45,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21669 transitions. [2022-02-11 01:39:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:45,412 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:45,412 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:45,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-11 01:39:45,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-02-11 01:39:45,614 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2098203905, now seen corresponding path program 8 times [2022-02-11 01:39:45,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:45,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648525220] [2022-02-11 01:39:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:45,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:46,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:46,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648525220] [2022-02-11 01:39:46,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648525220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:46,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674319145] [2022-02-11 01:39:46,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:39:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:46,140 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:46,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-11 01:39:46,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:39:46,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:46,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:46,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:46,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:46,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:47,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:47,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:47,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:47,963 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:47,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:48,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674319145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:48,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:48,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:39:48,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440628901] [2022-02-11 01:39:48,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:48,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:39:48,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:48,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:39:48,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:39:48,197 INFO L87 Difference]: Start difference. First operand 7136 states and 21669 transitions. Second operand has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:51,090 INFO L93 Difference]: Finished difference Result 15286 states and 45733 transitions. [2022-02-11 01:39:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:39:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:51,118 INFO L225 Difference]: With dead ends: 15286 [2022-02-11 01:39:51,118 INFO L226 Difference]: Without dead ends: 15253 [2022-02-11 01:39:51,119 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=539, Invalid=6433, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:39:51,119 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 325 mSDsluCounter, 3845 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:51,119 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 3089 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:39:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15253 states. [2022-02-11 01:39:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15253 to 7124. [2022-02-11 01:39:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0380457672329073) internal successors, (21640), 7123 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21640 transitions. [2022-02-11 01:39:51,285 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21640 transitions. Word has length 48 [2022-02-11 01:39:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:51,285 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21640 transitions. [2022-02-11 01:39:51,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2) internal successors, (121), 54 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21640 transitions. [2022-02-11 01:39:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:51,311 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:51,312 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:51,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:51,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-02-11 01:39:51,512 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -778563351, now seen corresponding path program 9 times [2022-02-11 01:39:51,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:51,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107890267] [2022-02-11 01:39:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:52,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:52,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107890267] [2022-02-11 01:39:52,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107890267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:52,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248965815] [2022-02-11 01:39:52,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:39:52,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:52,083 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:52,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-11 01:39:52,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:39:52,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:52,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:52,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:52,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:52,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:39:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:52,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:53,751 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:53,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:53,881 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:53,881 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 37 treesize of output 39 [2022-02-11 01:39:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:54,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248965815] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:54,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:54,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:39:54,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412504352] [2022-02-11 01:39:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:54,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:39:54,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:39:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:39:54,127 INFO L87 Difference]: Start difference. First operand 7124 states and 21640 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:39:56,854 INFO L93 Difference]: Finished difference Result 15265 states and 45703 transitions. [2022-02-11 01:39:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 01:39:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:39:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:39:56,885 INFO L225 Difference]: With dead ends: 15265 [2022-02-11 01:39:56,885 INFO L226 Difference]: Without dead ends: 15167 [2022-02-11 01:39:56,885 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=570, Invalid=6570, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:39:56,885 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 343 mSDsluCounter, 3328 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:39:56,885 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2658 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:39:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15167 states. [2022-02-11 01:39:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15167 to 7104. [2022-02-11 01:39:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 7103 states have (on average 3.040546248064198) internal successors, (21597), 7103 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 21597 transitions. [2022-02-11 01:39:57,045 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 21597 transitions. Word has length 48 [2022-02-11 01:39:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:39:57,045 INFO L470 AbstractCegarLoop]: Abstraction has 7104 states and 21597 transitions. [2022-02-11 01:39:57,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:39:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 21597 transitions. [2022-02-11 01:39:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:39:57,055 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:39:57,055 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:39:57,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-11 01:39:57,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:57,257 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:39:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:39:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 236808205, now seen corresponding path program 10 times [2022-02-11 01:39:57,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:39:57,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619194293] [2022-02-11 01:39:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:39:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:39:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:39:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:57,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:39:57,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619194293] [2022-02-11 01:39:57,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619194293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:39:57,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758192210] [2022-02-11 01:39:57,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:39:57,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:39:57,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:39:57,789 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:39:57,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-11 01:39:57,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:39:57,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:39:57,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:39:57,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:39:58,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:58,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:39:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:58,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:39:59,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:59,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:39:59,601 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:39:59,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:39:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:39:59,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758192210] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:39:59,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:39:59,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:39:59,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119368274] [2022-02-11 01:39:59,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:39:59,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:39:59,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:39:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:39:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2640, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:39:59,837 INFO L87 Difference]: Start difference. First operand 7104 states and 21597 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:02,600 INFO L93 Difference]: Finished difference Result 15437 states and 46119 transitions. [2022-02-11 01:40:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:40:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:02,632 INFO L225 Difference]: With dead ends: 15437 [2022-02-11 01:40:02,632 INFO L226 Difference]: Without dead ends: 15376 [2022-02-11 01:40:02,633 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6598, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:40:02,633 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 360 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:02,633 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2939 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3496 Invalid, 0 Unknown, 276 Unchecked, 1.3s Time] [2022-02-11 01:40:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2022-02-11 01:40:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 7220. [2022-02-11 01:40:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 7219 states have (on average 3.029089901648428) internal successors, (21867), 7219 states have internal predecessors, (21867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 21867 transitions. [2022-02-11 01:40:02,808 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 21867 transitions. Word has length 48 [2022-02-11 01:40:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:02,808 INFO L470 AbstractCegarLoop]: Abstraction has 7220 states and 21867 transitions. [2022-02-11 01:40:02,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 21867 transitions. [2022-02-11 01:40:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:02,818 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:02,818 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:02,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-11 01:40:03,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-02-11 01:40:03,018 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:03,019 INFO L85 PathProgramCache]: Analyzing trace with hash -834397847, now seen corresponding path program 11 times [2022-02-11 01:40:03,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:03,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898274951] [2022-02-11 01:40:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:03,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:03,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898274951] [2022-02-11 01:40:03,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898274951] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:03,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533039350] [2022-02-11 01:40:03,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:40:03,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:03,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:03,582 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:03,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-11 01:40:03,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:40:03,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:03,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:40:03,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:03,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:03,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:04,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:05,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:05,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:05,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:05,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:05,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533039350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:05,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:05,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:40:05,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005431103] [2022-02-11 01:40:05,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:05,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:40:05,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:40:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2640, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:40:05,786 INFO L87 Difference]: Start difference. First operand 7220 states and 21867 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:08,709 INFO L93 Difference]: Finished difference Result 15376 states and 45967 transitions. [2022-02-11 01:40:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:40:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:08,738 INFO L225 Difference]: With dead ends: 15376 [2022-02-11 01:40:08,738 INFO L226 Difference]: Without dead ends: 15269 [2022-02-11 01:40:08,738 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=542, Invalid=6598, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:40:08,738 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 363 mSDsluCounter, 3964 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 4010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:08,739 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 3159 Invalid, 4010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:40:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15269 states. [2022-02-11 01:40:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15269 to 7164. [2022-02-11 01:40:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7164 states, 7163 states have (on average 3.034063939690074) internal successors, (21733), 7163 states have internal predecessors, (21733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 21733 transitions. [2022-02-11 01:40:08,903 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 21733 transitions. Word has length 48 [2022-02-11 01:40:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:08,903 INFO L470 AbstractCegarLoop]: Abstraction has 7164 states and 21733 transitions. [2022-02-11 01:40:08,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 21733 transitions. [2022-02-11 01:40:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:08,912 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:08,912 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:08,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-11 01:40:09,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:09,113 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash 201175157, now seen corresponding path program 12 times [2022-02-11 01:40:09,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:09,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107244938] [2022-02-11 01:40:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:09,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:09,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107244938] [2022-02-11 01:40:09,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107244938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:09,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648188295] [2022-02-11 01:40:09,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:40:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:09,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:09,695 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:09,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-11 01:40:09,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:40:09,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:40:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:09,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:10,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:10,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:11,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:11,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:11,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:11,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-11 01:40:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:11,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648188295] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:11,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:11,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-11 01:40:11,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224555596] [2022-02-11 01:40:11,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:11,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:40:11,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:40:11,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:40:11,950 INFO L87 Difference]: Start difference. First operand 7164 states and 21733 transitions. Second operand has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:16,381 INFO L93 Difference]: Finished difference Result 13727 states and 40870 transitions. [2022-02-11 01:40:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 01:40:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:16,406 INFO L225 Difference]: With dead ends: 13727 [2022-02-11 01:40:16,406 INFO L226 Difference]: Without dead ends: 13687 [2022-02-11 01:40:16,406 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2645 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=708, Invalid=8798, Unknown=0, NotChecked=0, Total=9506 [2022-02-11 01:40:16,407 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 394 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 4897 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:16,407 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 2745 Invalid, 4990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4897 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-11 01:40:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13687 states. [2022-02-11 01:40:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13687 to 7182. [2022-02-11 01:40:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0327252471800583) internal successors, (21778), 7181 states have internal predecessors, (21778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21778 transitions. [2022-02-11 01:40:16,543 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21778 transitions. Word has length 48 [2022-02-11 01:40:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:16,543 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21778 transitions. [2022-02-11 01:40:16,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 57 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21778 transitions. [2022-02-11 01:40:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:16,552 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:16,552 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:16,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-11 01:40:16,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-11 01:40:16,753 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -27583687, now seen corresponding path program 13 times [2022-02-11 01:40:16,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:16,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349911085] [2022-02-11 01:40:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:16,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:17,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:17,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349911085] [2022-02-11 01:40:17,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349911085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:17,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024061866] [2022-02-11 01:40:17,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:40:17,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:17,295 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:17,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-11 01:40:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:17,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:17,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:17,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:18,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:19,028 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:19,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:19,158 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:19,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:19,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024061866] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:19,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:19,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:40:19,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283508000] [2022-02-11 01:40:19,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:19,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:40:19,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:40:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:40:19,394 INFO L87 Difference]: Start difference. First operand 7182 states and 21778 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:21,975 INFO L93 Difference]: Finished difference Result 15331 states and 45899 transitions. [2022-02-11 01:40:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:40:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:22,007 INFO L225 Difference]: With dead ends: 15331 [2022-02-11 01:40:22,008 INFO L226 Difference]: Without dead ends: 15286 [2022-02-11 01:40:22,008 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:40:22,008 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 317 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 3535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:22,008 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2563 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:40:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15286 states. [2022-02-11 01:40:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15286 to 7176. [2022-02-11 01:40:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7175 states have (on average 3.0326132404181183) internal successors, (21759), 7175 states have internal predecessors, (21759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 21759 transitions. [2022-02-11 01:40:22,198 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 21759 transitions. Word has length 48 [2022-02-11 01:40:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:22,198 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 21759 transitions. [2022-02-11 01:40:22,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 21759 transitions. [2022-02-11 01:40:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:22,208 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:22,208 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:22,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-11 01:40:22,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:22,409 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash -974315487, now seen corresponding path program 14 times [2022-02-11 01:40:22,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:22,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375233411] [2022-02-11 01:40:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:22,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:22,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375233411] [2022-02-11 01:40:22,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375233411] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:22,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634950879] [2022-02-11 01:40:22,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:40:22,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:22,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:22,965 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:22,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-11 01:40:22,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:40:22,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:22,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:22,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:23,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:23,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:23,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:24,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:24,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:24,850 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:24,851 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:25,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634950879] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:25,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:25,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:40:25,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796277959] [2022-02-11 01:40:25,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:25,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:40:25,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:25,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:40:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:40:25,103 INFO L87 Difference]: Start difference. First operand 7176 states and 21759 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:27,560 INFO L93 Difference]: Finished difference Result 12406 states and 37302 transitions. [2022-02-11 01:40:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:40:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:27,585 INFO L225 Difference]: With dead ends: 12406 [2022-02-11 01:40:27,586 INFO L226 Difference]: Without dead ends: 12374 [2022-02-11 01:40:27,586 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 59 SyntacticMatches, 19 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=470, Invalid=5230, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:40:27,586 INFO L934 BasicCegarLoop]: 117 mSDtfsCounter, 337 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:27,586 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2645 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2747 Invalid, 0 Unknown, 241 Unchecked, 1.0s Time] [2022-02-11 01:40:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12374 states. [2022-02-11 01:40:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12374 to 7270. [2022-02-11 01:40:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0215985692667493) internal successors, (21964), 7269 states have internal predecessors, (21964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21964 transitions. [2022-02-11 01:40:27,754 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21964 transitions. Word has length 48 [2022-02-11 01:40:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21964 transitions. [2022-02-11 01:40:27,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21964 transitions. [2022-02-11 01:40:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:27,764 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:27,764 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:27,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-02-11 01:40:27,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-02-11 01:40:27,965 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:27,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -826540769, now seen corresponding path program 15 times [2022-02-11 01:40:27,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:27,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872588712] [2022-02-11 01:40:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:28,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:28,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872588712] [2022-02-11 01:40:28,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872588712] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:28,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444270494] [2022-02-11 01:40:28,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:40:28,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:28,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:28,529 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:28,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-11 01:40:28,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:40:28,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:28,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:40:28,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:28,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:28,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:29,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:30,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:30,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:30,407 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:30,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:30,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444270494] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:30,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:30,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:40:30,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067287847] [2022-02-11 01:40:30,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:30,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:40:30,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:40:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:40:30,625 INFO L87 Difference]: Start difference. First operand 7270 states and 21964 transitions. Second operand has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:33,702 INFO L93 Difference]: Finished difference Result 15582 states and 46390 transitions. [2022-02-11 01:40:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:40:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:33,731 INFO L225 Difference]: With dead ends: 15582 [2022-02-11 01:40:33,731 INFO L226 Difference]: Without dead ends: 15439 [2022-02-11 01:40:33,731 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=544, Invalid=6596, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:40:33,732 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 366 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 4268 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:33,732 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 3546 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4268 Invalid, 0 Unknown, 207 Unchecked, 1.6s Time] [2022-02-11 01:40:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15439 states. [2022-02-11 01:40:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15439 to 7182. [2022-02-11 01:40:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0318897089541847) internal successors, (21772), 7181 states have internal predecessors, (21772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21772 transitions. [2022-02-11 01:40:33,902 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21772 transitions. Word has length 48 [2022-02-11 01:40:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21772 transitions. [2022-02-11 01:40:33,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21772 transitions. [2022-02-11 01:40:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:33,912 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:33,912 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:33,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-11 01:40:34,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:34,113 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1128753005, now seen corresponding path program 16 times [2022-02-11 01:40:34,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:34,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399227805] [2022-02-11 01:40:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:34,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:34,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:34,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399227805] [2022-02-11 01:40:34,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399227805] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:34,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510985010] [2022-02-11 01:40:34,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:40:34,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:34,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:34,681 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:34,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-11 01:40:34,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:40:34,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:34,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:34,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:34,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:35,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:35,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:36,377 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:36,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:36,517 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:36,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:36,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510985010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:36,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:36,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:40:36,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799683914] [2022-02-11 01:40:36,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:36,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:40:36,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:40:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:40:36,770 INFO L87 Difference]: Start difference. First operand 7182 states and 21772 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:39,399 INFO L93 Difference]: Finished difference Result 15433 states and 46066 transitions. [2022-02-11 01:40:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:40:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:39,459 INFO L225 Difference]: With dead ends: 15433 [2022-02-11 01:40:39,460 INFO L226 Difference]: Without dead ends: 15421 [2022-02-11 01:40:39,460 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=542, Invalid=6430, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:40:39,460 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 400 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:39,460 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2801 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3310 Invalid, 0 Unknown, 242 Unchecked, 1.2s Time] [2022-02-11 01:40:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2022-02-11 01:40:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 7218. [2022-02-11 01:40:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7218 states, 7217 states have (on average 3.0288208396840792) internal successors, (21859), 7217 states have internal predecessors, (21859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7218 states to 7218 states and 21859 transitions. [2022-02-11 01:40:39,611 INFO L78 Accepts]: Start accepts. Automaton has 7218 states and 21859 transitions. Word has length 48 [2022-02-11 01:40:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:39,611 INFO L470 AbstractCegarLoop]: Abstraction has 7218 states and 21859 transitions. [2022-02-11 01:40:39,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7218 states and 21859 transitions. [2022-02-11 01:40:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:39,621 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:39,621 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:39,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-11 01:40:39,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:39,822 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1498757225, now seen corresponding path program 17 times [2022-02-11 01:40:39,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:39,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718355948] [2022-02-11 01:40:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:39,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:40,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:40,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718355948] [2022-02-11 01:40:40,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718355948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:40,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457565065] [2022-02-11 01:40:40,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:40:40,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:40,356 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:40,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-11 01:40:40,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:40:40,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:40:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:40,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:40,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:41,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:42,063 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:42,063 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:42,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:42,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:42,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457565065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:42,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:42,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:40:42,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550353593] [2022-02-11 01:40:42,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:42,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:40:42,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:40:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:40:42,438 INFO L87 Difference]: Start difference. First operand 7218 states and 21859 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:45,252 INFO L93 Difference]: Finished difference Result 15413 states and 46036 transitions. [2022-02-11 01:40:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-11 01:40:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:45,283 INFO L225 Difference]: With dead ends: 15413 [2022-02-11 01:40:45,284 INFO L226 Difference]: Without dead ends: 15179 [2022-02-11 01:40:45,284 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=542, Invalid=6430, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:40:45,284 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 397 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:45,284 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3096 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3695 Invalid, 0 Unknown, 292 Unchecked, 1.3s Time] [2022-02-11 01:40:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15179 states. [2022-02-11 01:40:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15179 to 7116. [2022-02-11 01:40:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7116 states, 7115 states have (on average 3.036261419536191) internal successors, (21603), 7115 states have internal predecessors, (21603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 21603 transitions. [2022-02-11 01:40:45,470 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 21603 transitions. Word has length 48 [2022-02-11 01:40:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:45,470 INFO L470 AbstractCegarLoop]: Abstraction has 7116 states and 21603 transitions. [2022-02-11 01:40:45,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 21603 transitions. [2022-02-11 01:40:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:45,480 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:45,480 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:45,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-11 01:40:45,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-02-11 01:40:45,681 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 766644457, now seen corresponding path program 18 times [2022-02-11 01:40:45,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:45,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108430693] [2022-02-11 01:40:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:46,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:46,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108430693] [2022-02-11 01:40:46,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108430693] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:46,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300381944] [2022-02-11 01:40:46,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:40:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:46,255 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:46,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-11 01:40:46,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:40:46,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:46,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:46,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:46,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:46,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:47,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:48,129 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:48,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:48,273 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:48,273 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 37 treesize of output 39 [2022-02-11 01:40:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:48,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300381944] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:48,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:48,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:40:48,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420439755] [2022-02-11 01:40:48,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:48,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:40:48,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:40:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2647, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:40:48,530 INFO L87 Difference]: Start difference. First operand 7116 states and 21603 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:51,463 INFO L93 Difference]: Finished difference Result 12676 states and 38259 transitions. [2022-02-11 01:40:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:40:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:51,486 INFO L225 Difference]: With dead ends: 12676 [2022-02-11 01:40:51,486 INFO L226 Difference]: Without dead ends: 12641 [2022-02-11 01:40:51,486 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1994 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=557, Invalid=6085, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:40:51,486 INFO L934 BasicCegarLoop]: 102 mSDtfsCounter, 343 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:51,486 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2699 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:40:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2022-02-11 01:40:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 7124. [2022-02-11 01:40:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0355187421030463) internal successors, (21622), 7123 states have internal predecessors, (21622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21622 transitions. [2022-02-11 01:40:51,619 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21622 transitions. Word has length 48 [2022-02-11 01:40:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:51,619 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21622 transitions. [2022-02-11 01:40:51,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21622 transitions. [2022-02-11 01:40:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:51,628 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:51,628 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:51,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-02-11 01:40:51,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:51,829 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1642826921, now seen corresponding path program 19 times [2022-02-11 01:40:51,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:51,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968006023] [2022-02-11 01:40:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:52,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:52,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968006023] [2022-02-11 01:40:52,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968006023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:52,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586390474] [2022-02-11 01:40:52,399 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:40:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:52,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:52,400 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:52,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-11 01:40:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:52,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:52,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:52,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:40:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:53,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:54,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:54,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:54,225 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:54,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:40:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:54,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586390474] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:40:54,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:40:54,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:40:54,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627554857] [2022-02-11 01:40:54,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:40:54,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:40:54,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:40:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:40:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:40:54,457 INFO L87 Difference]: Start difference. First operand 7124 states and 21622 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:40:57,157 INFO L93 Difference]: Finished difference Result 12707 states and 38318 transitions. [2022-02-11 01:40:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:40:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:40:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:40:57,181 INFO L225 Difference]: With dead ends: 12707 [2022-02-11 01:40:57,181 INFO L226 Difference]: Without dead ends: 12663 [2022-02-11 01:40:57,181 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=533, Invalid=5629, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:40:57,182 INFO L934 BasicCegarLoop]: 104 mSDtfsCounter, 356 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:40:57,182 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2571 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3264 Invalid, 0 Unknown, 59 Unchecked, 1.2s Time] [2022-02-11 01:40:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12663 states. [2022-02-11 01:40:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12663 to 7120. [2022-02-11 01:40:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.0361005759235846) internal successors, (21614), 7119 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21614 transitions. [2022-02-11 01:40:57,320 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21614 transitions. Word has length 48 [2022-02-11 01:40:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:40:57,320 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21614 transitions. [2022-02-11 01:40:57,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:40:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21614 transitions. [2022-02-11 01:40:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:40:57,329 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:40:57,329 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:40:57,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-11 01:40:57,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:57,529 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:40:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:40:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -460309207, now seen corresponding path program 20 times [2022-02-11 01:40:57,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:40:57,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891479316] [2022-02-11 01:40:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:40:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:40:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:40:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:58,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:40:58,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891479316] [2022-02-11 01:40:58,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891479316] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:40:58,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174482935] [2022-02-11 01:40:58,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:40:58,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:40:58,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:40:58,082 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:40:58,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-11 01:40:58,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:40:58,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:40:58,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:40:58,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:40:58,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:58,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:40:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:40:58,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:40:59,713 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:59,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:40:59,853 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:40:59,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:00,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174482935] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:00,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:00,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:41:00,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976090231] [2022-02-11 01:41:00,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:00,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:41:00,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:41:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:41:00,150 INFO L87 Difference]: Start difference. First operand 7120 states and 21614 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:02,436 INFO L93 Difference]: Finished difference Result 15269 states and 45737 transitions. [2022-02-11 01:41:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:02,469 INFO L225 Difference]: With dead ends: 15269 [2022-02-11 01:41:02,469 INFO L226 Difference]: Without dead ends: 15234 [2022-02-11 01:41:02,469 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=482, Invalid=5680, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:41:02,470 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 298 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:02,470 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2215 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:41:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2022-02-11 01:41:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 7124. [2022-02-11 01:41:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 3.0355187421030463) internal successors, (21622), 7123 states have internal predecessors, (21622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 21622 transitions. [2022-02-11 01:41:02,679 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 21622 transitions. Word has length 48 [2022-02-11 01:41:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:02,679 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 21622 transitions. [2022-02-11 01:41:02,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 21622 transitions. [2022-02-11 01:41:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:02,689 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:02,689 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:02,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-11 01:41:02,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:02,890 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2001740685, now seen corresponding path program 21 times [2022-02-11 01:41:02,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:02,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222709464] [2022-02-11 01:41:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:03,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:03,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222709464] [2022-02-11 01:41:03,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222709464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:03,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074208068] [2022-02-11 01:41:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:41:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:03,414 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:03,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-11 01:41:03,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:41:03,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:03,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:41:03,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:03,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:03,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:04,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:05,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:05,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:05,345 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:05,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:05,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074208068] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:05,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:05,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:41:05,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833278340] [2022-02-11 01:41:05,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:05,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:41:05,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:41:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:41:05,582 INFO L87 Difference]: Start difference. First operand 7124 states and 21622 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:07,980 INFO L93 Difference]: Finished difference Result 15273 states and 45743 transitions. [2022-02-11 01:41:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:07,980 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:07,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:08,011 INFO L225 Difference]: With dead ends: 15273 [2022-02-11 01:41:08,011 INFO L226 Difference]: Without dead ends: 15230 [2022-02-11 01:41:08,011 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=482, Invalid=5680, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:41:08,011 INFO L934 BasicCegarLoop]: 104 mSDtfsCounter, 313 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:08,011 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2366 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:41:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2022-02-11 01:41:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 7120. [2022-02-11 01:41:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.035819637589549) internal successors, (21612), 7119 states have internal predecessors, (21612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21612 transitions. [2022-02-11 01:41:08,193 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21612 transitions. Word has length 48 [2022-02-11 01:41:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:08,194 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21612 transitions. [2022-02-11 01:41:08,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21612 transitions. [2022-02-11 01:41:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:08,203 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:08,204 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:08,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-11 01:41:08,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-11 01:41:08,404 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1145793037, now seen corresponding path program 22 times [2022-02-11 01:41:08,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:08,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277614058] [2022-02-11 01:41:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:08,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:08,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277614058] [2022-02-11 01:41:08,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277614058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:08,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332413972] [2022-02-11 01:41:08,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:41:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:08,990 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:08,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-11 01:41:09,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:41:09,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:09,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:09,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:09,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:09,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:09,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:10,722 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:10,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:10,844 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:10,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:11,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332413972] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:11,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:11,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:41:11,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475428707] [2022-02-11 01:41:11,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:11,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:41:11,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:41:11,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:41:11,066 INFO L87 Difference]: Start difference. First operand 7120 states and 21612 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:14,000 INFO L93 Difference]: Finished difference Result 12712 states and 38324 transitions. [2022-02-11 01:41:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:41:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:14,026 INFO L225 Difference]: With dead ends: 12712 [2022-02-11 01:41:14,026 INFO L226 Difference]: Without dead ends: 12672 [2022-02-11 01:41:14,027 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=550, Invalid=5930, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:41:14,027 INFO L934 BasicCegarLoop]: 101 mSDtfsCounter, 369 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:14,027 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2701 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3751 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:41:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12672 states. [2022-02-11 01:41:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12672 to 7126. [2022-02-11 01:41:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0350877192982457) internal successors, (21625), 7125 states have internal predecessors, (21625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21625 transitions. [2022-02-11 01:41:14,207 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21625 transitions. Word has length 48 [2022-02-11 01:41:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:14,207 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21625 transitions. [2022-02-11 01:41:14,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21625 transitions. [2022-02-11 01:41:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:14,217 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:14,217 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:14,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-02-11 01:41:14,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-02-11 01:41:14,419 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash -520605549, now seen corresponding path program 23 times [2022-02-11 01:41:14,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:14,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275682036] [2022-02-11 01:41:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:14,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:14,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275682036] [2022-02-11 01:41:14,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275682036] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:14,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925204342] [2022-02-11 01:41:14,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:41:14,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:14,945 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-11 01:41:14,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:41:14,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:41:14,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:15,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:15,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:15,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:16,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:16,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:16,903 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:16,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:17,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925204342] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:17,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:17,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:41:17,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364682258] [2022-02-11 01:41:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:17,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:41:17,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:41:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:41:17,141 INFO L87 Difference]: Start difference. First operand 7126 states and 21625 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:19,777 INFO L93 Difference]: Finished difference Result 12670 states and 38238 transitions. [2022-02-11 01:41:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:19,802 INFO L225 Difference]: With dead ends: 12670 [2022-02-11 01:41:19,802 INFO L226 Difference]: Without dead ends: 12623 [2022-02-11 01:41:19,802 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1987 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=518, Invalid=5802, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:41:19,803 INFO L934 BasicCegarLoop]: 99 mSDtfsCounter, 352 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:19,803 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2096 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:41:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-11 01:41:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-11 01:41:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.0359702121680483) internal successors, (21607), 7117 states have internal predecessors, (21607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21607 transitions. [2022-02-11 01:41:19,953 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21607 transitions. Word has length 48 [2022-02-11 01:41:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:19,953 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21607 transitions. [2022-02-11 01:41:19,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21607 transitions. [2022-02-11 01:41:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:19,963 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:19,963 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:19,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-11 01:41:20,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-02-11 01:41:20,164 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1406766659, now seen corresponding path program 24 times [2022-02-11 01:41:20,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:20,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824385694] [2022-02-11 01:41:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:20,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:20,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824385694] [2022-02-11 01:41:20,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824385694] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:20,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042167130] [2022-02-11 01:41:20,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:41:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:20,721 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:20,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-11 01:41:20,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:41:20,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:20,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:20,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:21,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:21,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:22,419 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:22,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:22,542 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:22,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:22,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042167130] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:22,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:22,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:22,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776249928] [2022-02-11 01:41:22,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:22,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:22,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2746, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:22,774 INFO L87 Difference]: Start difference. First operand 7118 states and 21607 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:25,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:25,368 INFO L93 Difference]: Finished difference Result 15326 states and 45856 transitions. [2022-02-11 01:41:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:41:25,369 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:25,399 INFO L225 Difference]: With dead ends: 15326 [2022-02-11 01:41:25,399 INFO L226 Difference]: Without dead ends: 15291 [2022-02-11 01:41:25,400 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=553, Invalid=6419, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:41:25,400 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 363 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 3207 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:25,400 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2570 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3207 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:41:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15291 states. [2022-02-11 01:41:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 7126. [2022-02-11 01:41:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0350877192982457) internal successors, (21625), 7125 states have internal predecessors, (21625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21625 transitions. [2022-02-11 01:41:25,567 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21625 transitions. Word has length 48 [2022-02-11 01:41:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:25,567 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21625 transitions. [2022-02-11 01:41:25,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21625 transitions. [2022-02-11 01:41:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:25,576 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:25,576 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:25,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-02-11 01:41:25,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-02-11 01:41:25,777 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:25,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:25,777 INFO L85 PathProgramCache]: Analyzing trace with hash -530584195, now seen corresponding path program 25 times [2022-02-11 01:41:25,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:25,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76554770] [2022-02-11 01:41:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:26,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:26,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76554770] [2022-02-11 01:41:26,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76554770] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:26,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410309348] [2022-02-11 01:41:26,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:41:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:26,319 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:26,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-11 01:41:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:26,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:26,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:26,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:27,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:28,085 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:28,085 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 34 treesize of output 36 [2022-02-11 01:41:28,223 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:28,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:28,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410309348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:28,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:28,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:28,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289639525] [2022-02-11 01:41:28,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:28,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:28,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:28,466 INFO L87 Difference]: Start difference. First operand 7126 states and 21625 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:31,236 INFO L93 Difference]: Finished difference Result 12684 states and 38274 transitions. [2022-02-11 01:41:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:31,259 INFO L225 Difference]: With dead ends: 12684 [2022-02-11 01:41:31,259 INFO L226 Difference]: Without dead ends: 12623 [2022-02-11 01:41:31,259 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=546, Invalid=6096, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:41:31,259 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 376 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 3549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:31,260 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2658 Invalid, 3549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:41:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12623 states. [2022-02-11 01:41:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12623 to 7118. [2022-02-11 01:41:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 7117 states have (on average 3.0358297035267667) internal successors, (21606), 7117 states have internal predecessors, (21606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 21606 transitions. [2022-02-11 01:41:31,394 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 21606 transitions. Word has length 48 [2022-02-11 01:41:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:31,394 INFO L470 AbstractCegarLoop]: Abstraction has 7118 states and 21606 transitions. [2022-02-11 01:41:31,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 21606 transitions. [2022-02-11 01:41:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:31,404 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:31,404 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:31,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-02-11 01:41:31,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:31,604 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash 743387921, now seen corresponding path program 26 times [2022-02-11 01:41:31,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:31,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943301124] [2022-02-11 01:41:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:32,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:32,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943301124] [2022-02-11 01:41:32,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943301124] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:32,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957738167] [2022-02-11 01:41:32,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:41:32,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:32,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:32,138 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:32,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-11 01:41:32,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:41:32,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:32,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:32,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:32,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:33,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:33,968 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:33,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:34,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:34,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:34,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957738167] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:34,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:34,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:34,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941725102] [2022-02-11 01:41:34,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:34,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:34,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:34,377 INFO L87 Difference]: Start difference. First operand 7118 states and 21606 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:37,059 INFO L93 Difference]: Finished difference Result 12769 states and 38446 transitions. [2022-02-11 01:41:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 01:41:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:37,083 INFO L225 Difference]: With dead ends: 12769 [2022-02-11 01:41:37,084 INFO L226 Difference]: Without dead ends: 12676 [2022-02-11 01:41:37,084 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=581, Invalid=6559, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:41:37,084 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 456 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:37,084 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 2191 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2760 Invalid, 0 Unknown, 115 Unchecked, 1.0s Time] [2022-02-11 01:41:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12676 states. [2022-02-11 01:41:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12676 to 7130. [2022-02-11 01:41:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.0343666713424042) internal successors, (21632), 7129 states have internal predecessors, (21632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21632 transitions. [2022-02-11 01:41:37,222 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21632 transitions. Word has length 48 [2022-02-11 01:41:37,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:37,223 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21632 transitions. [2022-02-11 01:41:37,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21632 transitions. [2022-02-11 01:41:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:37,232 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:37,232 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:37,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-11 01:41:37,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:37,434 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -923010665, now seen corresponding path program 27 times [2022-02-11 01:41:37,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:37,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548954254] [2022-02-11 01:41:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:37,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:37,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548954254] [2022-02-11 01:41:37,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548954254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:37,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312697300] [2022-02-11 01:41:37,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:41:37,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:37,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:37,981 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:37,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-11 01:41:38,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:41:38,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:38,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:41:38,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:38,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:38,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:38,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:39,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:39,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:39,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:39,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:40,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312697300] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:40,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:40,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:40,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873242297] [2022-02-11 01:41:40,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:40,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:40,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:40,080 INFO L87 Difference]: Start difference. First operand 7130 states and 21632 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:42,607 INFO L93 Difference]: Finished difference Result 15279 states and 45753 transitions. [2022-02-11 01:41:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:42,608 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:42,640 INFO L225 Difference]: With dead ends: 15279 [2022-02-11 01:41:42,641 INFO L226 Difference]: Without dead ends: 15226 [2022-02-11 01:41:42,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=506, Invalid=5974, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:41:42,641 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 327 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:42,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2633 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:41:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15226 states. [2022-02-11 01:41:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15226 to 7116. [2022-02-11 01:41:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7116 states, 7115 states have (on average 3.0359803232607168) internal successors, (21601), 7115 states have internal predecessors, (21601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 21601 transitions. [2022-02-11 01:41:42,838 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 21601 transitions. Word has length 48 [2022-02-11 01:41:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:42,838 INFO L470 AbstractCegarLoop]: Abstraction has 7116 states and 21601 transitions. [2022-02-11 01:41:42,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 21601 transitions. [2022-02-11 01:41:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:42,848 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:42,848 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:42,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-11 01:41:43,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-02-11 01:41:43,048 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1950075915, now seen corresponding path program 28 times [2022-02-11 01:41:43,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:43,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998049432] [2022-02-11 01:41:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:43,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:43,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998049432] [2022-02-11 01:41:43,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998049432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:43,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270085763] [2022-02-11 01:41:43,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:41:43,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:43,591 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:43,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-11 01:41:43,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:41:43,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:43,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:44,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:44,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:45,326 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:45,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:45,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:45,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:45,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270085763] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:45,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:45,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:45,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417135128] [2022-02-11 01:41:45,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:45,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:45,687 INFO L87 Difference]: Start difference. First operand 7116 states and 21601 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:48,234 INFO L93 Difference]: Finished difference Result 15307 states and 45808 transitions. [2022-02-11 01:41:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:41:48,235 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:48,263 INFO L225 Difference]: With dead ends: 15307 [2022-02-11 01:41:48,263 INFO L226 Difference]: Without dead ends: 15272 [2022-02-11 01:41:48,264 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=514, Invalid=6128, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:41:48,264 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 365 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:48,264 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2582 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:41:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-02-11 01:41:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 7120. [2022-02-11 01:41:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.035257760921478) internal successors, (21608), 7119 states have internal predecessors, (21608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21608 transitions. [2022-02-11 01:41:48,425 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21608 transitions. Word has length 48 [2022-02-11 01:41:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:48,425 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21608 transitions. [2022-02-11 01:41:48,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21608 transitions. [2022-02-11 01:41:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:48,434 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:48,434 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:48,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-11 01:41:48,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:48,635 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1468708917, now seen corresponding path program 29 times [2022-02-11 01:41:48,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:48,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605792405] [2022-02-11 01:41:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:49,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:49,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605792405] [2022-02-11 01:41:49,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605792405] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:49,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545415607] [2022-02-11 01:41:49,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:41:49,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:49,155 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:49,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-11 01:41:49,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:41:49,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:49,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:41:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:49,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:49,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:50,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:50,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:50,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:51,115 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:51,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:51,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545415607] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:51,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:51,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:51,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99752033] [2022-02-11 01:41:51,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:51,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:51,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2749, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:51,354 INFO L87 Difference]: Start difference. First operand 7120 states and 21608 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:41:54,292 INFO L93 Difference]: Finished difference Result 12665 states and 38226 transitions. [2022-02-11 01:41:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:41:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:41:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:41:54,318 INFO L225 Difference]: With dead ends: 12665 [2022-02-11 01:41:54,318 INFO L226 Difference]: Without dead ends: 12613 [2022-02-11 01:41:54,318 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1985 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=546, Invalid=6096, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:41:54,318 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 401 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:41:54,319 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2835 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:41:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12613 states. [2022-02-11 01:41:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12613 to 7108. [2022-02-11 01:41:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7107 states have (on average 3.0372871816518927) internal successors, (21586), 7107 states have internal predecessors, (21586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 21586 transitions. [2022-02-11 01:41:54,471 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 21586 transitions. Word has length 48 [2022-02-11 01:41:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:41:54,471 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 21586 transitions. [2022-02-11 01:41:54,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:41:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 21586 transitions. [2022-02-11 01:41:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:41:54,480 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:41:54,480 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:41:54,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-11 01:41:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:54,681 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:41:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:41:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1340281267, now seen corresponding path program 30 times [2022-02-11 01:41:54,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:41:54,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550303700] [2022-02-11 01:41:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:41:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:41:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:41:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:55,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:41:55,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550303700] [2022-02-11 01:41:55,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550303700] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:41:55,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104569736] [2022-02-11 01:41:55,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:41:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:41:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:41:55,225 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:41:55,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-11 01:41:55,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:41:55,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:41:55,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:41:55,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:41:55,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:41:55,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:41:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:56,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:41:56,955 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:56,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:41:57,089 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:41:57,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:41:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:41:57,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104569736] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:41:57,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:41:57,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:41:57,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831181203] [2022-02-11 01:41:57,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:41:57,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:41:57,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:41:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:41:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2750, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:41:57,340 INFO L87 Difference]: Start difference. First operand 7108 states and 21586 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:00,218 INFO L93 Difference]: Finished difference Result 12700 states and 38298 transitions. [2022-02-11 01:42:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:42:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:00,240 INFO L225 Difference]: With dead ends: 12700 [2022-02-11 01:42:00,240 INFO L226 Difference]: Without dead ends: 12660 [2022-02-11 01:42:00,241 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=599, Invalid=6541, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:42:00,241 INFO L934 BasicCegarLoop]: 103 mSDtfsCounter, 412 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:00,241 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2615 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:42:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12660 states. [2022-02-11 01:42:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12660 to 7114. [2022-02-11 01:42:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7114 states, 7113 states have (on average 3.0365527906649796) internal successors, (21599), 7113 states have internal predecessors, (21599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 21599 transitions. [2022-02-11 01:42:00,367 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 21599 transitions. Word has length 48 [2022-02-11 01:42:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:00,367 INFO L470 AbstractCegarLoop]: Abstraction has 7114 states and 21599 transitions. [2022-02-11 01:42:00,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 21599 transitions. [2022-02-11 01:42:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:00,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:00,375 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:00,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-11 01:42:00,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-02-11 01:42:00,576 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1288287443, now seen corresponding path program 31 times [2022-02-11 01:42:00,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:00,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542490191] [2022-02-11 01:42:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:01,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:01,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542490191] [2022-02-11 01:42:01,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542490191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:01,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498743139] [2022-02-11 01:42:01,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:42:01,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:01,116 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:01,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-11 01:42:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:01,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:01,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:01,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:02,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:02,978 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:02,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:03,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:03,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:03,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498743139] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:03,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:03,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:42:03,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553782468] [2022-02-11 01:42:03,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:03,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:42:03,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:42:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2745, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:42:03,353 INFO L87 Difference]: Start difference. First operand 7114 states and 21599 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:05,872 INFO L93 Difference]: Finished difference Result 15263 states and 45720 transitions. [2022-02-11 01:42:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:42:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:05,901 INFO L225 Difference]: With dead ends: 15263 [2022-02-11 01:42:05,902 INFO L226 Difference]: Without dead ends: 15175 [2022-02-11 01:42:05,902 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 52 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=506, Invalid=5974, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 01:42:05,902 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 324 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:05,902 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2470 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:42:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15175 states. [2022-02-11 01:42:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15175 to 7065. [2022-02-11 01:42:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7065 states, 7064 states have (on average 3.042893544733862) internal successors, (21495), 7064 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7065 states to 7065 states and 21495 transitions. [2022-02-11 01:42:06,088 INFO L78 Accepts]: Start accepts. Automaton has 7065 states and 21495 transitions. Word has length 48 [2022-02-11 01:42:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:06,088 INFO L470 AbstractCegarLoop]: Abstraction has 7065 states and 21495 transitions. [2022-02-11 01:42:06,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 54 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7065 states and 21495 transitions. [2022-02-11 01:42:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:06,097 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:06,097 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:06,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-11 01:42:06,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-02-11 01:42:06,298 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash -651900585, now seen corresponding path program 32 times [2022-02-11 01:42:06,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:06,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729997489] [2022-02-11 01:42:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:06,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:06,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729997489] [2022-02-11 01:42:06,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729997489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:06,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769710190] [2022-02-11 01:42:06,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:42:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:06,819 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:06,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-11 01:42:06,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:42:06,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:06,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:06,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:07,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:07,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:07,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:08,541 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:08,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:08,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:08,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:08,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769710190] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:08,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:08,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:42:08,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675608583] [2022-02-11 01:42:08,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:08,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:42:08,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:42:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:42:08,904 INFO L87 Difference]: Start difference. First operand 7065 states and 21495 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:12,122 INFO L93 Difference]: Finished difference Result 16603 states and 49685 transitions. [2022-02-11 01:42:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:42:12,122 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:12,152 INFO L225 Difference]: With dead ends: 16603 [2022-02-11 01:42:12,152 INFO L226 Difference]: Without dead ends: 16446 [2022-02-11 01:42:12,153 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=648, Invalid=7184, Unknown=0, NotChecked=0, Total=7832 [2022-02-11 01:42:12,153 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 471 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:12,153 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 2556 Invalid, 3766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:42:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16446 states. [2022-02-11 01:42:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16446 to 7131. [2022-02-11 01:42:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7131 states, 7130 states have (on average 3.038849929873773) internal successors, (21667), 7130 states have internal predecessors, (21667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 21667 transitions. [2022-02-11 01:42:12,325 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 21667 transitions. Word has length 48 [2022-02-11 01:42:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 7131 states and 21667 transitions. [2022-02-11 01:42:12,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 21667 transitions. [2022-02-11 01:42:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:12,334 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:12,334 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:12,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-11 01:42:12,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-02-11 01:42:12,535 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1420632681, now seen corresponding path program 33 times [2022-02-11 01:42:12,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:12,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624375319] [2022-02-11 01:42:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:12,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:13,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:13,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624375319] [2022-02-11 01:42:13,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624375319] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:13,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874385210] [2022-02-11 01:42:13,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:42:13,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:13,062 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:13,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-11 01:42:13,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:42:13,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:13,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:13,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:13,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:13,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:14,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:14,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:14,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-11 01:42:15,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:15,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-02-11 01:42:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:15,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874385210] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:15,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:15,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 59 [2022-02-11 01:42:15,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790590855] [2022-02-11 01:42:15,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-11 01:42:15,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-11 01:42:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3241, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:42:15,321 INFO L87 Difference]: Start difference. First operand 7131 states and 21667 transitions. Second operand has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:19,284 INFO L93 Difference]: Finished difference Result 18578 states and 55764 transitions. [2022-02-11 01:42:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-11 01:42:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:19,318 INFO L225 Difference]: With dead ends: 18578 [2022-02-11 01:42:19,318 INFO L226 Difference]: Without dead ends: 18543 [2022-02-11 01:42:19,318 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3089 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=895, Invalid=9407, Unknown=0, NotChecked=0, Total=10302 [2022-02-11 01:42:19,319 INFO L934 BasicCegarLoop]: 122 mSDtfsCounter, 567 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 4672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:19,320 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2909 Invalid, 4672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 4507 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-11 01:42:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18543 states. [2022-02-11 01:42:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18543 to 7188. [2022-02-11 01:42:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.0333936273827744) internal successors, (21801), 7187 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 21801 transitions. [2022-02-11 01:42:19,514 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 21801 transitions. Word has length 48 [2022-02-11 01:42:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:19,514 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 21801 transitions. [2022-02-11 01:42:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 21801 transitions. [2022-02-11 01:42:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:19,522 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:19,522 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:19,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-02-11 01:42:19,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-02-11 01:42:19,724 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:19,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash -544450217, now seen corresponding path program 34 times [2022-02-11 01:42:19,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:19,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052074729] [2022-02-11 01:42:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:20,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:20,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052074729] [2022-02-11 01:42:20,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052074729] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:20,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234764119] [2022-02-11 01:42:20,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:42:20,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:20,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:20,244 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:20,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-11 01:42:20,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:42:20,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:20,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:20,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:21,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:21,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:21,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:22,017 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:22,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:22,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234764119] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:22,298 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:22,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:42:22,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092999916] [2022-02-11 01:42:22,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:22,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:42:22,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:42:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:42:22,298 INFO L87 Difference]: Start difference. First operand 7188 states and 21801 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:25,688 INFO L93 Difference]: Finished difference Result 13336 states and 40246 transitions. [2022-02-11 01:42:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:42:25,688 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:25,715 INFO L225 Difference]: With dead ends: 13336 [2022-02-11 01:42:25,715 INFO L226 Difference]: Without dead ends: 13292 [2022-02-11 01:42:25,716 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=650, Invalid=6660, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:42:25,716 INFO L934 BasicCegarLoop]: 101 mSDtfsCounter, 389 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:25,716 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2535 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3629 Invalid, 0 Unknown, 70 Unchecked, 1.4s Time] [2022-02-11 01:42:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13292 states. [2022-02-11 01:42:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13292 to 7184. [2022-02-11 01:42:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7183 states have (on average 3.03355144090213) internal successors, (21790), 7183 states have internal predecessors, (21790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 21790 transitions. [2022-02-11 01:42:25,897 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 21790 transitions. Word has length 48 [2022-02-11 01:42:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:25,898 INFO L470 AbstractCegarLoop]: Abstraction has 7184 states and 21790 transitions. [2022-02-11 01:42:25,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 21790 transitions. [2022-02-11 01:42:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:25,909 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:25,909 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:25,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-02-11 01:42:26,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:26,123 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1278917541, now seen corresponding path program 35 times [2022-02-11 01:42:26,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:26,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200955924] [2022-02-11 01:42:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:26,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:26,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200955924] [2022-02-11 01:42:26,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200955924] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:26,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771494175] [2022-02-11 01:42:26,655 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:42:26,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:26,656 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-11 01:42:26,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:42:26,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:26,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:42:26,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:26,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:27,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:27,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:28,423 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:28,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:28,543 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:28,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:28,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771494175] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:28,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:28,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:42:28,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599520140] [2022-02-11 01:42:28,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:28,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:42:28,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:42:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:42:28,778 INFO L87 Difference]: Start difference. First operand 7184 states and 21790 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:33,053 INFO L93 Difference]: Finished difference Result 16547 states and 49418 transitions. [2022-02-11 01:42:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 01:42:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:33,083 INFO L225 Difference]: With dead ends: 16547 [2022-02-11 01:42:33,084 INFO L226 Difference]: Without dead ends: 16442 [2022-02-11 01:42:33,084 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 59 SyntacticMatches, 15 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=731, Invalid=8389, Unknown=0, NotChecked=0, Total=9120 [2022-02-11 01:42:33,084 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 502 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 5152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:33,084 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 3369 Invalid, 5152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 4631 Invalid, 0 Unknown, 409 Unchecked, 1.8s Time] [2022-02-11 01:42:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16442 states. [2022-02-11 01:42:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16442 to 7190. [2022-02-11 01:42:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7190 states, 7189 states have (on average 3.032827931562109) internal successors, (21803), 7189 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7190 states to 7190 states and 21803 transitions. [2022-02-11 01:42:33,262 INFO L78 Accepts]: Start accepts. Automaton has 7190 states and 21803 transitions. Word has length 48 [2022-02-11 01:42:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:33,262 INFO L470 AbstractCegarLoop]: Abstraction has 7190 states and 21803 transitions. [2022-02-11 01:42:33,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7190 states and 21803 transitions. [2022-02-11 01:42:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:33,272 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:33,272 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:33,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-02-11 01:42:33,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:33,483 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1732902295, now seen corresponding path program 36 times [2022-02-11 01:42:33,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:33,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336215838] [2022-02-11 01:42:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:34,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:34,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336215838] [2022-02-11 01:42:34,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336215838] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:34,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451249887] [2022-02-11 01:42:34,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:42:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:34,020 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:34,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-11 01:42:34,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:42:34,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:34,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:42:34,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:34,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:34,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:42:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:34,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:35,675 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:35,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:35,811 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:35,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:36,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451249887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:36,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:36,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:42:36,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956642120] [2022-02-11 01:42:36,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:36,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:42:36,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:42:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:42:36,058 INFO L87 Difference]: Start difference. First operand 7190 states and 21803 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:39,775 INFO L93 Difference]: Finished difference Result 16581 states and 49591 transitions. [2022-02-11 01:42:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:42:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:39,807 INFO L225 Difference]: With dead ends: 16581 [2022-02-11 01:42:39,807 INFO L226 Difference]: Without dead ends: 16483 [2022-02-11 01:42:39,808 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=676, Invalid=7514, Unknown=0, NotChecked=0, Total=8190 [2022-02-11 01:42:39,808 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 395 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 4350 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 4446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:39,808 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 3073 Invalid, 4446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 4350 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:42:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16483 states. [2022-02-11 01:42:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16483 to 7170. [2022-02-11 01:42:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7169 states have (on average 3.0352908355419164) internal successors, (21760), 7169 states have internal predecessors, (21760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 21760 transitions. [2022-02-11 01:42:39,980 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 21760 transitions. Word has length 48 [2022-02-11 01:42:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:39,980 INFO L470 AbstractCegarLoop]: Abstraction has 7170 states and 21760 transitions. [2022-02-11 01:42:39,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 21760 transitions. [2022-02-11 01:42:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:40,020 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:40,020 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:40,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-02-11 01:42:40,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-02-11 01:42:40,223 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -837756267, now seen corresponding path program 37 times [2022-02-11 01:42:40,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:40,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231497536] [2022-02-11 01:42:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:40,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:40,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231497536] [2022-02-11 01:42:40,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231497536] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:40,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480641400] [2022-02-11 01:42:40,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:42:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:40,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:40,736 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:40,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-11 01:42:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:40,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:40,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:40,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:41,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:41,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:42,397 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:42,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:42,531 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:42,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:42,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480641400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:42,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:42,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:42:42,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221417709] [2022-02-11 01:42:42,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:42,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:42:42,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:42:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:42:42,754 INFO L87 Difference]: Start difference. First operand 7170 states and 21760 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:46,665 INFO L93 Difference]: Finished difference Result 13362 states and 39826 transitions. [2022-02-11 01:42:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 01:42:46,665 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:46,691 INFO L225 Difference]: With dead ends: 13362 [2022-02-11 01:42:46,692 INFO L226 Difference]: Without dead ends: 13141 [2022-02-11 01:42:46,692 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=753, Invalid=8559, Unknown=0, NotChecked=0, Total=9312 [2022-02-11 01:42:46,693 INFO L934 BasicCegarLoop]: 119 mSDtfsCounter, 489 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 4691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:46,693 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2928 Invalid, 4691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4263 Invalid, 0 Unknown, 342 Unchecked, 1.6s Time] [2022-02-11 01:42:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13141 states. [2022-02-11 01:42:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13141 to 7230. [2022-02-11 01:42:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7229 states have (on average 3.028911329367824) internal successors, (21896), 7229 states have internal predecessors, (21896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 21896 transitions. [2022-02-11 01:42:46,841 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 21896 transitions. Word has length 48 [2022-02-11 01:42:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:46,841 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 21896 transitions. [2022-02-11 01:42:46,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 21896 transitions. [2022-02-11 01:42:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:46,851 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:46,851 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:46,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-02-11 01:42:47,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-02-11 01:42:47,051 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -873389315, now seen corresponding path program 38 times [2022-02-11 01:42:47,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:47,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79954274] [2022-02-11 01:42:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:47,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:47,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79954274] [2022-02-11 01:42:47,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79954274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:47,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252040343] [2022-02-11 01:42:47,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:42:47,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:47,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:47,584 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:47,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-11 01:42:47,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:42:47,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:47,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:42:47,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:47,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:48,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:48,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:49,339 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:49,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:49,466 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:49,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:49,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252040343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:49,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:49,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:42:49,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34401110] [2022-02-11 01:42:49,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:49,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:42:49,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:42:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:42:49,680 INFO L87 Difference]: Start difference. First operand 7230 states and 21896 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:53,083 INFO L93 Difference]: Finished difference Result 13495 states and 40602 transitions. [2022-02-11 01:42:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:42:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:53,111 INFO L225 Difference]: With dead ends: 13495 [2022-02-11 01:42:53,111 INFO L226 Difference]: Without dead ends: 13455 [2022-02-11 01:42:53,112 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2245 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=657, Invalid=6825, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:42:53,112 INFO L934 BasicCegarLoop]: 100 mSDtfsCounter, 428 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:53,112 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2354 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3514 Invalid, 0 Unknown, 192 Unchecked, 1.3s Time] [2022-02-11 01:42:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13455 states. [2022-02-11 01:42:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13455 to 7308. [2022-02-11 01:42:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 7307 states have (on average 3.0213493909949363) internal successors, (22077), 7307 states have internal predecessors, (22077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 22077 transitions. [2022-02-11 01:42:53,278 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 22077 transitions. Word has length 48 [2022-02-11 01:42:53,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:53,278 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 22077 transitions. [2022-02-11 01:42:53,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 22077 transitions. [2022-02-11 01:42:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:53,288 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:53,288 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:53,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-02-11 01:42:53,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-02-11 01:42:53,488 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1102148159, now seen corresponding path program 39 times [2022-02-11 01:42:53,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:53,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531367026] [2022-02-11 01:42:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:42:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:54,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:42:54,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531367026] [2022-02-11 01:42:54,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531367026] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:42:54,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657976681] [2022-02-11 01:42:54,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:42:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:42:54,038 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:42:54,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-11 01:42:54,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:42:54,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:42:54,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-11 01:42:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:42:54,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:54,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:42:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:55,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:42:55,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:55,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:42:55,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:42:55,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:42:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:42:56,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657976681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:42:56,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:42:56,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:42:56,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6306420] [2022-02-11 01:42:56,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:42:56,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:42:56,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:42:56,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:42:56,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:42:56,157 INFO L87 Difference]: Start difference. First operand 7308 states and 22077 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:42:59,508 INFO L93 Difference]: Finished difference Result 16692 states and 49894 transitions. [2022-02-11 01:42:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:42:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:42:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:42:59,537 INFO L225 Difference]: With dead ends: 16692 [2022-02-11 01:42:59,537 INFO L226 Difference]: Without dead ends: 16647 [2022-02-11 01:42:59,538 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=651, Invalid=7005, Unknown=0, NotChecked=0, Total=7656 [2022-02-11 01:42:59,538 INFO L934 BasicCegarLoop]: 101 mSDtfsCounter, 342 mSDsluCounter, 3758 mSDsCounter, 0 mSdLazyCounter, 4341 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 4341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:42:59,538 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2707 Invalid, 4440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 4341 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:42:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2022-02-11 01:42:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 7302. [2022-02-11 01:42:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7302 states, 7301 states have (on average 3.021229968497466) internal successors, (22058), 7301 states have internal predecessors, (22058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7302 states to 7302 states and 22058 transitions. [2022-02-11 01:42:59,700 INFO L78 Accepts]: Start accepts. Automaton has 7302 states and 22058 transitions. Word has length 48 [2022-02-11 01:42:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:42:59,701 INFO L470 AbstractCegarLoop]: Abstraction has 7302 states and 22058 transitions. [2022-02-11 01:42:59,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:42:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7302 states and 22058 transitions. [2022-02-11 01:42:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:42:59,709 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:42:59,709 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:42:59,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-11 01:42:59,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:42:59,910 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:42:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:42:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2048879959, now seen corresponding path program 40 times [2022-02-11 01:42:59,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:42:59,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282525074] [2022-02-11 01:42:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:42:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:42:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:00,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:00,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282525074] [2022-02-11 01:43:00,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282525074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:00,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329488433] [2022-02-11 01:43:00,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:43:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:00,454 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:00,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-11 01:43:00,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:43:00,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:00,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:00,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:00,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:01,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:02,138 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:02,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:02,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:02,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:02,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329488433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:02,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:02,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:43:02,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623319638] [2022-02-11 01:43:02,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:02,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:43:02,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:02,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:43:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:43:02,490 INFO L87 Difference]: Start difference. First operand 7302 states and 22058 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:05,760 INFO L93 Difference]: Finished difference Result 15766 states and 46905 transitions. [2022-02-11 01:43:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-11 01:43:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:05,787 INFO L225 Difference]: With dead ends: 15766 [2022-02-11 01:43:05,787 INFO L226 Difference]: Without dead ends: 15702 [2022-02-11 01:43:05,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:43:05,788 INFO L934 BasicCegarLoop]: 125 mSDtfsCounter, 431 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:05,788 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 3018 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 4141 Invalid, 0 Unknown, 222 Unchecked, 1.5s Time] [2022-02-11 01:43:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15702 states. [2022-02-11 01:43:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15702 to 7334. [2022-02-11 01:43:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7334 states, 7333 states have (on average 3.0178644483840174) internal successors, (22130), 7333 states have internal predecessors, (22130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7334 states to 7334 states and 22130 transitions. [2022-02-11 01:43:05,946 INFO L78 Accepts]: Start accepts. Automaton has 7334 states and 22130 transitions. Word has length 48 [2022-02-11 01:43:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 7334 states and 22130 transitions. [2022-02-11 01:43:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7334 states and 22130 transitions. [2022-02-11 01:43:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:05,955 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:05,956 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:05,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:06,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:06,156 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1901105241, now seen corresponding path program 41 times [2022-02-11 01:43:06,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:06,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255617111] [2022-02-11 01:43:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:06,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:06,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255617111] [2022-02-11 01:43:06,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255617111] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:06,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846988858] [2022-02-11 01:43:06,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:43:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:06,690 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:06,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-11 01:43:06,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:43:06,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:06,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:43:06,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:06,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:07,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:07,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:08,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:08,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-11 01:43:08,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:08,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-11 01:43:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:08,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846988858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:08,992 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:08,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 58 [2022-02-11 01:43:08,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748246496] [2022-02-11 01:43:08,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:08,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-11 01:43:08,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-11 01:43:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3125, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 01:43:08,993 INFO L87 Difference]: Start difference. First operand 7334 states and 22130 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:13,067 INFO L93 Difference]: Finished difference Result 19273 states and 57399 transitions. [2022-02-11 01:43:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-11 01:43:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:13,098 INFO L225 Difference]: With dead ends: 19273 [2022-02-11 01:43:13,099 INFO L226 Difference]: Without dead ends: 19191 [2022-02-11 01:43:13,099 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=934, Invalid=9572, Unknown=0, NotChecked=0, Total=10506 [2022-02-11 01:43:13,099 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 547 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 4411 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:13,099 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 3119 Invalid, 4833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4411 Invalid, 0 Unknown, 263 Unchecked, 1.7s Time] [2022-02-11 01:43:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2022-02-11 01:43:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 7316. [2022-02-11 01:43:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 7315 states have (on average 3.019412166780588) internal successors, (22087), 7315 states have internal predecessors, (22087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 22087 transitions. [2022-02-11 01:43:13,270 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 22087 transitions. Word has length 48 [2022-02-11 01:43:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:13,270 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 22087 transitions. [2022-02-11 01:43:13,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 22087 transitions. [2022-02-11 01:43:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:13,280 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:13,280 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:13,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-02-11 01:43:13,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-02-11 01:43:13,495 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2091649819, now seen corresponding path program 42 times [2022-02-11 01:43:13,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:13,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939249457] [2022-02-11 01:43:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:14,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:14,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939249457] [2022-02-11 01:43:14,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939249457] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:14,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332464521] [2022-02-11 01:43:14,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:43:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:14,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:14,071 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:14,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-11 01:43:14,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:43:14,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:43:14,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:14,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:14,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:15,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:15,816 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:15,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:15,942 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:15,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:16,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332464521] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:16,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:16,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:43:16,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585378814] [2022-02-11 01:43:16,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:16,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:43:16,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:43:16,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:43:16,180 INFO L87 Difference]: Start difference. First operand 7316 states and 22087 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:19,895 INFO L93 Difference]: Finished difference Result 16851 states and 50189 transitions. [2022-02-11 01:43:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:43:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:19,928 INFO L225 Difference]: With dead ends: 16851 [2022-02-11 01:43:19,928 INFO L226 Difference]: Without dead ends: 16629 [2022-02-11 01:43:19,928 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=684, Invalid=7688, Unknown=0, NotChecked=0, Total=8372 [2022-02-11 01:43:19,929 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 443 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 4295 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:19,929 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 3056 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4295 Invalid, 0 Unknown, 354 Unchecked, 1.6s Time] [2022-02-11 01:43:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16629 states. [2022-02-11 01:43:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16629 to 7266. [2022-02-11 01:43:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 3.021885753613214) internal successors, (21954), 7265 states have internal predecessors, (21954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 21954 transitions. [2022-02-11 01:43:20,105 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 21954 transitions. Word has length 48 [2022-02-11 01:43:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 21954 transitions. [2022-02-11 01:43:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 21954 transitions. [2022-02-11 01:43:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:20,114 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:20,114 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:20,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:20,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-02-11 01:43:20,315 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -307920015, now seen corresponding path program 43 times [2022-02-11 01:43:20,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:20,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441785973] [2022-02-11 01:43:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:20,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:20,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441785973] [2022-02-11 01:43:20,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441785973] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:20,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333008689] [2022-02-11 01:43:20,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:43:20,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:20,894 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:20,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-11 01:43:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:20,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:20,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:21,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:21,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:21,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:22,549 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:22,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:22,678 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:22,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:22,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333008689] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:22,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:22,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:43:22,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823084771] [2022-02-11 01:43:22,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:22,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:43:22,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:22,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:43:22,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:43:22,924 INFO L87 Difference]: Start difference. First operand 7266 states and 21954 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:26,064 INFO L93 Difference]: Finished difference Result 13429 states and 40437 transitions. [2022-02-11 01:43:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:43:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:26,090 INFO L225 Difference]: With dead ends: 13429 [2022-02-11 01:43:26,090 INFO L226 Difference]: Without dead ends: 13394 [2022-02-11 01:43:26,091 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=637, Invalid=6503, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:43:26,091 INFO L934 BasicCegarLoop]: 96 mSDtfsCounter, 428 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:26,091 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2110 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:43:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13394 states. [2022-02-11 01:43:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13394 to 7274. [2022-02-11 01:43:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7273 states have (on average 3.0211742059672764) internal successors, (21973), 7273 states have internal predecessors, (21973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 21973 transitions. [2022-02-11 01:43:26,227 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 21973 transitions. Word has length 48 [2022-02-11 01:43:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:26,227 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 21973 transitions. [2022-02-11 01:43:26,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 21973 transitions. [2022-02-11 01:43:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:26,235 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:26,235 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:26,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-02-11 01:43:26,436 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash 568262449, now seen corresponding path program 44 times [2022-02-11 01:43:26,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:26,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647205434] [2022-02-11 01:43:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:26,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:26,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647205434] [2022-02-11 01:43:26,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647205434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:26,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24098792] [2022-02-11 01:43:26,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:43:26,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:26,970 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:26,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-11 01:43:26,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:43:26,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:26,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:26,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:27,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:27,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:27,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:28,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:28,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:28,808 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:28,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:29,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24098792] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:29,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:29,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:43:29,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370088682] [2022-02-11 01:43:29,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:29,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:43:29,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:43:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:43:29,058 INFO L87 Difference]: Start difference. First operand 7274 states and 21973 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:32,597 INFO L93 Difference]: Finished difference Result 13463 states and 40498 transitions. [2022-02-11 01:43:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:43:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:32,624 INFO L225 Difference]: With dead ends: 13463 [2022-02-11 01:43:32,625 INFO L226 Difference]: Without dead ends: 13419 [2022-02-11 01:43:32,625 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=672, Invalid=6638, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:43:32,625 INFO L934 BasicCegarLoop]: 97 mSDtfsCounter, 436 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:32,625 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2595 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:43:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13419 states. [2022-02-11 01:43:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13419 to 7270. [2022-02-11 01:43:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.021736139771633) internal successors, (21965), 7269 states have internal predecessors, (21965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21965 transitions. [2022-02-11 01:43:32,794 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21965 transitions. Word has length 48 [2022-02-11 01:43:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:32,794 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21965 transitions. [2022-02-11 01:43:32,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21965 transitions. [2022-02-11 01:43:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:32,803 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:32,803 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:32,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-11 01:43:33,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-02-11 01:43:33,003 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1534873679, now seen corresponding path program 45 times [2022-02-11 01:43:33,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:33,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721961525] [2022-02-11 01:43:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:33,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:33,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721961525] [2022-02-11 01:43:33,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721961525] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:33,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463248107] [2022-02-11 01:43:33,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:43:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:33,512 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:33,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-11 01:43:33,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:43:33,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:33,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:34,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:34,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:35,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:35,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:35,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:35,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-11 01:43:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:35,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463248107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:35,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:35,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 57 [2022-02-11 01:43:35,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202045156] [2022-02-11 01:43:35,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:35,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 01:43:35,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 01:43:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=3041, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 01:43:35,740 INFO L87 Difference]: Start difference. First operand 7270 states and 21965 transitions. Second operand has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:40,483 INFO L93 Difference]: Finished difference Result 17850 states and 52759 transitions. [2022-02-11 01:43:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:43:40,484 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:40,518 INFO L225 Difference]: With dead ends: 17850 [2022-02-11 01:43:40,519 INFO L226 Difference]: Without dead ends: 17815 [2022-02-11 01:43:40,519 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2819 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=755, Invalid=8947, Unknown=0, NotChecked=0, Total=9702 [2022-02-11 01:43:40,519 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 376 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 6106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:40,519 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2892 Invalid, 6106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 6008 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-11 01:43:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17815 states. [2022-02-11 01:43:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17815 to 7274. [2022-02-11 01:43:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7273 states have (on average 3.0211742059672764) internal successors, (21973), 7273 states have internal predecessors, (21973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 21973 transitions. [2022-02-11 01:43:40,712 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 21973 transitions. Word has length 48 [2022-02-11 01:43:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:40,712 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 21973 transitions. [2022-02-11 01:43:40,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 21973 transitions. [2022-02-11 01:43:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:40,722 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:40,722 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:40,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-11 01:43:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-02-11 01:43:40,923 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash 927176213, now seen corresponding path program 46 times [2022-02-11 01:43:40,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:40,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959006459] [2022-02-11 01:43:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:41,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:41,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959006459] [2022-02-11 01:43:41,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959006459] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:41,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761622596] [2022-02-11 01:43:41,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:43:41,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:41,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:41,460 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:41,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-11 01:43:41,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:43:41,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:41,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:41,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:41,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:42,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:43,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:43,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:43,334 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:43,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:43,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761622596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:43,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:43,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:43:43,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446877447] [2022-02-11 01:43:43,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:43,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:43:43,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:43:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:43:43,567 INFO L87 Difference]: Start difference. First operand 7274 states and 21973 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:46,471 INFO L93 Difference]: Finished difference Result 16658 states and 49790 transitions. [2022-02-11 01:43:46,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:43:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:46,502 INFO L225 Difference]: With dead ends: 16658 [2022-02-11 01:43:46,502 INFO L226 Difference]: Without dead ends: 16615 [2022-02-11 01:43:46,502 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=593, Invalid=6379, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:43:46,503 INFO L934 BasicCegarLoop]: 96 mSDtfsCounter, 374 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:46,503 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 2075 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:43:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16615 states. [2022-02-11 01:43:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16615 to 7270. [2022-02-11 01:43:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0214609987618655) internal successors, (21963), 7269 states have internal predecessors, (21963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21963 transitions. [2022-02-11 01:43:46,656 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21963 transitions. Word has length 48 [2022-02-11 01:43:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:46,656 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21963 transitions. [2022-02-11 01:43:46,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21963 transitions. [2022-02-11 01:43:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:46,664 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:46,664 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:46,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:46,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-02-11 01:43:46,865 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash 71228565, now seen corresponding path program 47 times [2022-02-11 01:43:46,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:46,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788796486] [2022-02-11 01:43:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:47,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:47,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788796486] [2022-02-11 01:43:47,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788796486] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:47,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793352439] [2022-02-11 01:43:47,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:43:47,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:47,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:47,414 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:47,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-11 01:43:47,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:43:47,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:47,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:43:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:47,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:47,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:48,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:49,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:49,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:49,215 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:49,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:49,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793352439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:49,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:49,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:43:49,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622705751] [2022-02-11 01:43:49,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:43:49,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:43:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:43:49,435 INFO L87 Difference]: Start difference. First operand 7270 states and 21963 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:52,827 INFO L93 Difference]: Finished difference Result 13462 states and 40500 transitions. [2022-02-11 01:43:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:43:52,827 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:52,852 INFO L225 Difference]: With dead ends: 13462 [2022-02-11 01:43:52,852 INFO L226 Difference]: Without dead ends: 13422 [2022-02-11 01:43:52,853 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 57 SyntacticMatches, 22 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=656, Invalid=6316, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:43:52,853 INFO L934 BasicCegarLoop]: 96 mSDtfsCounter, 424 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:52,853 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2248 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3310 Invalid, 0 Unknown, 111 Unchecked, 1.2s Time] [2022-02-11 01:43:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13422 states. [2022-02-11 01:43:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13422 to 7276. [2022-02-11 01:43:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 7275 states have (on average 3.0207560137457046) internal successors, (21976), 7275 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 21976 transitions. [2022-02-11 01:43:53,022 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 21976 transitions. Word has length 48 [2022-02-11 01:43:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:53,022 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 21976 transitions. [2022-02-11 01:43:53,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 21976 transitions. [2022-02-11 01:43:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:53,030 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:53,030 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:53,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:53,231 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1595170021, now seen corresponding path program 48 times [2022-02-11 01:43:53,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:53,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116017412] [2022-02-11 01:43:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:53,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:53,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:53,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116017412] [2022-02-11 01:43:53,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116017412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:53,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457605535] [2022-02-11 01:43:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:43:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:53,748 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:53,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-11 01:43:53,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:43:53,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:43:53,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:53,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:43:53,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:43:54,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:43:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:54,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:43:55,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:55,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:43:55,672 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:43:55,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:43:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:55,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457605535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:43:55,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:43:55,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:43:55,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413720020] [2022-02-11 01:43:55,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:43:55,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:43:55,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:43:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:43:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:43:55,945 INFO L87 Difference]: Start difference. First operand 7276 states and 21976 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:43:59,019 INFO L93 Difference]: Finished difference Result 13423 states and 40416 transitions. [2022-02-11 01:43:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:43:59,019 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:43:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:43:59,046 INFO L225 Difference]: With dead ends: 13423 [2022-02-11 01:43:59,046 INFO L226 Difference]: Without dead ends: 13376 [2022-02-11 01:43:59,047 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=637, Invalid=6503, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:43:59,047 INFO L934 BasicCegarLoop]: 93 mSDtfsCounter, 414 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 3221 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:43:59,047 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1966 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3221 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:43:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2022-02-11 01:43:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 7268. [2022-02-11 01:43:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 3.0216045135544243) internal successors, (21958), 7267 states have internal predecessors, (21958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 21958 transitions. [2022-02-11 01:43:59,207 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 21958 transitions. Word has length 48 [2022-02-11 01:43:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:43:59,207 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 21958 transitions. [2022-02-11 01:43:59,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:43:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 21958 transitions. [2022-02-11 01:43:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:43:59,217 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:43:59,217 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:43:59,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-02-11 01:43:59,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-02-11 01:43:59,417 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:43:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:43:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1813636165, now seen corresponding path program 49 times [2022-02-11 01:43:59,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:43:59,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109512280] [2022-02-11 01:43:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:43:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:43:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:43:59,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:43:59,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109512280] [2022-02-11 01:43:59,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109512280] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:43:59,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283304738] [2022-02-11 01:43:59,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:43:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:43:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:43:59,939 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:43:59,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-11 01:43:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:43:59,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:43:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:00,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:00,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:00,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:01,660 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:01,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:01,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:01,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:02,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283304738] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:02,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:02,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:02,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162430305] [2022-02-11 01:44:02,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:02,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:02,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:02,068 INFO L87 Difference]: Start difference. First operand 7268 states and 21958 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:05,138 INFO L93 Difference]: Finished difference Result 16711 states and 49903 transitions. [2022-02-11 01:44:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:44:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:05,168 INFO L225 Difference]: With dead ends: 16711 [2022-02-11 01:44:05,168 INFO L226 Difference]: Without dead ends: 16676 [2022-02-11 01:44:05,169 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=627, Invalid=6855, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:44:05,169 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 447 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:05,169 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 2425 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:44:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16676 states. [2022-02-11 01:44:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16676 to 7276. [2022-02-11 01:44:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 7275 states have (on average 3.0207560137457046) internal successors, (21976), 7275 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 21976 transitions. [2022-02-11 01:44:05,340 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 21976 transitions. Word has length 48 [2022-02-11 01:44:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:05,340 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 21976 transitions. [2022-02-11 01:44:05,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 21976 transitions. [2022-02-11 01:44:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:05,349 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:05,349 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:05,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-02-11 01:44:05,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:05,549 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1605148667, now seen corresponding path program 50 times [2022-02-11 01:44:05,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:05,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710492324] [2022-02-11 01:44:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:05,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:06,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:06,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710492324] [2022-02-11 01:44:06,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710492324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:06,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382254833] [2022-02-11 01:44:06,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:44:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:06,072 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:06,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-11 01:44:06,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:44:06,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:06,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:06,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:06,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:06,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:07,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:07,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:07,907 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:07,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:08,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382254833] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:08,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:08,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:08,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54336516] [2022-02-11 01:44:08,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:08,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:08,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:08,134 INFO L87 Difference]: Start difference. First operand 7276 states and 21976 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:11,346 INFO L93 Difference]: Finished difference Result 13477 states and 40533 transitions. [2022-02-11 01:44:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:44:11,347 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:11,373 INFO L225 Difference]: With dead ends: 13477 [2022-02-11 01:44:11,373 INFO L226 Difference]: Without dead ends: 13376 [2022-02-11 01:44:11,373 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=686, Invalid=7146, Unknown=0, NotChecked=0, Total=7832 [2022-02-11 01:44:11,373 INFO L934 BasicCegarLoop]: 102 mSDtfsCounter, 458 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:11,373 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2252 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3322 Invalid, 0 Unknown, 64 Unchecked, 1.2s Time] [2022-02-11 01:44:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2022-02-11 01:44:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 7268. [2022-02-11 01:44:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 3.0214669051878356) internal successors, (21957), 7267 states have internal predecessors, (21957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 21957 transitions. [2022-02-11 01:44:11,525 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 21957 transitions. Word has length 48 [2022-02-11 01:44:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:11,525 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 21957 transitions. [2022-02-11 01:44:11,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 21957 transitions. [2022-02-11 01:44:11,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:11,535 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:11,535 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:11,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-02-11 01:44:11,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:11,739 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -331176551, now seen corresponding path program 51 times [2022-02-11 01:44:11,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:11,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827397324] [2022-02-11 01:44:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:12,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:12,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827397324] [2022-02-11 01:44:12,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827397324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:12,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176654173] [2022-02-11 01:44:12,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:44:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:12,272 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:12,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-11 01:44:12,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:44:12,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:12,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:44:12,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:12,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:12,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:13,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:14,191 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:14,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-11 01:44:14,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:14,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-11 01:44:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:14,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176654173] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:14,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:14,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 58 [2022-02-11 01:44:14,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683529002] [2022-02-11 01:44:14,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:14,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-11 01:44:14,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-11 01:44:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 01:44:14,629 INFO L87 Difference]: Start difference. First operand 7268 states and 21957 transitions. Second operand has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:18,780 INFO L93 Difference]: Finished difference Result 16915 states and 50842 transitions. [2022-02-11 01:44:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-11 01:44:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:18,810 INFO L225 Difference]: With dead ends: 16915 [2022-02-11 01:44:18,811 INFO L226 Difference]: Without dead ends: 16836 [2022-02-11 01:44:18,811 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=957, Invalid=9143, Unknown=0, NotChecked=0, Total=10100 [2022-02-11 01:44:18,812 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 648 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 4768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:18,812 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 2795 Invalid, 4768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-11 01:44:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16836 states. [2022-02-11 01:44:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16836 to 7266. [2022-02-11 01:44:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 3.0216104611149346) internal successors, (21952), 7265 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 21952 transitions. [2022-02-11 01:44:18,988 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 21952 transitions. Word has length 48 [2022-02-11 01:44:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 21952 transitions. [2022-02-11 01:44:18,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 21952 transitions. [2022-02-11 01:44:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:18,997 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:18,997 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:19,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-02-11 01:44:19,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2022-02-11 01:44:19,197 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 875511443, now seen corresponding path program 52 times [2022-02-11 01:44:19,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:19,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819935145] [2022-02-11 01:44:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:19,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:19,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819935145] [2022-02-11 01:44:19,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819935145] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:19,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927554027] [2022-02-11 01:44:19,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:44:19,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:19,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:19,703 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:19,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-11 01:44:19,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:44:19,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:19,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:19,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:19,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:20,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:20,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:21,456 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:21,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:21,585 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:21,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:21,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927554027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:21,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:21,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:21,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544427747] [2022-02-11 01:44:21,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:21,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:21,838 INFO L87 Difference]: Start difference. First operand 7266 states and 21952 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:24,993 INFO L93 Difference]: Finished difference Result 16692 states and 49855 transitions. [2022-02-11 01:44:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-11 01:44:24,993 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:25,025 INFO L225 Difference]: With dead ends: 16692 [2022-02-11 01:44:25,025 INFO L226 Difference]: Without dead ends: 16657 [2022-02-11 01:44:25,025 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=627, Invalid=6855, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:44:25,026 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 422 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:25,026 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2457 Invalid, 3538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:44:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16657 states. [2022-02-11 01:44:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16657 to 7270. [2022-02-11 01:44:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 3.0209107167423306) internal successors, (21959), 7269 states have internal predecessors, (21959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21959 transitions. [2022-02-11 01:44:25,202 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21959 transitions. Word has length 48 [2022-02-11 01:44:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:25,202 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21959 transitions. [2022-02-11 01:44:25,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21959 transitions. [2022-02-11 01:44:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:25,211 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:25,211 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:25,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-02-11 01:44:25,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:25,412 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1751693907, now seen corresponding path program 53 times [2022-02-11 01:44:25,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:25,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570262419] [2022-02-11 01:44:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:25,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:25,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570262419] [2022-02-11 01:44:25,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570262419] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:25,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431732842] [2022-02-11 01:44:25,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:44:25,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:25,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:25,941 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:25,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-11 01:44:25,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:44:25,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:25,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:44:25,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:26,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:26,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:26,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:27,688 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:27,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:27,808 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:27,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:28,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431732842] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:28,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:28,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:28,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116008286] [2022-02-11 01:44:28,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:28,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:28,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:28,041 INFO L87 Difference]: Start difference. First operand 7270 states and 21959 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:31,491 INFO L93 Difference]: Finished difference Result 13418 states and 40404 transitions. [2022-02-11 01:44:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:44:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:31,519 INFO L225 Difference]: With dead ends: 13418 [2022-02-11 01:44:31,519 INFO L226 Difference]: Without dead ends: 13366 [2022-02-11 01:44:31,520 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=667, Invalid=6815, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:44:31,520 INFO L934 BasicCegarLoop]: 100 mSDtfsCounter, 414 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:31,520 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 2599 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3878 Invalid, 0 Unknown, 164 Unchecked, 1.4s Time] [2022-02-11 01:44:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13366 states. [2022-02-11 01:44:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13366 to 7258. [2022-02-11 01:44:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7258 states, 7257 states have (on average 3.0228744660327957) internal successors, (21937), 7257 states have internal predecessors, (21937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7258 states to 7258 states and 21937 transitions. [2022-02-11 01:44:31,668 INFO L78 Accepts]: Start accepts. Automaton has 7258 states and 21937 transitions. Word has length 48 [2022-02-11 01:44:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:31,668 INFO L470 AbstractCegarLoop]: Abstraction has 7258 states and 21937 transitions. [2022-02-11 01:44:31,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 54 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7258 states and 21937 transitions. [2022-02-11 01:44:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:31,678 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:31,678 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:31,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-02-11 01:44:31,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:31,879 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1880121557, now seen corresponding path program 54 times [2022-02-11 01:44:31,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:31,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062491122] [2022-02-11 01:44:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:32,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:32,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062491122] [2022-02-11 01:44:32,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062491122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:32,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102334472] [2022-02-11 01:44:32,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:44:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:32,402 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:32,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-11 01:44:32,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:44:32,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:32,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:44:32,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:32,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:32,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:33,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:34,126 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:34,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:34,260 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:34,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:34,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102334472] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:34,495 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:34,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:34,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399555194] [2022-02-11 01:44:34,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:34,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:34,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:34,496 INFO L87 Difference]: Start difference. First operand 7258 states and 21937 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:38,002 INFO L93 Difference]: Finished difference Result 13482 states and 40522 transitions. [2022-02-11 01:44:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:44:38,002 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:38,027 INFO L225 Difference]: With dead ends: 13482 [2022-02-11 01:44:38,028 INFO L226 Difference]: Without dead ends: 13413 [2022-02-11 01:44:38,028 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=701, Invalid=7309, Unknown=0, NotChecked=0, Total=8010 [2022-02-11 01:44:38,028 INFO L934 BasicCegarLoop]: 101 mSDtfsCounter, 460 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:38,028 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2613 Invalid, 4188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3972 Invalid, 0 Unknown, 100 Unchecked, 1.5s Time] [2022-02-11 01:44:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2022-02-11 01:44:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 7264. [2022-02-11 01:44:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7264 states, 7263 states have (on average 3.0218917802560927) internal successors, (21948), 7263 states have internal predecessors, (21948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7264 states to 7264 states and 21948 transitions. [2022-02-11 01:44:38,180 INFO L78 Accepts]: Start accepts. Automaton has 7264 states and 21948 transitions. Word has length 48 [2022-02-11 01:44:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:38,180 INFO L470 AbstractCegarLoop]: Abstraction has 7264 states and 21948 transitions. [2022-02-11 01:44:38,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7264 states and 21948 transitions. [2022-02-11 01:44:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:38,190 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:38,190 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:38,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-02-11 01:44:38,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-02-11 01:44:38,390 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 213722971, now seen corresponding path program 55 times [2022-02-11 01:44:38,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:38,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400728242] [2022-02-11 01:44:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:38,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:38,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:38,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400728242] [2022-02-11 01:44:38,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400728242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:38,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133940641] [2022-02-11 01:44:38,935 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:44:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:38,936 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:38,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-11 01:44:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:38,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:38,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:39,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:39,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:39,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:40,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:40,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:40,878 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:40,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:41,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133940641] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:41,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:41,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 54 [2022-02-11 01:44:41,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392299562] [2022-02-11 01:44:41,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:41,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:44:41,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:44:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:44:41,113 INFO L87 Difference]: Start difference. First operand 7264 states and 21948 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:44,247 INFO L93 Difference]: Finished difference Result 16648 states and 49765 transitions. [2022-02-11 01:44:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:44:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:44,280 INFO L225 Difference]: With dead ends: 16648 [2022-02-11 01:44:44,281 INFO L226 Difference]: Without dead ends: 16597 [2022-02-11 01:44:44,281 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 52 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=619, Invalid=6691, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:44:44,281 INFO L934 BasicCegarLoop]: 99 mSDtfsCounter, 378 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:44,281 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2418 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:44:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16597 states. [2022-02-11 01:44:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16597 to 7252. [2022-02-11 01:44:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 7251 states have (on average 3.02247965797821) internal successors, (21916), 7251 states have internal predecessors, (21916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 21916 transitions. [2022-02-11 01:44:44,505 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 21916 transitions. Word has length 48 [2022-02-11 01:44:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:44,505 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 21916 transitions. [2022-02-11 01:44:44,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 21916 transitions. [2022-02-11 01:44:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:44,515 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:44,515 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:44,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-02-11 01:44:44,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-02-11 01:44:44,715 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 988891109, now seen corresponding path program 56 times [2022-02-11 01:44:44,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:44,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034192741] [2022-02-11 01:44:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:44,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:45,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:45,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034192741] [2022-02-11 01:44:45,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034192741] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:45,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27000367] [2022-02-11 01:44:45,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:44:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:45,225 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:45,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-11 01:44:45,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:44:45,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:45,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:45,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:45,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:46,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:46,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:46,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:47,072 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:47,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:44:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:47,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27000367] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:47,330 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:47,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 52 [2022-02-11 01:44:47,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631753714] [2022-02-11 01:44:47,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:47,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:44:47,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:44:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2523, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:44:47,331 INFO L87 Difference]: Start difference. First operand 7252 states and 21916 transitions. Second operand has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:50,706 INFO L93 Difference]: Finished difference Result 16628 states and 49663 transitions. [2022-02-11 01:44:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:44:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:50,735 INFO L225 Difference]: With dead ends: 16628 [2022-02-11 01:44:50,735 INFO L226 Difference]: Without dead ends: 16546 [2022-02-11 01:44:50,735 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:44:50,736 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 407 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:50,736 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 2745 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 4013 Invalid, 0 Unknown, 98 Unchecked, 1.5s Time] [2022-02-11 01:44:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16546 states. [2022-02-11 01:44:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16546 to 7182. [2022-02-11 01:44:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7181 states have (on average 3.0320289653251637) internal successors, (21773), 7181 states have internal predecessors, (21773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 21773 transitions. [2022-02-11 01:44:50,893 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 21773 transitions. Word has length 48 [2022-02-11 01:44:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:50,893 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 21773 transitions. [2022-02-11 01:44:50,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 21773 transitions. [2022-02-11 01:44:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:50,902 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:50,902 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:50,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-02-11 01:44:51,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-02-11 01:44:51,103 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:51,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1985868295, now seen corresponding path program 57 times [2022-02-11 01:44:51,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:51,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142380902] [2022-02-11 01:44:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:51,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:51,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:51,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142380902] [2022-02-11 01:44:51,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142380902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:51,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814241149] [2022-02-11 01:44:51,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:44:51,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:51,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:51,610 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:51,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-11 01:44:51,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:44:51,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:51,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:51,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:52,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:44:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:52,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:44:53,422 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:53,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:44:53,568 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:44:53,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-11 01:44:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:53,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814241149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:44:53,801 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:44:53,801 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 56 [2022-02-11 01:44:53,801 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726526841] [2022-02-11 01:44:53,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:44:53,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-11 01:44:53,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:44:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-11 01:44:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2958, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:44:53,802 INFO L87 Difference]: Start difference. First operand 7182 states and 21773 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:44:58,158 INFO L93 Difference]: Finished difference Result 16459 states and 48695 transitions. [2022-02-11 01:44:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:44:58,158 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:44:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:44:58,184 INFO L225 Difference]: With dead ends: 16459 [2022-02-11 01:44:58,184 INFO L226 Difference]: Without dead ends: 16405 [2022-02-11 01:44:58,185 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=650, Invalid=8856, Unknown=0, NotChecked=0, Total=9506 [2022-02-11 01:44:58,185 INFO L934 BasicCegarLoop]: 137 mSDtfsCounter, 315 mSDsluCounter, 3920 mSDsCounter, 0 mSdLazyCounter, 5432 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 5507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:44:58,185 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2909 Invalid, 5507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5432 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-11 01:44:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16405 states. [2022-02-11 01:44:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16405 to 7194. [2022-02-11 01:44:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.0310023634088696) internal successors, (21802), 7193 states have internal predecessors, (21802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 21802 transitions. [2022-02-11 01:44:58,379 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 21802 transitions. Word has length 48 [2022-02-11 01:44:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:44:58,379 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 21802 transitions. [2022-02-11 01:44:58,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:44:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 21802 transitions. [2022-02-11 01:44:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:44:58,386 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:44:58,386 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:44:58,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-02-11 01:44:58,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:58,587 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:44:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:44:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1109685831, now seen corresponding path program 58 times [2022-02-11 01:44:58,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:44:58,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52588287] [2022-02-11 01:44:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:44:58,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:44:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:44:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:44:59,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:44:59,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52588287] [2022-02-11 01:44:59,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52588287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:44:59,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264208862] [2022-02-11 01:44:59,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:44:59,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:44:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:44:59,107 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:44:59,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-11 01:44:59,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:44:59,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:44:59,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:44:59,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:44:59,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:44:59,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:00,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:00,798 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:00,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:00,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:00,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:01,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264208862] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:01,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:01,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:45:01,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40020604] [2022-02-11 01:45:01,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:01,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:45:01,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:01,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:45:01,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:45:01,184 INFO L87 Difference]: Start difference. First operand 7194 states and 21802 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:03,623 INFO L93 Difference]: Finished difference Result 12686 states and 38269 transitions. [2022-02-11 01:45:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:45:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:03,644 INFO L225 Difference]: With dead ends: 12686 [2022-02-11 01:45:03,645 INFO L226 Difference]: Without dead ends: 12642 [2022-02-11 01:45:03,645 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=483, Invalid=5679, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:45:03,645 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 326 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:03,645 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2119 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 01:45:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2022-02-11 01:45:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 7190. [2022-02-11 01:45:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7190 states, 7189 states have (on average 3.0311587147030186) internal successors, (21791), 7189 states have internal predecessors, (21791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7190 states to 7190 states and 21791 transitions. [2022-02-11 01:45:03,779 INFO L78 Accepts]: Start accepts. Automaton has 7190 states and 21791 transitions. Word has length 48 [2022-02-11 01:45:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:03,779 INFO L470 AbstractCegarLoop]: Abstraction has 7190 states and 21791 transitions. [2022-02-11 01:45:03,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7190 states and 21791 transitions. [2022-02-11 01:45:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:03,787 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:03,787 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:03,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-02-11 01:45:03,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:03,987 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1844153155, now seen corresponding path program 59 times [2022-02-11 01:45:03,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:03,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847143326] [2022-02-11 01:45:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:04,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:04,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847143326] [2022-02-11 01:45:04,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847143326] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:04,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983801149] [2022-02-11 01:45:04,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:45:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:04,503 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:04,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-11 01:45:04,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:45:04,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:04,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:45:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:04,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:04,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:05,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:06,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:06,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:06,268 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:06,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:06,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983801149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:06,524 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:06,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:45:06,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959927813] [2022-02-11 01:45:06,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:06,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:45:06,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:45:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:45:06,525 INFO L87 Difference]: Start difference. First operand 7190 states and 21791 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:09,212 INFO L93 Difference]: Finished difference Result 15470 states and 46197 transitions. [2022-02-11 01:45:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 01:45:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:09,269 INFO L225 Difference]: With dead ends: 15470 [2022-02-11 01:45:09,269 INFO L226 Difference]: Without dead ends: 15413 [2022-02-11 01:45:09,270 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=475, Invalid=5845, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:45:09,270 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 339 mSDsluCounter, 3710 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:09,270 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2918 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:45:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15413 states. [2022-02-11 01:45:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15413 to 7196. [2022-02-11 01:45:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7196 states, 7195 states have (on average 3.030437804030577) internal successors, (21804), 7195 states have internal predecessors, (21804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7196 states to 7196 states and 21804 transitions. [2022-02-11 01:45:09,399 INFO L78 Accepts]: Start accepts. Automaton has 7196 states and 21804 transitions. Word has length 48 [2022-02-11 01:45:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:09,399 INFO L470 AbstractCegarLoop]: Abstraction has 7196 states and 21804 transitions. [2022-02-11 01:45:09,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 7196 states and 21804 transitions. [2022-02-11 01:45:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:09,407 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:09,407 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:09,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-02-11 01:45:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:09,608 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1167666681, now seen corresponding path program 60 times [2022-02-11 01:45:09,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:09,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655977830] [2022-02-11 01:45:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:09,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:10,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:10,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655977830] [2022-02-11 01:45:10,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655977830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:10,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266842576] [2022-02-11 01:45:10,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:45:10,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:10,118 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:10,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-11 01:45:10,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:45:10,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:10,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:45:10,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:10,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:10,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:11,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:12,022 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:12,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-11 01:45:12,228 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:12,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-11 01:45:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:12,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266842576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:12,485 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:12,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 60 [2022-02-11 01:45:12,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373920171] [2022-02-11 01:45:12,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:12,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-11 01:45:12,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-11 01:45:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=3389, Unknown=0, NotChecked=0, Total=3660 [2022-02-11 01:45:12,486 INFO L87 Difference]: Start difference. First operand 7196 states and 21804 transitions. Second operand has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:15,369 INFO L93 Difference]: Finished difference Result 15421 states and 46118 transitions. [2022-02-11 01:45:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:45:15,369 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:15,399 INFO L225 Difference]: With dead ends: 15421 [2022-02-11 01:45:15,399 INFO L226 Difference]: Without dead ends: 15305 [2022-02-11 01:45:15,400 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=588, Invalid=7602, Unknown=0, NotChecked=0, Total=8190 [2022-02-11 01:45:15,400 INFO L934 BasicCegarLoop]: 131 mSDtfsCounter, 442 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:15,400 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2634 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:45:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15305 states. [2022-02-11 01:45:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15305 to 7176. [2022-02-11 01:45:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7175 states have (on average 3.032891986062718) internal successors, (21761), 7175 states have internal predecessors, (21761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 21761 transitions. [2022-02-11 01:45:15,579 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 21761 transitions. Word has length 48 [2022-02-11 01:45:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:15,579 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 21761 transitions. [2022-02-11 01:45:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 21761 transitions. [2022-02-11 01:45:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:15,589 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:15,589 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:15,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-02-11 01:45:15,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:15,789 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1438624929, now seen corresponding path program 61 times [2022-02-11 01:45:15,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:15,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206169218] [2022-02-11 01:45:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:16,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:16,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206169218] [2022-02-11 01:45:16,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206169218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:16,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130700608] [2022-02-11 01:45:16,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:45:16,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:16,319 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:16,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-11 01:45:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:16,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:16,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:16,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:16,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:17,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:18,005 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:18,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:18,134 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:18,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:18,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130700608] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:18,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:18,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:45:18,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671752775] [2022-02-11 01:45:18,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:18,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:45:18,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:45:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:45:18,370 INFO L87 Difference]: Start difference. First operand 7176 states and 21761 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:21,133 INFO L93 Difference]: Finished difference Result 12727 states and 38354 transitions. [2022-02-11 01:45:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:45:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:21,155 INFO L225 Difference]: With dead ends: 12727 [2022-02-11 01:45:21,155 INFO L226 Difference]: Without dead ends: 12687 [2022-02-11 01:45:21,156 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=489, Invalid=5831, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:45:21,156 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 365 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:21,156 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2339 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:45:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12687 states. [2022-02-11 01:45:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12687 to 7194. [2022-02-11 01:45:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.031558459613513) internal successors, (21806), 7193 states have internal predecessors, (21806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 21806 transitions. [2022-02-11 01:45:21,303 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 21806 transitions. Word has length 48 [2022-02-11 01:45:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:21,303 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 21806 transitions. [2022-02-11 01:45:21,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 21806 transitions. [2022-02-11 01:45:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:21,312 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:21,312 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:21,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-02-11 01:45:21,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:21,512 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1667383773, now seen corresponding path program 62 times [2022-02-11 01:45:21,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:21,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208627815] [2022-02-11 01:45:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:22,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:22,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208627815] [2022-02-11 01:45:22,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208627815] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:22,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564234542] [2022-02-11 01:45:22,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:45:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:22,028 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:22,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-11 01:45:22,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:45:22,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:22,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:22,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:22,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:22,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:23,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:23,779 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:23,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:23,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:23,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:24,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564234542] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:24,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:24,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:45:24,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030552008] [2022-02-11 01:45:24,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:24,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:45:24,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:45:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:45:24,125 INFO L87 Difference]: Start difference. First operand 7194 states and 21806 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:26,943 INFO L93 Difference]: Finished difference Result 15342 states and 45924 transitions. [2022-02-11 01:45:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:45:26,944 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:26,970 INFO L225 Difference]: With dead ends: 15342 [2022-02-11 01:45:26,971 INFO L226 Difference]: Without dead ends: 15297 [2022-02-11 01:45:26,971 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=447, Invalid=5559, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:45:26,971 INFO L934 BasicCegarLoop]: 110 mSDtfsCounter, 260 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:26,971 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 3064 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:45:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2022-02-11 01:45:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 7188. [2022-02-11 01:45:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.031445665785446) internal successors, (21787), 7187 states have internal predecessors, (21787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 21787 transitions. [2022-02-11 01:45:27,128 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 21787 transitions. Word has length 48 [2022-02-11 01:45:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:27,128 INFO L470 AbstractCegarLoop]: Abstraction has 7188 states and 21787 transitions. [2022-02-11 01:45:27,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 21787 transitions. [2022-02-11 01:45:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:27,137 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:27,137 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:27,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-02-11 01:45:27,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:27,338 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1680851723, now seen corresponding path program 63 times [2022-02-11 01:45:27,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:27,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189577355] [2022-02-11 01:45:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:27,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:27,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189577355] [2022-02-11 01:45:27,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189577355] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:27,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28394272] [2022-02-11 01:45:27,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:45:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:27,856 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:27,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-11 01:45:27,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:45:27,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:27,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:28,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:28,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:28,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:29,501 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:29,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:29,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:29,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:29,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28394272] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:29,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:29,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:45:29,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786339562] [2022-02-11 01:45:29,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:29,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:45:29,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:45:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:45:29,862 INFO L87 Difference]: Start difference. First operand 7188 states and 21787 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:31,529 INFO L93 Difference]: Finished difference Result 12412 states and 37319 transitions. [2022-02-11 01:45:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:45:31,530 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:31,550 INFO L225 Difference]: With dead ends: 12412 [2022-02-11 01:45:31,550 INFO L226 Difference]: Without dead ends: 12404 [2022-02-11 01:45:31,550 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=3839, Unknown=0, NotChecked=0, Total=4160 [2022-02-11 01:45:31,551 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 344 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:31,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2457 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2677 Invalid, 0 Unknown, 111 Unchecked, 1.0s Time] [2022-02-11 01:45:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12404 states. [2022-02-11 01:45:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12404 to 7208. [2022-02-11 01:45:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 7207 states have (on average 3.029554599694741) internal successors, (21834), 7207 states have internal predecessors, (21834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 21834 transitions. [2022-02-11 01:45:31,674 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 21834 transitions. Word has length 48 [2022-02-11 01:45:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:31,675 INFO L470 AbstractCegarLoop]: Abstraction has 7208 states and 21834 transitions. [2022-02-11 01:45:31,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 21834 transitions. [2022-02-11 01:45:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:31,683 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:31,683 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:31,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-02-11 01:45:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:31,884 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1310847503, now seen corresponding path program 64 times [2022-02-11 01:45:31,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:31,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97567670] [2022-02-11 01:45:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:32,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:32,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97567670] [2022-02-11 01:45:32,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97567670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:32,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884394823] [2022-02-11 01:45:32,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:45:32,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:32,427 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:32,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-11 01:45:32,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:45:32,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:32,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:32,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:32,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:32,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:33,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:34,157 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:34,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:34,291 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:34,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:34,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884394823] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:34,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:34,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:45:34,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453772679] [2022-02-11 01:45:34,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:34,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:45:34,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:45:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:45:34,513 INFO L87 Difference]: Start difference. First operand 7208 states and 21834 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:37,271 INFO L93 Difference]: Finished difference Result 15556 states and 46360 transitions. [2022-02-11 01:45:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 01:45:37,272 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:37,299 INFO L225 Difference]: With dead ends: 15556 [2022-02-11 01:45:37,299 INFO L226 Difference]: Without dead ends: 15497 [2022-02-11 01:45:37,300 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=509, Invalid=6297, Unknown=0, NotChecked=0, Total=6806 [2022-02-11 01:45:37,300 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 364 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:37,300 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2855 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3498 Invalid, 0 Unknown, 368 Unchecked, 1.3s Time] [2022-02-11 01:45:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2022-02-11 01:45:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 7226. [2022-02-11 01:45:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7226 states, 7225 states have (on average 3.027681660899654) internal successors, (21875), 7225 states have internal predecessors, (21875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7226 states to 7226 states and 21875 transitions. [2022-02-11 01:45:37,460 INFO L78 Accepts]: Start accepts. Automaton has 7226 states and 21875 transitions. Word has length 48 [2022-02-11 01:45:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:37,461 INFO L470 AbstractCegarLoop]: Abstraction has 7226 states and 21875 transitions. [2022-02-11 01:45:37,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:37,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7226 states and 21875 transitions. [2022-02-11 01:45:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:37,470 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:37,470 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:37,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-02-11 01:45:37,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-02-11 01:45:37,670 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1526414205, now seen corresponding path program 65 times [2022-02-11 01:45:37,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:37,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306216533] [2022-02-11 01:45:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:38,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:38,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306216533] [2022-02-11 01:45:38,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306216533] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:38,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048266160] [2022-02-11 01:45:38,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:45:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:38,185 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:38,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-11 01:45:38,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:45:38,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:38,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:38,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:38,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:38,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:39,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:39,861 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:39,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:39,985 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:39,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:40,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048266160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:40,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:40,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:45:40,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417600104] [2022-02-11 01:45:40,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:40,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:45:40,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:45:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2645, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:45:40,213 INFO L87 Difference]: Start difference. First operand 7226 states and 21875 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:42,894 INFO L93 Difference]: Finished difference Result 15514 states and 46303 transitions. [2022-02-11 01:45:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 01:45:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:42,924 INFO L225 Difference]: With dead ends: 15514 [2022-02-11 01:45:42,924 INFO L226 Difference]: Without dead ends: 15341 [2022-02-11 01:45:42,925 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=479, Invalid=5841, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:45:42,925 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 368 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 360 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:42,925 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 3053 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3793 Invalid, 0 Unknown, 360 Unchecked, 1.4s Time] [2022-02-11 01:45:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15341 states. [2022-02-11 01:45:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15341 to 7204. [2022-02-11 01:45:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 7203 states have (on average 3.0284603637373317) internal successors, (21814), 7203 states have internal predecessors, (21814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 21814 transitions. [2022-02-11 01:45:43,139 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 21814 transitions. Word has length 48 [2022-02-11 01:45:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:43,139 INFO L470 AbstractCegarLoop]: Abstraction has 7204 states and 21814 transitions. [2022-02-11 01:45:43,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 21814 transitions. [2022-02-11 01:45:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:43,148 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:43,148 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:43,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-02-11 01:45:43,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-02-11 01:45:43,348 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash 442393127, now seen corresponding path program 66 times [2022-02-11 01:45:43,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:43,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085439435] [2022-02-11 01:45:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:43,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:43,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085439435] [2022-02-11 01:45:43,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085439435] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:43,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975327688] [2022-02-11 01:45:43,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:45:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:43,877 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:43,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-11 01:45:43,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:45:43,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:43,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:44,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:44,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:44,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:45,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:45,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:45,771 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:45,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:45,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975327688] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:45,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:45,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:45:45,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899275176] [2022-02-11 01:45:45,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:45,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:45:45,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:45:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:45:45,994 INFO L87 Difference]: Start difference. First operand 7204 states and 21814 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:48,714 INFO L93 Difference]: Finished difference Result 15438 states and 46105 transitions. [2022-02-11 01:45:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 01:45:48,715 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:48,743 INFO L225 Difference]: With dead ends: 15438 [2022-02-11 01:45:48,743 INFO L226 Difference]: Without dead ends: 15297 [2022-02-11 01:45:48,743 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=475, Invalid=5845, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:45:48,743 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 343 mSDsluCounter, 3864 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:48,743 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2972 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:45:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15297 states. [2022-02-11 01:45:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15297 to 7128. [2022-02-11 01:45:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 3.0350778728777885) internal successors, (21631), 7127 states have internal predecessors, (21631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 21631 transitions. [2022-02-11 01:45:48,906 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 21631 transitions. Word has length 48 [2022-02-11 01:45:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:48,906 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 21631 transitions. [2022-02-11 01:45:48,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 21631 transitions. [2022-02-11 01:45:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:48,916 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:48,916 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:48,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-02-11 01:45:49,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:49,116 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash -873155629, now seen corresponding path program 67 times [2022-02-11 01:45:49,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:49,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053641811] [2022-02-11 01:45:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:49,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053641811] [2022-02-11 01:45:49,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053641811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:49,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551869926] [2022-02-11 01:45:49,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:45:49,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:49,632 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:49,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-11 01:45:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:49,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:49,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:49,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:50,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:45:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:50,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:51,356 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:51,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:51,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:51,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:51,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551869926] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:51,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:51,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:45:51,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846716092] [2022-02-11 01:45:51,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:51,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:45:51,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:45:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:45:51,714 INFO L87 Difference]: Start difference. First operand 7128 states and 21631 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:54,109 INFO L93 Difference]: Finished difference Result 12635 states and 38136 transitions. [2022-02-11 01:45:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:45:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:54,134 INFO L225 Difference]: With dead ends: 12635 [2022-02-11 01:45:54,134 INFO L226 Difference]: Without dead ends: 12600 [2022-02-11 01:45:54,134 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=464, Invalid=5388, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:45:54,134 INFO L934 BasicCegarLoop]: 103 mSDtfsCounter, 325 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:54,134 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2154 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:45:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2022-02-11 01:45:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 7136. [2022-02-11 01:45:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.0343377715487034) internal successors, (21650), 7135 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21650 transitions. [2022-02-11 01:45:54,271 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21650 transitions. Word has length 48 [2022-02-11 01:45:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:54,271 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21650 transitions. [2022-02-11 01:45:54,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21650 transitions. [2022-02-11 01:45:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:54,279 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:54,279 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:54,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-02-11 01:45:54,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-02-11 01:45:54,480 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:45:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:45:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 3026835, now seen corresponding path program 68 times [2022-02-11 01:45:54,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:45:54,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882176844] [2022-02-11 01:45:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:45:54,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:45:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:45:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:54,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:45:54,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882176844] [2022-02-11 01:45:54,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882176844] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:45:54,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341792715] [2022-02-11 01:45:54,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:45:54,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:45:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:45:54,999 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:45:54,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-11 01:45:55,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:45:55,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:45:55,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:45:55,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:45:55,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:55,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:45:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:55,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:45:56,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:56,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:45:56,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:45:56,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:45:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:45:57,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341792715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:45:57,052 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:45:57,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:45:57,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681979405] [2022-02-11 01:45:57,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:45:57,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:45:57,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:45:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:45:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:45:57,053 INFO L87 Difference]: Start difference. First operand 7136 states and 21650 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:45:59,614 INFO L93 Difference]: Finished difference Result 12666 states and 38195 transitions. [2022-02-11 01:45:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:45:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:45:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:45:59,639 INFO L225 Difference]: With dead ends: 12666 [2022-02-11 01:45:59,639 INFO L226 Difference]: Without dead ends: 12622 [2022-02-11 01:45:59,640 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=477, Invalid=5223, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:45:59,640 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 347 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:45:59,640 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2563 Invalid, 3626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3443 Invalid, 0 Unknown, 82 Unchecked, 1.2s Time] [2022-02-11 01:45:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12622 states. [2022-02-11 01:45:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12622 to 7132. [2022-02-11 01:45:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0349179638199413) internal successors, (21642), 7131 states have internal predecessors, (21642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21642 transitions. [2022-02-11 01:45:59,793 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21642 transitions. Word has length 48 [2022-02-11 01:45:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:45:59,793 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21642 transitions. [2022-02-11 01:45:59,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:45:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21642 transitions. [2022-02-11 01:45:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:45:59,801 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:45:59,801 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:45:59,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-02-11 01:46:00,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-02-11 01:46:00,001 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2100109293, now seen corresponding path program 69 times [2022-02-11 01:46:00,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:00,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120009507] [2022-02-11 01:46:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:00,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:00,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120009507] [2022-02-11 01:46:00,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120009507] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:00,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514300255] [2022-02-11 01:46:00,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:46:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:00,513 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:00,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-11 01:46:00,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:46:00,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:00,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:00,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:00,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:00,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:01,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:02,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:02,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:02,268 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:02,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:02,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514300255] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:02,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:02,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:46:02,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361954273] [2022-02-11 01:46:02,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:02,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:46:02,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:46:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:46:02,507 INFO L87 Difference]: Start difference. First operand 7132 states and 21642 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:05,029 INFO L93 Difference]: Finished difference Result 15280 states and 45762 transitions. [2022-02-11 01:46:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:05,029 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:05,058 INFO L225 Difference]: With dead ends: 15280 [2022-02-11 01:46:05,058 INFO L226 Difference]: Without dead ends: 15245 [2022-02-11 01:46:05,058 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=432, Invalid=5268, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:46:05,058 INFO L934 BasicCegarLoop]: 106 mSDtfsCounter, 241 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 3887 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:05,059 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2825 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3887 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:46:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-02-11 01:46:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 7136. [2022-02-11 01:46:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 3.0343377715487034) internal successors, (21650), 7135 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 21650 transitions. [2022-02-11 01:46:05,219 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 21650 transitions. Word has length 48 [2022-02-11 01:46:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:05,219 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 21650 transitions. [2022-02-11 01:46:05,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 21650 transitions. [2022-02-11 01:46:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:05,229 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:05,229 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:05,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-02-11 01:46:05,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-02-11 01:46:05,429 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash 361940599, now seen corresponding path program 70 times [2022-02-11 01:46:05,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:05,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434493999] [2022-02-11 01:46:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:05,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:05,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434493999] [2022-02-11 01:46:05,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434493999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:05,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651175766] [2022-02-11 01:46:05,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:46:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:05,940 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:05,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-11 01:46:05,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:46:05,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:05,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:05,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:06,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:06,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:07,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:07,677 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:07,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:07,800 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:07,800 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 37 treesize of output 39 [2022-02-11 01:46:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:08,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651175766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:08,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:08,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:46:08,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751134370] [2022-02-11 01:46:08,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:08,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:46:08,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:46:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:46:08,029 INFO L87 Difference]: Start difference. First operand 7136 states and 21650 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:10,507 INFO L93 Difference]: Finished difference Result 15284 states and 45768 transitions. [2022-02-11 01:46:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:10,537 INFO L225 Difference]: With dead ends: 15284 [2022-02-11 01:46:10,537 INFO L226 Difference]: Without dead ends: 15241 [2022-02-11 01:46:10,538 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 52 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=432, Invalid=5268, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:46:10,538 INFO L934 BasicCegarLoop]: 105 mSDtfsCounter, 258 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:10,538 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2651 Invalid, 3848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3785 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-11 01:46:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15241 states. [2022-02-11 01:46:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15241 to 7132. [2022-02-11 01:46:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0346374982470903) internal successors, (21640), 7131 states have internal predecessors, (21640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21640 transitions. [2022-02-11 01:46:10,713 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21640 transitions. Word has length 48 [2022-02-11 01:46:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:10,713 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21640 transitions. [2022-02-11 01:46:10,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21640 transitions. [2022-02-11 01:46:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:10,722 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:10,722 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:10,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-02-11 01:46:10,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:10,935 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -494007049, now seen corresponding path program 71 times [2022-02-11 01:46:10,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:10,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593490388] [2022-02-11 01:46:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:11,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:11,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593490388] [2022-02-11 01:46:11,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593490388] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:11,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855732115] [2022-02-11 01:46:11,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:46:11,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:11,470 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:11,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-11 01:46:11,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:46:11,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:11,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:11,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:11,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:11,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:12,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:13,176 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:13,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:13,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:13,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:13,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855732115] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:13,538 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:13,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:46:13,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019714375] [2022-02-11 01:46:13,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:13,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:46:13,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:46:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:46:13,539 INFO L87 Difference]: Start difference. First operand 7132 states and 21640 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:15,950 INFO L93 Difference]: Finished difference Result 12668 states and 38199 transitions. [2022-02-11 01:46:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:15,972 INFO L225 Difference]: With dead ends: 12668 [2022-02-11 01:46:15,973 INFO L226 Difference]: Without dead ends: 12628 [2022-02-11 01:46:15,973 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=477, Invalid=5223, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:46:15,973 INFO L934 BasicCegarLoop]: 103 mSDtfsCounter, 357 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:15,973 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2239 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2958 Invalid, 0 Unknown, 102 Unchecked, 1.1s Time] [2022-02-11 01:46:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2022-02-11 01:46:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 7138. [2022-02-11 01:46:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 7137 states have (on average 3.0339078043996075) internal successors, (21653), 7137 states have internal predecessors, (21653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 21653 transitions. [2022-02-11 01:46:16,104 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 21653 transitions. Word has length 48 [2022-02-11 01:46:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:16,104 INFO L470 AbstractCegarLoop]: Abstraction has 7138 states and 21653 transitions. [2022-02-11 01:46:16,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 21653 transitions. [2022-02-11 01:46:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:16,112 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:16,112 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:16,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-02-11 01:46:16,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:16,313 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2134561661, now seen corresponding path program 72 times [2022-02-11 01:46:16,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:16,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640447286] [2022-02-11 01:46:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:16,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:16,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640447286] [2022-02-11 01:46:16,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640447286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:16,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977604433] [2022-02-11 01:46:16,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:46:16,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:16,826 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:16,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-11 01:46:16,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:46:16,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:16,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:17,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:17,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:17,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:18,541 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:18,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:18,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:18,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:18,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977604433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:18,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:18,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:46:18,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398934124] [2022-02-11 01:46:18,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:18,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:46:18,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:46:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:46:18,888 INFO L87 Difference]: Start difference. First operand 7138 states and 21653 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:21,384 INFO L93 Difference]: Finished difference Result 12629 states and 38115 transitions. [2022-02-11 01:46:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:21,384 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:21,408 INFO L225 Difference]: With dead ends: 12629 [2022-02-11 01:46:21,408 INFO L226 Difference]: Without dead ends: 12582 [2022-02-11 01:46:21,408 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=464, Invalid=5388, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:46:21,409 INFO L934 BasicCegarLoop]: 100 mSDtfsCounter, 324 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:21,409 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2246 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:46:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2022-02-11 01:46:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 7130. [2022-02-11 01:46:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.034787487726189) internal successors, (21635), 7129 states have internal predecessors, (21635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21635 transitions. [2022-02-11 01:46:21,550 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21635 transitions. Word has length 48 [2022-02-11 01:46:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:21,550 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21635 transitions. [2022-02-11 01:46:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21635 transitions. [2022-02-11 01:46:21,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:21,559 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:21,559 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:21,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-02-11 01:46:21,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:21,760 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:21,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1248400551, now seen corresponding path program 73 times [2022-02-11 01:46:21,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:21,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2977317] [2022-02-11 01:46:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:22,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:22,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2977317] [2022-02-11 01:46:22,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2977317] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:22,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651776500] [2022-02-11 01:46:22,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:46:22,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:22,297 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:22,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-11 01:46:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:22,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:22,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:22,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:22,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:23,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:23,916 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:23,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:24,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:24,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:24,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651776500] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:24,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:24,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:24,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824454921] [2022-02-11 01:46:24,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:24,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:24,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:24,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:24,280 INFO L87 Difference]: Start difference. First operand 7130 states and 21635 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:26,643 INFO L93 Difference]: Finished difference Result 15337 states and 45881 transitions. [2022-02-11 01:46:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:46:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:26,671 INFO L225 Difference]: With dead ends: 15337 [2022-02-11 01:46:26,671 INFO L226 Difference]: Without dead ends: 15302 [2022-02-11 01:46:26,671 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=461, Invalid=5701, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:46:26,671 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 306 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:26,671 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2439 Invalid, 3233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:46:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15302 states. [2022-02-11 01:46:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15302 to 7138. [2022-02-11 01:46:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 7137 states have (on average 3.0339078043996075) internal successors, (21653), 7137 states have internal predecessors, (21653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 21653 transitions. [2022-02-11 01:46:26,835 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 21653 transitions. Word has length 48 [2022-02-11 01:46:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:26,835 INFO L470 AbstractCegarLoop]: Abstraction has 7138 states and 21653 transitions. [2022-02-11 01:46:26,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 21653 transitions. [2022-02-11 01:46:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:26,843 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:26,843 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:26,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-02-11 01:46:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:27,043 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2124583015, now seen corresponding path program 74 times [2022-02-11 01:46:27,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:27,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171902730] [2022-02-11 01:46:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:27,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:27,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171902730] [2022-02-11 01:46:27,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171902730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:27,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254195035] [2022-02-11 01:46:27,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:46:27,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:27,556 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:27,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-11 01:46:27,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:46:27,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:27,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:27,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:27,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:28,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:29,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:29,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:29,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:29,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:29,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254195035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:29,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:29,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:29,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452855865] [2022-02-11 01:46:29,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:29,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:29,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:29,673 INFO L87 Difference]: Start difference. First operand 7138 states and 21653 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:32,790 INFO L93 Difference]: Finished difference Result 21362 states and 63936 transitions. [2022-02-11 01:46:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:46:32,790 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:32,830 INFO L225 Difference]: With dead ends: 21362 [2022-02-11 01:46:32,830 INFO L226 Difference]: Without dead ends: 21288 [2022-02-11 01:46:32,830 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 56 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=589, Invalid=6721, Unknown=0, NotChecked=0, Total=7310 [2022-02-11 01:46:32,830 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 416 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:32,830 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2399 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3118 Invalid, 0 Unknown, 86 Unchecked, 1.2s Time] [2022-02-11 01:46:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21288 states. [2022-02-11 01:46:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21288 to 7130. [2022-02-11 01:46:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 3.0346472155982607) internal successors, (21634), 7129 states have internal predecessors, (21634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 21634 transitions. [2022-02-11 01:46:33,045 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 21634 transitions. Word has length 48 [2022-02-11 01:46:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:33,045 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 21634 transitions. [2022-02-11 01:46:33,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 21634 transitions. [2022-02-11 01:46:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:33,054 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:33,054 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:33,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-02-11 01:46:33,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:33,255 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash -896412165, now seen corresponding path program 75 times [2022-02-11 01:46:33,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:33,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050430842] [2022-02-11 01:46:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:33,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:33,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:33,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050430842] [2022-02-11 01:46:33,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050430842] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:33,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992469448] [2022-02-11 01:46:33,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:46:33,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:33,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:33,777 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:33,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-11 01:46:33,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:46:33,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:33,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:33,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:33,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:34,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:34,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:35,466 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:35,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:35,589 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:35,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:35,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992469448] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:35,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:35,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:35,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004175335] [2022-02-11 01:46:35,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:35,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:35,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:35,823 INFO L87 Difference]: Start difference. First operand 7130 states and 21634 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:38,413 INFO L93 Difference]: Finished difference Result 12728 states and 38323 transitions. [2022-02-11 01:46:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:46:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:38,437 INFO L225 Difference]: With dead ends: 12728 [2022-02-11 01:46:38,438 INFO L226 Difference]: Without dead ends: 12635 [2022-02-11 01:46:38,438 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=522, Invalid=6120, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:46:38,438 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 416 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:38,438 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2235 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2817 Invalid, 0 Unknown, 185 Unchecked, 1.1s Time] [2022-02-11 01:46:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2022-02-11 01:46:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 7142. [2022-02-11 01:46:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 7141 states have (on average 3.0331886290435515) internal successors, (21660), 7141 states have internal predecessors, (21660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 21660 transitions. [2022-02-11 01:46:38,578 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 21660 transitions. Word has length 48 [2022-02-11 01:46:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:38,578 INFO L470 AbstractCegarLoop]: Abstraction has 7142 states and 21660 transitions. [2022-02-11 01:46:38,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 21660 transitions. [2022-02-11 01:46:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:38,587 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:38,587 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:38,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-02-11 01:46:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:38,788 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1732156545, now seen corresponding path program 76 times [2022-02-11 01:46:38,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:38,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121141718] [2022-02-11 01:46:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:39,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:39,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121141718] [2022-02-11 01:46:39,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121141718] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:39,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167726464] [2022-02-11 01:46:39,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:46:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:39,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:39,302 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:39,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-11 01:46:39,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:46:39,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:39,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:39,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:39,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:40,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:41,083 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:41,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:41,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:41,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:41,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167726464] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:41,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:41,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:41,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693091601] [2022-02-11 01:46:41,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:41,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:41,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:41,423 INFO L87 Difference]: Start difference. First operand 7142 states and 21660 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:43,738 INFO L93 Difference]: Finished difference Result 15290 states and 45778 transitions. [2022-02-11 01:46:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:43,764 INFO L225 Difference]: With dead ends: 15290 [2022-02-11 01:46:43,765 INFO L226 Difference]: Without dead ends: 15237 [2022-02-11 01:46:43,765 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=453, Invalid=5553, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:46:43,765 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 310 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:43,765 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2296 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:46:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15237 states. [2022-02-11 01:46:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15237 to 7128. [2022-02-11 01:46:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 3.0347972498947664) internal successors, (21629), 7127 states have internal predecessors, (21629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 21629 transitions. [2022-02-11 01:46:43,923 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 21629 transitions. Word has length 48 [2022-02-11 01:46:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:43,923 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 21629 transitions. [2022-02-11 01:46:43,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 21629 transitions. [2022-02-11 01:46:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:43,931 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:43,931 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:43,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-02-11 01:46:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-02-11 01:46:44,132 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 310275829, now seen corresponding path program 77 times [2022-02-11 01:46:44,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:44,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227007477] [2022-02-11 01:46:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:44,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:44,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227007477] [2022-02-11 01:46:44,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227007477] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:44,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879439927] [2022-02-11 01:46:44,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:46:44,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:44,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:44,660 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:44,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-11 01:46:44,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:46:44,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:44,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:44,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:44,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:45,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:45,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:46,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:46,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:46,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:46,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:46,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879439927] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:46,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:46,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:46,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551875485] [2022-02-11 01:46:46,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:46,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:46,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:46,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:46,756 INFO L87 Difference]: Start difference. First operand 7128 states and 21629 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:49,317 INFO L93 Difference]: Finished difference Result 15318 states and 45833 transitions. [2022-02-11 01:46:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:46:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:49,347 INFO L225 Difference]: With dead ends: 15318 [2022-02-11 01:46:49,347 INFO L226 Difference]: Without dead ends: 15283 [2022-02-11 01:46:49,348 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1803 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=461, Invalid=5701, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:46:49,348 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 290 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 3489 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:49,348 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2733 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3489 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:46:49,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15283 states. [2022-02-11 01:46:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15283 to 7132. [2022-02-11 01:46:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7131 states have (on average 3.0340765671013883) internal successors, (21636), 7131 states have internal predecessors, (21636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 21636 transitions. [2022-02-11 01:46:49,522 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 21636 transitions. Word has length 48 [2022-02-11 01:46:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:49,522 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 21636 transitions. [2022-02-11 01:46:49,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 21636 transitions. [2022-02-11 01:46:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:49,531 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:49,532 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:49,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-02-11 01:46:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-11 01:46:49,732 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1186458293, now seen corresponding path program 78 times [2022-02-11 01:46:49,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:49,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621492517] [2022-02-11 01:46:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:50,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:50,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621492517] [2022-02-11 01:46:50,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621492517] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:50,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796227104] [2022-02-11 01:46:50,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:46:50,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:50,264 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:50,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-11 01:46:50,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:46:50,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:46:50,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:50,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:50,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:50,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:46:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:51,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:52,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:52,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:52,147 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:52,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:52,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796227104] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:52,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:52,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:52,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715276481] [2022-02-11 01:46:52,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:52,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:52,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:52,363 INFO L87 Difference]: Start difference. First operand 7132 states and 21636 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:46:55,025 INFO L93 Difference]: Finished difference Result 12624 states and 38103 transitions. [2022-02-11 01:46:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:46:55,025 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:46:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:46:55,048 INFO L225 Difference]: With dead ends: 12624 [2022-02-11 01:46:55,048 INFO L226 Difference]: Without dead ends: 12572 [2022-02-11 01:46:55,048 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=489, Invalid=5673, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:46:55,048 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 373 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:46:55,048 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2589 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:46:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12572 states. [2022-02-11 01:46:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12572 to 7120. [2022-02-11 01:46:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 3.0361005759235846) internal successors, (21614), 7119 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 21614 transitions. [2022-02-11 01:46:55,181 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 21614 transitions. Word has length 48 [2022-02-11 01:46:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:46:55,181 INFO L470 AbstractCegarLoop]: Abstraction has 7120 states and 21614 transitions. [2022-02-11 01:46:55,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:46:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 21614 transitions. [2022-02-11 01:46:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:46:55,190 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:46:55,190 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:46:55,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-02-11 01:46:55,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-11 01:46:55,390 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:46:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:46:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1314885943, now seen corresponding path program 79 times [2022-02-11 01:46:55,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:46:55,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813937404] [2022-02-11 01:46:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:46:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:46:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:55,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:46:55,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813937404] [2022-02-11 01:46:55,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813937404] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:46:55,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587753333] [2022-02-11 01:46:55,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:46:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:46:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:46:55,914 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:46:55,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-11 01:46:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:46:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:46:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:46:56,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:56,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:46:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:56,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:46:57,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:57,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:46:57,743 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:46:57,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:46:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:46:57,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587753333] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:46:57,973 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:46:57,973 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:46:57,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540748764] [2022-02-11 01:46:57,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:46:57,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:46:57,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:46:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:46:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2653, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:46:57,974 INFO L87 Difference]: Start difference. First operand 7120 states and 21614 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:00,676 INFO L93 Difference]: Finished difference Result 12659 states and 38175 transitions. [2022-02-11 01:47:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:47:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:00,697 INFO L225 Difference]: With dead ends: 12659 [2022-02-11 01:47:00,697 INFO L226 Difference]: Without dead ends: 12619 [2022-02-11 01:47:00,698 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=503, Invalid=5817, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:47:00,698 INFO L934 BasicCegarLoop]: 104 mSDtfsCounter, 400 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:00,698 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2619 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3441 Invalid, 0 Unknown, 85 Unchecked, 1.2s Time] [2022-02-11 01:47:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12619 states. [2022-02-11 01:47:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12619 to 7126. [2022-02-11 01:47:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 3.0353684210526315) internal successors, (21627), 7125 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 21627 transitions. [2022-02-11 01:47:00,841 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 21627 transitions. Word has length 48 [2022-02-11 01:47:00,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:00,842 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 21627 transitions. [2022-02-11 01:47:00,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 21627 transitions. [2022-02-11 01:47:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:00,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:00,849 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:00,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-02-11 01:47:01,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-02-11 01:47:01,050 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -351512643, now seen corresponding path program 80 times [2022-02-11 01:47:01,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:01,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507175207] [2022-02-11 01:47:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:01,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:01,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507175207] [2022-02-11 01:47:01,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507175207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:01,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267640681] [2022-02-11 01:47:01,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:47:01,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:01,564 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:01,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-11 01:47:01,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:47:01,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:01,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:01,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:01,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:47:01,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:47:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:02,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:03,179 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:03,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:03,296 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:03,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:03,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267640681] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:03,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:03,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2022-02-11 01:47:03,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871780581] [2022-02-11 01:47:03,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:03,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 01:47:03,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 01:47:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2649, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:47:03,522 INFO L87 Difference]: Start difference. First operand 7126 states and 21627 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:05,893 INFO L93 Difference]: Finished difference Result 15274 states and 45745 transitions. [2022-02-11 01:47:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:47:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:05,919 INFO L225 Difference]: With dead ends: 15274 [2022-02-11 01:47:05,919 INFO L226 Difference]: Without dead ends: 15186 [2022-02-11 01:47:05,920 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=453, Invalid=5553, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:47:05,920 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 300 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:05,920 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2398 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:47:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15186 states. [2022-02-11 01:47:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15186 to 7077. [2022-02-11 01:47:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7077 states, 7076 states have (on average 3.0416902204635385) internal successors, (21523), 7076 states have internal predecessors, (21523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7077 states to 7077 states and 21523 transitions. [2022-02-11 01:47:06,068 INFO L78 Accepts]: Start accepts. Automaton has 7077 states and 21523 transitions. Word has length 48 [2022-02-11 01:47:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:06,068 INFO L470 AbstractCegarLoop]: Abstraction has 7077 states and 21523 transitions. [2022-02-11 01:47:06,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7077 states and 21523 transitions. [2022-02-11 01:47:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:06,077 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:06,077 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:06,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-02-11 01:47:06,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:06,279 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:06,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:06,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1942194647, now seen corresponding path program 81 times [2022-02-11 01:47:06,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:06,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205198867] [2022-02-11 01:47:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:06,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:06,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205198867] [2022-02-11 01:47:06,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205198867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:06,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282744460] [2022-02-11 01:47:06,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:47:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:06,804 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:06,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-11 01:47:06,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:47:06,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:06,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-11 01:47:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:07,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:07,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-11 01:47:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:07,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:08,597 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:08,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:08,742 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:08,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-11 01:47:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:08,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282744460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:08,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:08,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 56 [2022-02-11 01:47:08,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606451754] [2022-02-11 01:47:08,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:08,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-11 01:47:08,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-11 01:47:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2959, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:47:08,994 INFO L87 Difference]: Start difference. First operand 7077 states and 21523 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:12,792 INFO L93 Difference]: Finished difference Result 12161 states and 36108 transitions. [2022-02-11 01:47:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 01:47:12,792 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:12,810 INFO L225 Difference]: With dead ends: 12161 [2022-02-11 01:47:12,810 INFO L226 Difference]: Without dead ends: 12084 [2022-02-11 01:47:12,811 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=633, Invalid=8873, Unknown=0, NotChecked=0, Total=9506 [2022-02-11 01:47:12,811 INFO L934 BasicCegarLoop]: 139 mSDtfsCounter, 282 mSDsluCounter, 5527 mSDsCounter, 0 mSdLazyCounter, 5358 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 5892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 470 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:12,811 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 4039 Invalid, 5892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5358 Invalid, 0 Unknown, 470 Unchecked, 1.9s Time] [2022-02-11 01:47:12,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12084 states. [2022-02-11 01:47:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12084 to 7169. [2022-02-11 01:47:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 7168 states have (on average 3.0330636160714284) internal successors, (21741), 7168 states have internal predecessors, (21741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 21741 transitions. [2022-02-11 01:47:12,931 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 21741 transitions. Word has length 48 [2022-02-11 01:47:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:12,931 INFO L470 AbstractCegarLoop]: Abstraction has 7169 states and 21741 transitions. [2022-02-11 01:47:12,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 21741 transitions. [2022-02-11 01:47:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:12,939 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:12,939 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:12,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-02-11 01:47:13,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:13,139 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:13,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1825856653, now seen corresponding path program 82 times [2022-02-11 01:47:13,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:13,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422743465] [2022-02-11 01:47:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:13,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:13,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422743465] [2022-02-11 01:47:13,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422743465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:13,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448976854] [2022-02-11 01:47:13,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:47:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:13,676 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:13,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-02-11 01:47:13,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:47:13,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:13,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:13,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:13,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:14,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:14,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:15,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:15,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:15,378 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:15,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:15,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448976854] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:15,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:15,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:47:15,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585958094] [2022-02-11 01:47:15,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:15,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:47:15,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:47:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:47:15,609 INFO L87 Difference]: Start difference. First operand 7169 states and 21741 transitions. Second operand has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:18,123 INFO L93 Difference]: Finished difference Result 15308 states and 45835 transitions. [2022-02-11 01:47:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:47:18,123 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:18,180 INFO L225 Difference]: With dead ends: 15308 [2022-02-11 01:47:18,180 INFO L226 Difference]: Without dead ends: 15215 [2022-02-11 01:47:18,180 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=467, Invalid=5695, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:47:18,180 INFO L934 BasicCegarLoop]: 110 mSDtfsCounter, 314 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:18,180 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2827 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3520 Invalid, 0 Unknown, 316 Unchecked, 1.3s Time] [2022-02-11 01:47:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2022-02-11 01:47:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 7097. [2022-02-11 01:47:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7097 states, 7096 states have (on average 3.0386133032694476) internal successors, (21562), 7096 states have internal predecessors, (21562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 21562 transitions. [2022-02-11 01:47:18,329 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 21562 transitions. Word has length 48 [2022-02-11 01:47:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:18,329 INFO L470 AbstractCegarLoop]: Abstraction has 7097 states and 21562 transitions. [2022-02-11 01:47:18,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 52 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 21562 transitions. [2022-02-11 01:47:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:18,338 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:18,338 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:18,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-02-11 01:47:18,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:18,539 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1173462551, now seen corresponding path program 83 times [2022-02-11 01:47:18,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:18,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3334911] [2022-02-11 01:47:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:18,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:19,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:19,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3334911] [2022-02-11 01:47:19,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3334911] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:19,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463442377] [2022-02-11 01:47:19,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:47:19,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:19,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:19,057 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-02-11 01:47:19,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:47:19,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:19,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:47:19,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:19,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:19,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:19,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:20,671 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:20,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:20,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:20,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:21,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463442377] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:21,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:21,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 54 [2022-02-11 01:47:21,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911869912] [2022-02-11 01:47:21,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:21,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 01:47:21,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 01:47:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2757, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:47:21,036 INFO L87 Difference]: Start difference. First operand 7097 states and 21562 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:23,775 INFO L93 Difference]: Finished difference Result 15262 states and 45725 transitions. [2022-02-11 01:47:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:47:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:23,804 INFO L225 Difference]: With dead ends: 15262 [2022-02-11 01:47:23,804 INFO L226 Difference]: Without dead ends: 15227 [2022-02-11 01:47:23,805 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=446, Invalid=5716, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:47:23,805 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 233 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 4361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:23,805 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 3479 Invalid, 4361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:47:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2022-02-11 01:47:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 7109. [2022-02-11 01:47:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7109 states, 7108 states have (on average 3.037563308947665) internal successors, (21591), 7108 states have internal predecessors, (21591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 21591 transitions. [2022-02-11 01:47:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 21591 transitions. Word has length 48 [2022-02-11 01:47:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:23,992 INFO L470 AbstractCegarLoop]: Abstraction has 7109 states and 21591 transitions. [2022-02-11 01:47:23,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 21591 transitions. [2022-02-11 01:47:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:24,001 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:24,002 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:24,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2022-02-11 01:47:24,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:24,202 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2049645015, now seen corresponding path program 84 times [2022-02-11 01:47:24,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:24,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592854267] [2022-02-11 01:47:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:24,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:24,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:24,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592854267] [2022-02-11 01:47:24,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592854267] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:24,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346312140] [2022-02-11 01:47:24,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:47:24,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:24,719 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:24,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-02-11 01:47:24,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:47:24,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:24,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:47:24,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:24,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:25,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:25,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:26,702 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:26,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-02-11 01:47:26,915 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:26,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 63 [2022-02-11 01:47:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:27,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346312140] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:27,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:27,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 60 [2022-02-11 01:47:27,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386767050] [2022-02-11 01:47:27,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:27,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-11 01:47:27,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-11 01:47:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3406, Unknown=0, NotChecked=0, Total=3660 [2022-02-11 01:47:27,148 INFO L87 Difference]: Start difference. First operand 7109 states and 21591 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:29,980 INFO L93 Difference]: Finished difference Result 13044 states and 39176 transitions. [2022-02-11 01:47:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:47:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:30,004 INFO L225 Difference]: With dead ends: 13044 [2022-02-11 01:47:30,004 INFO L226 Difference]: Without dead ends: 13000 [2022-02-11 01:47:30,004 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=567, Invalid=7265, Unknown=0, NotChecked=0, Total=7832 [2022-02-11 01:47:30,005 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 379 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:30,005 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 2937 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:47:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13000 states. [2022-02-11 01:47:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13000 to 7105. [2022-02-11 01:47:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 7104 states have (on average 3.037725225225225) internal successors, (21580), 7104 states have internal predecessors, (21580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 21580 transitions. [2022-02-11 01:47:30,136 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 21580 transitions. Word has length 48 [2022-02-11 01:47:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:30,137 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 21580 transitions. [2022-02-11 01:47:30,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 21580 transitions. [2022-02-11 01:47:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:30,145 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:30,145 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:30,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-02-11 01:47:30,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:30,346 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:30,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1315177691, now seen corresponding path program 85 times [2022-02-11 01:47:30,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:30,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565196483] [2022-02-11 01:47:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:30,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:30,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565196483] [2022-02-11 01:47:30,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565196483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:30,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544875194] [2022-02-11 01:47:30,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:47:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:30,862 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:30,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-02-11 01:47:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:30,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:31,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:31,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:31,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:32,548 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:32,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:32,674 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:32,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:32,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544875194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:32,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:32,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 55 [2022-02-11 01:47:32,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658636531] [2022-02-11 01:47:32,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:32,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-11 01:47:32,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-11 01:47:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2862, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:47:32,909 INFO L87 Difference]: Start difference. First operand 7105 states and 21580 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:35,528 INFO L93 Difference]: Finished difference Result 14356 states and 42884 transitions. [2022-02-11 01:47:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-11 01:47:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:35,553 INFO L225 Difference]: With dead ends: 14356 [2022-02-11 01:47:35,553 INFO L226 Difference]: Without dead ends: 14347 [2022-02-11 01:47:35,554 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=463, Invalid=6179, Unknown=0, NotChecked=0, Total=6642 [2022-02-11 01:47:35,554 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 342 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:35,554 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3478 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3768 Invalid, 0 Unknown, 253 Unchecked, 1.4s Time] [2022-02-11 01:47:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2022-02-11 01:47:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 7129. [2022-02-11 01:47:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 7128 states have (on average 3.0356341189674523) internal successors, (21638), 7128 states have internal predecessors, (21638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 21638 transitions. [2022-02-11 01:47:35,709 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 21638 transitions. Word has length 48 [2022-02-11 01:47:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:35,709 INFO L470 AbstractCegarLoop]: Abstraction has 7129 states and 21638 transitions. [2022-02-11 01:47:35,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:35,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 21638 transitions. [2022-02-11 01:47:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:35,717 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:35,718 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:35,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-02-11 01:47:35,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:35,918 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 945173471, now seen corresponding path program 86 times [2022-02-11 01:47:35,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:35,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821211043] [2022-02-11 01:47:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:36,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:36,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821211043] [2022-02-11 01:47:36,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821211043] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:36,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184405158] [2022-02-11 01:47:36,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:47:36,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:36,442 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:36,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-02-11 01:47:36,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:47:36,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:36,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:36,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:36,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:36,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:37,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:38,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:38,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:38,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:38,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:38,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184405158] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:38,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:38,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 55 [2022-02-11 01:47:38,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583387314] [2022-02-11 01:47:38,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:38,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-11 01:47:38,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-11 01:47:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2862, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 01:47:38,437 INFO L87 Difference]: Start difference. First operand 7129 states and 21638 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:40,933 INFO L93 Difference]: Finished difference Result 15274 states and 45750 transitions. [2022-02-11 01:47:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:47:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:40,959 INFO L225 Difference]: With dead ends: 15274 [2022-02-11 01:47:40,959 INFO L226 Difference]: Without dead ends: 15219 [2022-02-11 01:47:40,959 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=461, Invalid=5859, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:47:40,960 INFO L934 BasicCegarLoop]: 115 mSDtfsCounter, 305 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:40,960 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2839 Invalid, 3623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:47:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2022-02-11 01:47:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 7101. [2022-02-11 01:47:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7101 states, 7100 states have (on average 3.037887323943662) internal successors, (21569), 7100 states have internal predecessors, (21569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 21569 transitions. [2022-02-11 01:47:41,105 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 21569 transitions. Word has length 48 [2022-02-11 01:47:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:41,105 INFO L470 AbstractCegarLoop]: Abstraction has 7101 states and 21569 transitions. [2022-02-11 01:47:41,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 21569 transitions. [2022-02-11 01:47:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:41,113 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:41,113 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:41,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-02-11 01:47:41,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-02-11 01:47:41,321 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 32030231, now seen corresponding path program 87 times [2022-02-11 01:47:41,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:41,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763342507] [2022-02-11 01:47:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:41,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:41,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763342507] [2022-02-11 01:47:41,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763342507] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:41,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122198298] [2022-02-11 01:47:41,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:47:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:41,842 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:41,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-02-11 01:47:41,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:47:41,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:41,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:41,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:42,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:42,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:42,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:43,654 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:43,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-02-11 01:47:43,807 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:43,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2022-02-11 01:47:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:44,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122198298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:44,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:44,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 59 [2022-02-11 01:47:44,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998924524] [2022-02-11 01:47:44,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:44,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-02-11 01:47:44,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-02-11 01:47:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3292, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:47:44,057 INFO L87 Difference]: Start difference. First operand 7101 states and 21569 transitions. Second operand has 60 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:47:48,131 INFO L93 Difference]: Finished difference Result 16419 states and 48578 transitions. [2022-02-11 01:47:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:47:48,131 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-02-11 01:47:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:47:48,158 INFO L225 Difference]: With dead ends: 16419 [2022-02-11 01:47:48,159 INFO L226 Difference]: Without dead ends: 16293 [2022-02-11 01:47:48,159 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=690, Invalid=9410, Unknown=0, NotChecked=0, Total=10100 [2022-02-11 01:47:48,159 INFO L934 BasicCegarLoop]: 142 mSDtfsCounter, 363 mSDsluCounter, 3776 mSDsCounter, 0 mSdLazyCounter, 4410 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:48,160 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2743 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4410 Invalid, 0 Unknown, 355 Unchecked, 1.6s Time] [2022-02-11 01:47:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16293 states. [2022-02-11 01:47:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16293 to 7081. [2022-02-11 01:47:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 7080 states have (on average 3.040960451977401) internal successors, (21530), 7080 states have internal predecessors, (21530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 21530 transitions. [2022-02-11 01:47:48,325 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 21530 transitions. Word has length 48 [2022-02-11 01:47:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:47:48,325 INFO L470 AbstractCegarLoop]: Abstraction has 7081 states and 21530 transitions. [2022-02-11 01:47:48,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.95) internal successors, (117), 59 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:47:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 21530 transitions. [2022-02-11 01:47:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-11 01:47:48,333 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:47:48,333 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:47:48,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-02-11 01:47:48,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-02-11 01:47:48,533 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:47:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:47:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -710092129, now seen corresponding path program 88 times [2022-02-11 01:47:48,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:47:48,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374444297] [2022-02-11 01:47:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:47:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:47:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:47:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:49,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:47:49,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374444297] [2022-02-11 01:47:49,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374444297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:47:49,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450814238] [2022-02-11 01:47:49,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:47:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:47:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:47:49,065 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:47:49,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-02-11 01:47:49,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:47:49,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:47:49,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:47:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:47:49,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:49,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-11 01:47:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:49,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:47:50,636 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:50,636 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 34 treesize of output 36 [2022-02-11 01:47:50,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:47:50,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-02-11 01:47:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:47:51,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450814238] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:47:51,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:47:51,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2022-02-11 01:47:51,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275826151] [2022-02-11 01:47:51,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:47:51,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 01:47:51,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:47:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 01:47:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:47:51,014 INFO L87 Difference]: Start difference. First operand 7081 states and 21530 transitions. Second operand has 53 states, 53 states have (on average 2.169811320754717) internal successors, (115), 52 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-11 01:47:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 01:47:53,075 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=457, Invalid=5549, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:47:53,075 INFO L934 BasicCegarLoop]: 100 mSDtfsCounter, 317 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:47:53,075 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2300 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2759 Invalid, 0 Unknown, 162 Unchecked, 1.0s Time] [2022-02-11 01:47:53,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-11 01:47:53,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-02-11 01:47:53,120 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:47:53,120 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:47:53,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-02-11 01:47:53,277 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (7081states) and FLOYD_HOARE automaton (currently 42 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 78 known predicates. [2022-02-11 01:47:53,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-11 01:47:53,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-11 01:47:53,278 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-11 01:47:53,280 INFO L733 BasicCegarLoop]: Path program histogram: [89, 88, 2, 1] [2022-02-11 01:47:53,282 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 01:47:53,282 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 01:47:53,283 INFO L202 PluginConnector]: Adding new model queue-add-3-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:47:53 BasicIcfg [2022-02-11 01:47:53,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 01:47:53,283 INFO L158 Benchmark]: Toolchain (without parser) took 743985.93ms. Allocated memory was 212.9MB in the beginning and 723.5MB in the end (delta: 510.7MB). Free memory was 177.8MB in the beginning and 320.6MB in the end (delta: -142.8MB). Peak memory consumption was 368.2MB. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 179.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.74ms. Allocated memory is still 212.9MB. Free memory was 177.7MB in the beginning and 176.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 INFO L158 Benchmark]: Boogie Preprocessor took 23.98ms. Allocated memory is still 212.9MB. Free memory was 176.1MB in the beginning and 175.2MB in the end (delta: 957.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 INFO L158 Benchmark]: RCFGBuilder took 260.96ms. Allocated memory is still 212.9MB. Free memory was 175.0MB in the beginning and 164.8MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 INFO L158 Benchmark]: TraceAbstraction took 743674.64ms. Allocated memory was 212.9MB in the beginning and 723.5MB in the end (delta: 510.7MB). Free memory was 164.2MB in the beginning and 320.6MB in the end (delta: -156.4MB). Peak memory consumption was 354.6MB. Max. memory is 8.0GB. [2022-02-11 01:47:53,283 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 0.11ms. Allocated memory is still 212.9MB. Free memory is still 179.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.74ms. Allocated memory is still 212.9MB. Free memory was 177.7MB in the beginning and 176.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.98ms. Allocated memory is still 212.9MB. Free memory was 176.1MB in the beginning and 175.2MB in the end (delta: 957.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 260.96ms. Allocated memory is still 212.9MB. Free memory was 175.0MB in the beginning and 164.8MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 743674.64ms. Allocated memory was 212.9MB in the beginning and 723.5MB in the end (delta: 510.7MB). Free memory was 164.2MB in the beginning and 320.6MB in the end (delta: -156.4MB). Peak memory consumption was 354.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (7081states) and FLOYD_HOARE automaton (currently 42 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 78 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7081states) and FLOYD_HOARE automaton (currently 42 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 78 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7081states) and FLOYD_HOARE automaton (currently 42 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 78 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (7081states) and FLOYD_HOARE automaton (currently 42 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 78 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 743.5s, OverallIterations: 180, TraceHistogramMax: 2, PathProgramHistogramMax: 89, EmptinessCheckTime: 1.1s, AutomataDifference: 366.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67263 SdHoareTripleChecker+Valid, 167.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67263 mSDsluCounter, 347642 SdHoareTripleChecker+Invalid, 141.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8745 IncrementalHoareTripleChecker+Unchecked, 467401 mSDsCounter, 11625 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 445262 IncrementalHoareTripleChecker+Invalid, 465632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11625 mSolverCounterUnsat, 20157 mSDtfsCounter, 445262 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21003 GetRequests, 9015 SyntacticMatches, 1215 SemanticMatches, 10772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229664 ImplicationChecksByTransitivity, 325.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7334occurred in iteration=132, InterpolantAutomatonStates: 6643, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.7s AutomataMinimizationTime, 179 MinimizatonAttempts, 745298 StatesRemovedByMinimization, 175 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 317.0s InterpolantComputationTime, 14357 NumberOfCodeBlocks, 14357 NumberOfCodeBlocksAsserted, 541 NumberOfCheckSat, 20910 ConstructedInterpolants, 229 QuantifiedInterpolants, 497084 SizeOfPredicates, 2617 NumberOfNonLiveVariables, 18029 ConjunctsInSsa, 5852 ConjunctsInUnsatCore, 531 InterpolantComputations, 5 PerfectInterpolantSequences, 91/4729 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