/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/min-fun.wvr.bpl
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a
[2022-02-18 17:20:22,814 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-18 17:20:22,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-18 17:20:22,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-18 17:20:22,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-18 17:20:22,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-18 17:20:22,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-18 17:20:22,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-18 17:20:22,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-18 17:20:22,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-18 17:20:22,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-18 17:20:22,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-18 17:20:22,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-18 17:20:22,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-18 17:20:22,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-18 17:20:22,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-18 17:20:22,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-18 17:20:22,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-18 17:20:22,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-18 17:20:22,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-18 17:20:22,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-18 17:20:22,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-18 17:20:22,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-18 17:20:22,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-18 17:20:22,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-18 17:20:22,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-18 17:20:22,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-18 17:20:22,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-18 17:20:22,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-18 17:20:22,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-18 17:20:22,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-18 17:20:22,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-18 17:20:22,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-18 17:20:22,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-18 17:20:22,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-18 17:20:22,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-18 17:20:22,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-02-18 17:20:22,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-02-18 17:20:22,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-02-18 17:20:22,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-02-18 17:20:22,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-18 17:20:22,913 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
[2022-02-18 17:20:22,929 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-18 17:20:22,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-18 17:20:22,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-18 17:20:22,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-18 17:20:22,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-18 17:20:22,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-18 17:20:22,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-18 17:20:22,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-18 17:20:22,932 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-18 17:20:22,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-18 17:20:22,933 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-18 17:20:22,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-18 17:20:22,933 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-18 17:20:22,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-18 17:20:22,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-18 17:20:22,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-18 17:20:22,935 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-18 17:20:22,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-18 17:20:22,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-18 17:20:22,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2022-02-18 17:20:22,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-18 17:20:22,937 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-18 17:20:23,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-18 17:20:23,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-18 17:20:23,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-18 17:20:23,153 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-18 17:20:23,154 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-18 17:20:23,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl
[2022-02-18 17:20:23,155 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl'
[2022-02-18 17:20:23,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-18 17:20:23,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-18 17:20:23,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-18 17:20:23,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-18 17:20:23,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-18 17:20:23,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,198 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-18 17:20:23,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-18 17:20:23,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-18 17:20:23,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-18 17:20:23,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-18 17:20:23,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-18 17:20:23,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-18 17:20:23,225 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-18 17:20:23,225 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-18 17:20:23,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/1) ...
[2022-02-18 17:20:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-18 17:20:23,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:23,260 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)
[2022-02-18 17:20:23,280 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
[2022-02-18 17:20:23,298 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2022-02-18 17:20:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2022-02-18 17:20:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2022-02-18 17:20:23,298 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2022-02-18 17:20:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2022-02-18 17:20:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2022-02-18 17:20:23,298 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2022-02-18 17:20:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-18 17:20:23,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-18 17:20:23,299 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2022-02-18 17:20:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2022-02-18 17:20:23,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2022-02-18 17:20:23,299 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-18 17:20:23,335 INFO L234 CfgBuilder]: Building ICFG
[2022-02-18 17:20:23,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-18 17:20:23,416 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-18 17:20:23,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-18 17:20:23,429 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-18 17:20:23,431 INFO L202 PluginConnector]: Adding new model min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:20:23 BoogieIcfgContainer
[2022-02-18 17:20:23,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-18 17:20:23,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-18 17:20:23,443 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-18 17:20:23,457 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-18 17:20:23,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 05:20:23" (1/2) ...
[2022-02-18 17:20:23,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74909bf2 and model type min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:20:23, skipping insertion in model container
[2022-02-18 17:20:23,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:20:23" (2/2) ...
[2022-02-18 17:20:23,460 INFO L111 eAbstractionObserver]: Analyzing ICFG min-fun.wvr.bpl
[2022-02-18 17:20:23,463 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-18 17:20:23,464 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-18 17:20:23,464 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-18 17:20:23,464 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-18 17:20:23,523 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2022-02-18 17:20:23,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-18 17:20:23,586 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true
[2022-02-18 17:20:23,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2022-02-18 17:20:23,594 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow
[2022-02-18 17:20:23,627 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-02-18 17:20:23,637 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:23,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:23,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 541406590, now seen corresponding path program 1 times
[2022-02-18 17:20:23,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:23,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959785137]
[2022-02-18 17:20:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:23,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:23,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959785137]
[2022-02-18 17:20:23,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959785137] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-18 17:20:23,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-18 17:20:23,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-18 17:20:23,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031434189]
[2022-02-18 17:20:23,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-18 17:20:23,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-18 17:20:23,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-18 17:20:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-18 17:20:23,812 INFO L87 Difference]: Start difference. First operand has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:23,867 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions.
[2022-02-18 17:20:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-18 17:20:23,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2022-02-18 17:20:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:23,882 INFO L225 Difference]: With dead ends: 217
[2022-02-18 17:20:23,882 INFO L226 Difference]: Without dead ends: 202
[2022-02-18 17:20:23,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-18 17:20:23,886 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:23,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-18 17:20:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states.
[2022-02-18 17:20:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149.
[2022-02-18 17:20:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions.
[2022-02-18 17:20:23,955 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18
[2022-02-18 17:20:23,955 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:23,956 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions.
[2022-02-18 17:20:23,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:23,956 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions.
[2022-02-18 17:20:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-02-18 17:20:23,958 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:23,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:23,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-18 17:20:23,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1033477442, now seen corresponding path program 1 times
[2022-02-18 17:20:23,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:23,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752872693]
[2022-02-18 17:20:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:24,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:24,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752872693]
[2022-02-18 17:20:24,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752872693] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-18 17:20:24,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-18 17:20:24,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-18 17:20:24,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853834030]
[2022-02-18 17:20:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-18 17:20:24,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-18 17:20:24,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-18 17:20:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-18 17:20:24,027 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:24,109 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions.
[2022-02-18 17:20:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-18 17:20:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2022-02-18 17:20:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:24,111 INFO L225 Difference]: With dead ends: 158
[2022-02-18 17:20:24,111 INFO L226 Difference]: Without dead ends: 158
[2022-02-18 17:20:24,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-18 17:20:24,116 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:24,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2022-02-18 17:20:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133.
[2022-02-18 17:20:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions.
[2022-02-18 17:20:24,130 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20
[2022-02-18 17:20:24,130 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:24,130 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions.
[2022-02-18 17:20:24,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions.
[2022-02-18 17:20:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-02-18 17:20:24,139 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:24,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:24,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-18 17:20:24,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash -324870244, now seen corresponding path program 1 times
[2022-02-18 17:20:24,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:24,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043483026]
[2022-02-18 17:20:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:24,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:24,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:24,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043483026]
[2022-02-18 17:20:24,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043483026] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-18 17:20:24,216 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-18 17:20:24,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-18 17:20:24,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439710049]
[2022-02-18 17:20:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-18 17:20:24,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-18 17:20:24,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-18 17:20:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-02-18 17:20:24,218 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:24,279 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions.
[2022-02-18 17:20:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-18 17:20:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2022-02-18 17:20:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:24,281 INFO L225 Difference]: With dead ends: 183
[2022-02-18 17:20:24,281 INFO L226 Difference]: Without dead ends: 183
[2022-02-18 17:20:24,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-02-18 17:20:24,282 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:24,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 13 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-18 17:20:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2022-02-18 17:20:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158.
[2022-02-18 17:20:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions.
[2022-02-18 17:20:24,301 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20
[2022-02-18 17:20:24,301 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions.
[2022-02-18 17:20:24,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions.
[2022-02-18 17:20:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:24,302 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:24,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:24,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-18 17:20:24,304 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1959936804, now seen corresponding path program 1 times
[2022-02-18 17:20:24,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:24,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793663002]
[2022-02-18 17:20:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:24,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:24,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793663002]
[2022-02-18 17:20:24,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793663002] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:24,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197662948]
[2022-02-18 17:20:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:24,703 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)
[2022-02-18 17:20:24,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-18 17:20:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-18 17:20:24,768 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:25,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34
[2022-02-18 17:20:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:25,369 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:25,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:25,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 67
[2022-02-18 17:20:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:26,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197662948] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:26,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:26,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:20:26,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717893877]
[2022-02-18 17:20:26,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:26,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-02-18 17:20:26,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-02-18 17:20:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306
[2022-02-18 17:20:26,243 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:26,618 INFO L93 Difference]: Finished difference Result 366 states and 1043 transitions.
[2022-02-18 17:20:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2022-02-18 17:20:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2022-02-18 17:20:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:26,621 INFO L225 Difference]: With dead ends: 366
[2022-02-18 17:20:26,622 INFO L226 Difference]: Without dead ends: 351
[2022-02-18 17:20:26,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552
[2022-02-18 17:20:26,623 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 201 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:26,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 55 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states.
[2022-02-18 17:20:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 224.
[2022-02-18 17:20:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions.
[2022-02-18 17:20:26,638 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22
[2022-02-18 17:20:26,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:26,638 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions.
[2022-02-18 17:20:26,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions.
[2022-02-18 17:20:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:26,640 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:26,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:26,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:26,855 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
[2022-02-18 17:20:26,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2127745896, now seen corresponding path program 2 times
[2022-02-18 17:20:26,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:26,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372601651]
[2022-02-18 17:20:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:27,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:27,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372601651]
[2022-02-18 17:20:27,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372601651] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:27,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792033550]
[2022-02-18 17:20:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:20:27,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:27,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:27,101 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)
[2022-02-18 17:20:27,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-18 17:20:27,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:20:27,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-18 17:20:27,137 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:27,410 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:27,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41
[2022-02-18 17:20:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:27,760 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:28,091 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:28,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 67
[2022-02-18 17:20:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:28,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792033550] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:28,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:28,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19
[2022-02-18 17:20:28,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623583470]
[2022-02-18 17:20:28,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:28,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-02-18 17:20:28,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-02-18 17:20:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380
[2022-02-18 17:20:28,463 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:29,461 INFO L93 Difference]: Finished difference Result 478 states and 1385 transitions.
[2022-02-18 17:20:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-02-18 17:20:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2022-02-18 17:20:29,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:29,465 INFO L225 Difference]: With dead ends: 478
[2022-02-18 17:20:29,465 INFO L226 Difference]: Without dead ends: 463
[2022-02-18 17:20:29,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992
[2022-02-18 17:20:29,466 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 286 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:29,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 125 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:20:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states.
[2022-02-18 17:20:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 229.
[2022-02-18 17:20:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions.
[2022-02-18 17:20:29,478 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22
[2022-02-18 17:20:29,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:29,478 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions.
[2022-02-18 17:20:29,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions.
[2022-02-18 17:20:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:29,480 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:29,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:29,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-02-18 17:20:29,680 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
[2022-02-18 17:20:29,681 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:29,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1828972448, now seen corresponding path program 3 times
[2022-02-18 17:20:29,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:29,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554964055]
[2022-02-18 17:20:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:29,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:29,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:29,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554964055]
[2022-02-18 17:20:29,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554964055] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:29,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107957188]
[2022-02-18 17:20:29,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:20:29,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:29,900 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)
[2022-02-18 17:20:29,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-18 17:20:29,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-02-18 17:20:29,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:29,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-02-18 17:20:29,933 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:30,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33
[2022-02-18 17:20:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:30,273 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:30,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:30,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 67
[2022-02-18 17:20:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:30,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107957188] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:30,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:30,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2022-02-18 17:20:30,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608476394]
[2022-02-18 17:20:30,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:30,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:20:30,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:20:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:30,813 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:31,316 INFO L93 Difference]: Finished difference Result 433 states and 1240 transitions.
[2022-02-18 17:20:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-02-18 17:20:31,317 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2022-02-18 17:20:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:31,319 INFO L225 Difference]: With dead ends: 433
[2022-02-18 17:20:31,319 INFO L226 Difference]: Without dead ends: 418
[2022-02-18 17:20:31,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:20:31,320 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 99 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:31,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 132 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states.
[2022-02-18 17:20:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 241.
[2022-02-18 17:20:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions.
[2022-02-18 17:20:31,334 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22
[2022-02-18 17:20:31,334 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:31,334 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions.
[2022-02-18 17:20:31,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions.
[2022-02-18 17:20:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:31,335 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:31,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:31,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:31,558 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
[2022-02-18 17:20:31,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash -258146848, now seen corresponding path program 4 times
[2022-02-18 17:20:31,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:31,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042536280]
[2022-02-18 17:20:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:31,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:31,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:31,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042536280]
[2022-02-18 17:20:31,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042536280] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:31,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6612623]
[2022-02-18 17:20:31,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:20:31,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:31,779 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)
[2022-02-18 17:20:31,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-18 17:20:31,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:20:31,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:31,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-18 17:20:31,804 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:31,997 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:31,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41
[2022-02-18 17:20:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:32,300 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:32,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:32,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select 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 67
[2022-02-18 17:20:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:32,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6612623] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:32,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:32,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:20:32,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129616093]
[2022-02-18 17:20:32,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:32,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-02-18 17:20:32,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-02-18 17:20:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306
[2022-02-18 17:20:32,790 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 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)
[2022-02-18 17:20:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:33,121 INFO L93 Difference]: Finished difference Result 374 states and 1089 transitions.
[2022-02-18 17:20:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-02-18 17:20:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 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 22
[2022-02-18 17:20:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:33,123 INFO L225 Difference]: With dead ends: 374
[2022-02-18 17:20:33,124 INFO L226 Difference]: Without dead ends: 359
[2022-02-18 17:20:33,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506
[2022-02-18 17:20:33,125 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 96 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:33,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 118 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 278 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time]
[2022-02-18 17:20:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states.
[2022-02-18 17:20:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 245.
[2022-02-18 17:20:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.9262295081967213) internal successors, (714), 244 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 714 transitions.
[2022-02-18 17:20:33,133 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 714 transitions. Word has length 22
[2022-02-18 17:20:33,133 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:33,133 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 714 transitions.
[2022-02-18 17:20:33,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 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)
[2022-02-18 17:20:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 714 transitions.
[2022-02-18 17:20:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:33,134 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:33,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:33,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:33,347 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
[2022-02-18 17:20:33,347 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1789401154, now seen corresponding path program 5 times
[2022-02-18 17:20:33,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:33,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038486836]
[2022-02-18 17:20:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:33,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:33,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038486836]
[2022-02-18 17:20:33,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038486836] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:33,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131513715]
[2022-02-18 17:20:33,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:20:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:33,547 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)
[2022-02-18 17:20:33,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-02-18 17:20:33,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:20:33,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:33,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-02-18 17:20:33,574 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:33,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:33,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41
[2022-02-18 17:20:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:33,991 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:34,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:34,203 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 73 treesize of output 67
[2022-02-18 17:20:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:34,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131513715] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:34,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:34,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2022-02-18 17:20:34,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149367023]
[2022-02-18 17:20:34,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:34,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-18 17:20:34,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-18 17:20:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272
[2022-02-18 17:20:34,468 INFO L87 Difference]: Start difference. First operand 245 states and 714 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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)
[2022-02-18 17:20:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:35,579 INFO L93 Difference]: Finished difference Result 659 states and 1889 transitions.
[2022-02-18 17:20:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-02-18 17:20:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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 22
[2022-02-18 17:20:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:35,583 INFO L225 Difference]: With dead ends: 659
[2022-02-18 17:20:35,583 INFO L226 Difference]: Without dead ends: 644
[2022-02-18 17:20:35,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870
[2022-02-18 17:20:35,584 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 161 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:35,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 231 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:20:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states.
[2022-02-18 17:20:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 247.
[2022-02-18 17:20:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions.
[2022-02-18 17:20:35,594 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22
[2022-02-18 17:20:35,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:35,594 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions.
[2022-02-18 17:20:35,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 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)
[2022-02-18 17:20:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions.
[2022-02-18 17:20:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-18 17:20:35,596 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:35,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:35,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:35,811 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
[2022-02-18 17:20:35,812 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1248888004, now seen corresponding path program 6 times
[2022-02-18 17:20:35,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:35,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688097751]
[2022-02-18 17:20:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:35,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:35,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688097751]
[2022-02-18 17:20:35,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688097751] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:35,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344847598]
[2022-02-18 17:20:35,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:20:35,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:35,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:35,987 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)
[2022-02-18 17:20:35,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-02-18 17:20:36,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2022-02-18 17:20:36,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:36,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-02-18 17:20:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:36,259 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:20:36,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33
[2022-02-18 17:20:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:36,379 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:36,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:20:36,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 67
[2022-02-18 17:20:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:36,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344847598] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:36,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:36,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17
[2022-02-18 17:20:36,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144799182]
[2022-02-18 17:20:36,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:36,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-02-18 17:20:36,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-02-18 17:20:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2022-02-18 17:20:36,949 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:37,963 INFO L93 Difference]: Finished difference Result 489 states and 1408 transitions.
[2022-02-18 17:20:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-02-18 17:20:37,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have 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
[2022-02-18 17:20:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:37,970 INFO L225 Difference]: With dead ends: 489
[2022-02-18 17:20:37,970 INFO L226 Difference]: Without dead ends: 474
[2022-02-18 17:20:37,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930
[2022-02-18 17:20:37,971 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:37,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 224 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 605 Invalid, 0 Unknown, 38 Unchecked, 0.4s Time]
[2022-02-18 17:20:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states.
[2022-02-18 17:20:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 247.
[2022-02-18 17:20:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions.
[2022-02-18 17:20:37,980 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22
[2022-02-18 17:20:37,981 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:37,981 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions.
[2022-02-18 17:20:37,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions.
[2022-02-18 17:20:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:37,983 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:37,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:38,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2022-02-18 17:20:38,207 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
[2022-02-18 17:20:38,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 976010682, now seen corresponding path program 7 times
[2022-02-18 17:20:38,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:38,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167111360]
[2022-02-18 17:20:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:38,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:38,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:38,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167111360]
[2022-02-18 17:20:38,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167111360] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:38,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021935184]
[2022-02-18 17:20:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:20:38,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:38,268 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)
[2022-02-18 17:20:38,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-02-18 17:20:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:38,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:38,306 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:38,432 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:38,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021935184] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:38,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:38,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2022-02-18 17:20:38,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104355860]
[2022-02-18 17:20:38,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:38,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-18 17:20:38,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-18 17:20:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2022-02-18 17:20:38,521 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:39,406 INFO L93 Difference]: Finished difference Result 1099 states and 3110 transitions.
[2022-02-18 17:20:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2022-02-18 17:20:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:39,412 INFO L225 Difference]: With dead ends: 1099
[2022-02-18 17:20:39,413 INFO L226 Difference]: Without dead ends: 1099
[2022-02-18 17:20:39,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=714, Invalid=2148, Unknown=0, NotChecked=0, Total=2862
[2022-02-18 17:20:39,414 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 277 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:39,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 202 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:20:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states.
[2022-02-18 17:20:39,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 311.
[2022-02-18 17:20:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 3.141935483870968) internal successors, (974), 310 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 974 transitions.
[2022-02-18 17:20:39,428 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 974 transitions. Word has length 24
[2022-02-18 17:20:39,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:39,428 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 974 transitions.
[2022-02-18 17:20:39,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 974 transitions.
[2022-02-18 17:20:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:39,429 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:39,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:39,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:39,639 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
[2022-02-18 17:20:39,640 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash -308162, now seen corresponding path program 8 times
[2022-02-18 17:20:39,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:39,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938327894]
[2022-02-18 17:20:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:39,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:39,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938327894]
[2022-02-18 17:20:39,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938327894] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:39,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939054291]
[2022-02-18 17:20:39,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:20:39,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:39,695 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)
[2022-02-18 17:20:39,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-02-18 17:20:39,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:20:39,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:39,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:39,732 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:39,828 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:39,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939054291] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:39,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:39,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:20:39,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361048663]
[2022-02-18 17:20:39,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:39,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-18 17:20:39,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-18 17:20:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2022-02-18 17:20:39,934 INFO L87 Difference]: Start difference. First operand 311 states and 974 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:41,742 INFO L93 Difference]: Finished difference Result 1794 states and 5013 transitions.
[2022-02-18 17:20:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states.
[2022-02-18 17:20:41,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:41,750 INFO L225 Difference]: With dead ends: 1794
[2022-02-18 17:20:41,750 INFO L226 Difference]: Without dead ends: 1794
[2022-02-18 17:20:41,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4272 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2378, Invalid=8752, Unknown=0, NotChecked=0, Total=11130
[2022-02-18 17:20:41,754 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 460 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:41,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 303 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-02-18 17:20:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states.
[2022-02-18 17:20:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 315.
[2022-02-18 17:20:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 3.1656050955414012) internal successors, (994), 314 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 994 transitions.
[2022-02-18 17:20:41,773 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 994 transitions. Word has length 24
[2022-02-18 17:20:41,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:41,774 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 994 transitions.
[2022-02-18 17:20:41,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 994 transitions.
[2022-02-18 17:20:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:41,775 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:41,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:41,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:41,997 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
[2022-02-18 17:20:41,997 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash 566643918, now seen corresponding path program 9 times
[2022-02-18 17:20:41,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:41,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395549193]
[2022-02-18 17:20:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:42,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:42,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395549193]
[2022-02-18 17:20:42,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395549193] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:42,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676280460]
[2022-02-18 17:20:42,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:20:42,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:42,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:42,043 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)
[2022-02-18 17:20:42,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-02-18 17:20:42,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:20:42,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:42,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:42,178 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:42,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676280460] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:42,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:42,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:20:42,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323005569]
[2022-02-18 17:20:42,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:42,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-18 17:20:42,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-18 17:20:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272
[2022-02-18 17:20:42,283 INFO L87 Difference]: Start difference. First operand 315 states and 994 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:43,189 INFO L93 Difference]: Finished difference Result 1470 states and 4126 transitions.
[2022-02-18 17:20:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-02-18 17:20:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:43,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:43,198 INFO L225 Difference]: With dead ends: 1470
[2022-02-18 17:20:43,198 INFO L226 Difference]: Without dead ends: 1470
[2022-02-18 17:20:43,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1095, Invalid=3327, Unknown=0, NotChecked=0, Total=4422
[2022-02-18 17:20:43,200 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 338 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:43,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 252 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:20:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states.
[2022-02-18 17:20:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 306.
[2022-02-18 17:20:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1475409836065573) internal successors, (960), 305 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 960 transitions.
[2022-02-18 17:20:43,226 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 960 transitions. Word has length 24
[2022-02-18 17:20:43,226 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 960 transitions.
[2022-02-18 17:20:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 960 transitions.
[2022-02-18 17:20:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:43,227 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:43,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:43,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:43,449 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
[2022-02-18 17:20:43,450 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1502782590, now seen corresponding path program 1 times
[2022-02-18 17:20:43,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:43,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067149860]
[2022-02-18 17:20:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:43,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:43,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:43,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067149860]
[2022-02-18 17:20:43,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067149860] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:43,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017358068]
[2022-02-18 17:20:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:43,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:43,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:43,488 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)
[2022-02-18 17:20:43,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-02-18 17:20:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:43,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-02-18 17:20:43,522 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:43,584 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:43,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017358068] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:43,663 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:43,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10
[2022-02-18 17:20:43,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193177328]
[2022-02-18 17:20:43,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:43,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-18 17:20:43,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-18 17:20:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2022-02-18 17:20:43,664 INFO L87 Difference]: Start difference. First operand 306 states and 960 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:43,798 INFO L93 Difference]: Finished difference Result 685 states and 2024 transitions.
[2022-02-18 17:20:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-02-18 17:20:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:43,801 INFO L225 Difference]: With dead ends: 685
[2022-02-18 17:20:43,801 INFO L226 Difference]: Without dead ends: 679
[2022-02-18 17:20:43,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:43,802 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 147 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:43,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 42 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states.
[2022-02-18 17:20:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 429.
[2022-02-18 17:20:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.2406542056074765) internal successors, (1387), 428 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1387 transitions.
[2022-02-18 17:20:43,814 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1387 transitions. Word has length 24
[2022-02-18 17:20:43,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:43,814 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1387 transitions.
[2022-02-18 17:20:43,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1387 transitions.
[2022-02-18 17:20:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:43,816 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:43,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:43,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:44,035 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
[2022-02-18 17:20:44,035 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:44,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1065813882, now seen corresponding path program 10 times
[2022-02-18 17:20:44,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:44,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44915137]
[2022-02-18 17:20:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:44,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:44,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44915137]
[2022-02-18 17:20:44,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44915137] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:44,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498394544]
[2022-02-18 17:20:44,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:20:44,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:44,085 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)
[2022-02-18 17:20:44,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-02-18 17:20:44,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:20:44,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:44,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:44,117 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:44,209 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:44,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498394544] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:44,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:44,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14
[2022-02-18 17:20:44,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453207670]
[2022-02-18 17:20:44,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:44,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-18 17:20:44,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-18 17:20:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2022-02-18 17:20:44,272 INFO L87 Difference]: Start difference. First operand 429 states and 1387 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:44,607 INFO L93 Difference]: Finished difference Result 1159 states and 3490 transitions.
[2022-02-18 17:20:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2022-02-18 17:20:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:44,613 INFO L225 Difference]: With dead ends: 1159
[2022-02-18 17:20:44,613 INFO L226 Difference]: Without dead ends: 1111
[2022-02-18 17:20:44,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930
[2022-02-18 17:20:44,614 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 276 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:44,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 103 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states.
[2022-02-18 17:20:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 639.
[2022-02-18 17:20:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 3.3448275862068964) internal successors, (2134), 638 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 2134 transitions.
[2022-02-18 17:20:44,635 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 2134 transitions. Word has length 24
[2022-02-18 17:20:44,635 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:44,635 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 2134 transitions.
[2022-02-18 17:20:44,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 2134 transitions.
[2022-02-18 17:20:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:44,637 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:44,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:44,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:44,860 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
[2022-02-18 17:20:44,860 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash 359856550, now seen corresponding path program 2 times
[2022-02-18 17:20:44,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:44,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318253976]
[2022-02-18 17:20:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:44,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:44,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318253976]
[2022-02-18 17:20:44,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318253976] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:44,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372754732]
[2022-02-18 17:20:44,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:20:44,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:44,892 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)
[2022-02-18 17:20:44,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2022-02-18 17:20:44,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:20:44,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:44,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-02-18 17:20:44,927 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:44,999 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:45,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372754732] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:45,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:45,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10
[2022-02-18 17:20:45,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666642903]
[2022-02-18 17:20:45,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:45,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-18 17:20:45,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-18 17:20:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2022-02-18 17:20:45,069 INFO L87 Difference]: Start difference. First operand 639 states and 2134 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:45,298 INFO L93 Difference]: Finished difference Result 1267 states and 3847 transitions.
[2022-02-18 17:20:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-02-18 17:20:45,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:45,303 INFO L225 Difference]: With dead ends: 1267
[2022-02-18 17:20:45,303 INFO L226 Difference]: Without dead ends: 1267
[2022-02-18 17:20:45,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380
[2022-02-18 17:20:45,304 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 183 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:45,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 78 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states.
[2022-02-18 17:20:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 683.
[2022-02-18 17:20:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 3.3167155425219943) internal successors, (2262), 682 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2262 transitions.
[2022-02-18 17:20:45,331 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2262 transitions. Word has length 24
[2022-02-18 17:20:45,331 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:45,331 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 2262 transitions.
[2022-02-18 17:20:45,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2262 transitions.
[2022-02-18 17:20:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:45,333 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:45,333 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:45,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:45,555 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
[2022-02-18 17:20:45,555 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:45,556 INFO L85 PathProgramCache]: Analyzing trace with hash -986825016, now seen corresponding path program 11 times
[2022-02-18 17:20:45,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:45,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832840863]
[2022-02-18 17:20:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:45,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:45,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:45,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832840863]
[2022-02-18 17:20:45,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832840863] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:45,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875982079]
[2022-02-18 17:20:45,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:20:45,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:45,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:45,605 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)
[2022-02-18 17:20:45,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2022-02-18 17:20:45,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:20:45,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:45,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:45,628 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:45,700 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:45,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875982079] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:45,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:45,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:20:45,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063523513]
[2022-02-18 17:20:45,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:45,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:20:45,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:20:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:20:45,774 INFO L87 Difference]: Start difference. First operand 683 states and 2262 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:46,304 INFO L93 Difference]: Finished difference Result 2268 states and 6749 transitions.
[2022-02-18 17:20:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2022-02-18 17:20:46,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:46,313 INFO L225 Difference]: With dead ends: 2268
[2022-02-18 17:20:46,313 INFO L226 Difference]: Without dead ends: 2268
[2022-02-18 17:20:46,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806
[2022-02-18 17:20:46,314 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 259 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:46,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 150 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:20:46,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states.
[2022-02-18 17:20:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 699.
[2022-02-18 17:20:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 3.312320916905444) internal successors, (2312), 698 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 2312 transitions.
[2022-02-18 17:20:46,342 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 2312 transitions. Word has length 24
[2022-02-18 17:20:46,342 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:46,342 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 2312 transitions.
[2022-02-18 17:20:46,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 2312 transitions.
[2022-02-18 17:20:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:46,344 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:46,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:46,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:46,559 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
[2022-02-18 17:20:46,559 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -201910922, now seen corresponding path program 12 times
[2022-02-18 17:20:46,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:46,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087602444]
[2022-02-18 17:20:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:46,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:46,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087602444]
[2022-02-18 17:20:46,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087602444] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:46,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401547324]
[2022-02-18 17:20:46,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:20:46,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:46,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:46,600 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)
[2022-02-18 17:20:46,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2022-02-18 17:20:46,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2022-02-18 17:20:46,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:46,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:46,622 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:46,690 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:46,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401547324] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:46,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:46,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:20:46,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507229153]
[2022-02-18 17:20:46,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:46,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:20:46,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:46,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:20:46,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:20:46,761 INFO L87 Difference]: Start difference. First operand 699 states and 2312 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:47,367 INFO L93 Difference]: Finished difference Result 2256 states and 6789 transitions.
[2022-02-18 17:20:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-02-18 17:20:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:47,377 INFO L225 Difference]: With dead ends: 2256
[2022-02-18 17:20:47,378 INFO L226 Difference]: Without dead ends: 2256
[2022-02-18 17:20:47,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652
[2022-02-18 17:20:47,379 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 300 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:47,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 141 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states.
[2022-02-18 17:20:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 775.
[2022-02-18 17:20:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.289405684754522) internal successors, (2546), 774 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2546 transitions.
[2022-02-18 17:20:47,410 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2546 transitions. Word has length 24
[2022-02-18 17:20:47,410 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:47,410 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2546 transitions.
[2022-02-18 17:20:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2546 transitions.
[2022-02-18 17:20:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:47,412 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:47,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:47,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2022-02-18 17:20:47,635 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
[2022-02-18 17:20:47,635 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 186144540, now seen corresponding path program 13 times
[2022-02-18 17:20:47,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:47,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975914912]
[2022-02-18 17:20:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:47,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:47,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975914912]
[2022-02-18 17:20:47,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975914912] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:47,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176191098]
[2022-02-18 17:20:47,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:20:47,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:47,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:47,675 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)
[2022-02-18 17:20:47,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2022-02-18 17:20:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:47,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:47,698 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:47,783 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:47,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176191098] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:47,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:47,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13
[2022-02-18 17:20:47,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510057837]
[2022-02-18 17:20:47,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:47,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-02-18 17:20:47,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-02-18 17:20:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2022-02-18 17:20:47,829 INFO L87 Difference]: Start difference. First operand 775 states and 2546 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:48,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:48,084 INFO L93 Difference]: Finished difference Result 1611 states and 5005 transitions.
[2022-02-18 17:20:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-02-18 17:20:48,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:48,092 INFO L225 Difference]: With dead ends: 1611
[2022-02-18 17:20:48,092 INFO L226 Difference]: Without dead ends: 1611
[2022-02-18 17:20:48,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:20:48,093 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 258 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:48,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states.
[2022-02-18 17:20:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 926.
[2022-02-18 17:20:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 3.370810810810811) internal successors, (3118), 925 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 3118 transitions.
[2022-02-18 17:20:48,135 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 3118 transitions. Word has length 24
[2022-02-18 17:20:48,135 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 3118 transitions.
[2022-02-18 17:20:48,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 3118 transitions.
[2022-02-18 17:20:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:48,138 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:48,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:48,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:48,355 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
[2022-02-18 17:20:48,355 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:48,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:48,356 INFO L85 PathProgramCache]: Analyzing trace with hash -246732064, now seen corresponding path program 14 times
[2022-02-18 17:20:48,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:48,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518369984]
[2022-02-18 17:20:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:48,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:48,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:48,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518369984]
[2022-02-18 17:20:48,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518369984] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:48,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77192631]
[2022-02-18 17:20:48,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:20:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:48,409 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)
[2022-02-18 17:20:48,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2022-02-18 17:20:48,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:20:48,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:48,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:48,432 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:48,493 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:48,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77192631] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:48,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:48,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:20:48,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001957285]
[2022-02-18 17:20:48,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:48,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:20:48,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:20:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:20:48,558 INFO L87 Difference]: Start difference. First operand 926 states and 3118 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:49,044 INFO L93 Difference]: Finished difference Result 2408 states and 7521 transitions.
[2022-02-18 17:20:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-02-18 17:20:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:49,051 INFO L225 Difference]: With dead ends: 2408
[2022-02-18 17:20:49,051 INFO L226 Difference]: Without dead ends: 2404
[2022-02-18 17:20:49,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892
[2022-02-18 17:20:49,052 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 271 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:49,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 151 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states.
[2022-02-18 17:20:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 934.
[2022-02-18 17:20:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 3.356913183279743) internal successors, (3132), 933 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 3132 transitions.
[2022-02-18 17:20:49,084 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 3132 transitions. Word has length 24
[2022-02-18 17:20:49,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:49,085 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 3132 transitions.
[2022-02-18 17:20:49,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 3132 transitions.
[2022-02-18 17:20:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:49,087 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:49,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:49,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:49,303 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
[2022-02-18 17:20:49,303 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -112101728, now seen corresponding path program 15 times
[2022-02-18 17:20:49,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:49,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645263052]
[2022-02-18 17:20:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:49,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:49,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645263052]
[2022-02-18 17:20:49,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645263052] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:49,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818137625]
[2022-02-18 17:20:49,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:20:49,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:49,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:49,346 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)
[2022-02-18 17:20:49,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2022-02-18 17:20:49,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-02-18 17:20:49,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:49,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:49,464 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:49,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818137625] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:49,543 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:49,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:20:49,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428447308]
[2022-02-18 17:20:49,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:49,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:20:49,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:20:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:49,544 INFO L87 Difference]: Start difference. First operand 934 states and 3132 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:50,502 INFO L93 Difference]: Finished difference Result 3509 states and 10311 transitions.
[2022-02-18 17:20:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-02-18 17:20:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:50,511 INFO L225 Difference]: With dead ends: 3509
[2022-02-18 17:20:50,511 INFO L226 Difference]: Without dead ends: 3509
[2022-02-18 17:20:50,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290
[2022-02-18 17:20:50,512 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 408 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:50,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 270 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:20:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states.
[2022-02-18 17:20:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 985.
[2022-02-18 17:20:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 3.399390243902439) internal successors, (3345), 984 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 3345 transitions.
[2022-02-18 17:20:50,554 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 3345 transitions. Word has length 24
[2022-02-18 17:20:50,554 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 3345 transitions.
[2022-02-18 17:20:50,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 3345 transitions.
[2022-02-18 17:20:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:50,557 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:50,557 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:50,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:50,767 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
[2022-02-18 17:20:50,767 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1530937426, now seen corresponding path program 16 times
[2022-02-18 17:20:50,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:50,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417967959]
[2022-02-18 17:20:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:50,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:50,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417967959]
[2022-02-18 17:20:50,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417967959] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:50,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030285861]
[2022-02-18 17:20:50,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:20:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:50,818 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)
[2022-02-18 17:20:50,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2022-02-18 17:20:50,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:20:50,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:50,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:50,842 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:50,928 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:51,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030285861] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:51,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:51,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:20:51,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880817445]
[2022-02-18 17:20:51,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:51,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:20:51,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:20:51,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:51,033 INFO L87 Difference]: Start difference. First operand 985 states and 3345 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:52,325 INFO L93 Difference]: Finished difference Result 3211 states and 9686 transitions.
[2022-02-18 17:20:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2022-02-18 17:20:52,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:52,334 INFO L225 Difference]: With dead ends: 3211
[2022-02-18 17:20:52,334 INFO L226 Difference]: Without dead ends: 3207
[2022-02-18 17:20:52,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1498, Invalid=5144, Unknown=0, NotChecked=0, Total=6642
[2022-02-18 17:20:52,337 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 473 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:52,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 262 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-18 17:20:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states.
[2022-02-18 17:20:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 985.
[2022-02-18 17:20:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 3.397357723577236) internal successors, (3343), 984 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 3343 transitions.
[2022-02-18 17:20:52,395 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 3343 transitions. Word has length 24
[2022-02-18 17:20:52,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:52,395 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 3343 transitions.
[2022-02-18 17:20:52,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 3343 transitions.
[2022-02-18 17:20:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:52,398 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:52,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:52,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:52,611 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
[2022-02-18 17:20:52,611 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 618651874, now seen corresponding path program 3 times
[2022-02-18 17:20:52,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:52,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486005742]
[2022-02-18 17:20:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:52,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:52,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486005742]
[2022-02-18 17:20:52,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486005742] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:52,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404036715]
[2022-02-18 17:20:52,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:20:52,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:52,653 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)
[2022-02-18 17:20:52,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2022-02-18 17:20:52,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-02-18 17:20:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:52,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-02-18 17:20:52,676 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:52,729 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:52,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404036715] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:52,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:52,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9
[2022-02-18 17:20:52,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155808136]
[2022-02-18 17:20:52,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:52,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-02-18 17:20:52,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-02-18 17:20:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2022-02-18 17:20:52,785 INFO L87 Difference]: Start difference. First operand 985 states and 3343 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:52,913 INFO L93 Difference]: Finished difference Result 1333 states and 4297 transitions.
[2022-02-18 17:20:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-02-18 17:20:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:52,916 INFO L225 Difference]: With dead ends: 1333
[2022-02-18 17:20:52,916 INFO L226 Difference]: Without dead ends: 1333
[2022-02-18 17:20:52,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210
[2022-02-18 17:20:52,917 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 92 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:52,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 66 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states.
[2022-02-18 17:20:52,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 937.
[2022-02-18 17:20:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 3.378205128205128) internal successors, (3162), 936 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 3162 transitions.
[2022-02-18 17:20:52,936 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 3162 transitions. Word has length 24
[2022-02-18 17:20:52,936 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:52,936 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 3162 transitions.
[2022-02-18 17:20:52,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 3162 transitions.
[2022-02-18 17:20:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:52,938 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:52,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:52,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:53,158 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
[2022-02-18 17:20:53,158 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1548851618, now seen corresponding path program 17 times
[2022-02-18 17:20:53,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:53,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067149826]
[2022-02-18 17:20:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:53,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:53,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067149826]
[2022-02-18 17:20:53,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067149826] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:53,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098622531]
[2022-02-18 17:20:53,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:20:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:53,203 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)
[2022-02-18 17:20:53,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2022-02-18 17:20:53,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:20:53,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:53,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:53,242 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:53,302 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:53,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098622531] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:53,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:53,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11
[2022-02-18 17:20:53,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114584845]
[2022-02-18 17:20:53,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:53,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-02-18 17:20:53,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-02-18 17:20:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2022-02-18 17:20:53,363 INFO L87 Difference]: Start difference. First operand 937 states and 3162 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:53,719 INFO L93 Difference]: Finished difference Result 2129 states and 6669 transitions.
[2022-02-18 17:20:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2022-02-18 17:20:53,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:53,725 INFO L225 Difference]: With dead ends: 2129
[2022-02-18 17:20:53,725 INFO L226 Difference]: Without dead ends: 2129
[2022-02-18 17:20:53,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056
[2022-02-18 17:20:53,726 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 171 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:53,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 143 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states.
[2022-02-18 17:20:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1003.
[2022-02-18 17:20:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 3.3642714570858283) internal successors, (3371), 1002 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 3371 transitions.
[2022-02-18 17:20:53,756 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 3371 transitions. Word has length 24
[2022-02-18 17:20:53,756 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:53,756 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 3371 transitions.
[2022-02-18 17:20:53,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 3371 transitions.
[2022-02-18 17:20:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:53,759 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:53,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:53,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:53,971 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
[2022-02-18 17:20:53,972 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -843436226, now seen corresponding path program 18 times
[2022-02-18 17:20:53,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:53,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336527464]
[2022-02-18 17:20:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:54,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:54,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336527464]
[2022-02-18 17:20:54,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336527464] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:54,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573310034]
[2022-02-18 17:20:54,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:20:54,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:54,009 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)
[2022-02-18 17:20:54,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2022-02-18 17:20:54,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:20:54,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:54,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:54,033 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:54,101 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:54,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573310034] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:54,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:54,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10
[2022-02-18 17:20:54,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982083610]
[2022-02-18 17:20:54,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:54,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-18 17:20:54,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-18 17:20:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2022-02-18 17:20:54,160 INFO L87 Difference]: Start difference. First operand 1003 states and 3371 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:54,532 INFO L93 Difference]: Finished difference Result 2262 states and 7067 transitions.
[2022-02-18 17:20:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-02-18 17:20:54,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:54,539 INFO L225 Difference]: With dead ends: 2262
[2022-02-18 17:20:54,539 INFO L226 Difference]: Without dead ends: 2262
[2022-02-18 17:20:54,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190
[2022-02-18 17:20:54,540 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 164 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:54,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 138 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states.
[2022-02-18 17:20:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1073.
[2022-02-18 17:20:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 3.3563432835820897) internal successors, (3598), 1072 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 3598 transitions.
[2022-02-18 17:20:54,570 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 3598 transitions. Word has length 24
[2022-02-18 17:20:54,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:54,571 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 3598 transitions.
[2022-02-18 17:20:54,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 3598 transitions.
[2022-02-18 17:20:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:54,573 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:54,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:54,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:54,795 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
[2022-02-18 17:20:54,795 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1926458882, now seen corresponding path program 19 times
[2022-02-18 17:20:54,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:54,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216269611]
[2022-02-18 17:20:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:54,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:54,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:54,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216269611]
[2022-02-18 17:20:54,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216269611] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:54,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844753757]
[2022-02-18 17:20:54,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:20:54,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:54,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:54,835 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)
[2022-02-18 17:20:54,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2022-02-18 17:20:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:54,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:54,857 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:54,945 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:54,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844753757] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:54,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:54,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14
[2022-02-18 17:20:54,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241471720]
[2022-02-18 17:20:54,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:54,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-18 17:20:54,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-18 17:20:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2022-02-18 17:20:54,994 INFO L87 Difference]: Start difference. First operand 1073 states and 3598 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 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)
[2022-02-18 17:20:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:55,254 INFO L93 Difference]: Finished difference Result 1474 states and 4766 transitions.
[2022-02-18 17:20:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-02-18 17:20:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 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 24
[2022-02-18 17:20:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:55,258 INFO L225 Difference]: With dead ends: 1474
[2022-02-18 17:20:55,258 INFO L226 Difference]: Without dead ends: 1464
[2022-02-18 17:20:55,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:20:55,258 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 156 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:55,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 133 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states.
[2022-02-18 17:20:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1140.
[2022-02-18 17:20:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.395961369622476) internal successors, (3868), 1139 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3868 transitions.
[2022-02-18 17:20:55,281 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3868 transitions. Word has length 24
[2022-02-18 17:20:55,281 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:55,282 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 3868 transitions.
[2022-02-18 17:20:55,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 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)
[2022-02-18 17:20:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3868 transitions.
[2022-02-18 17:20:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:55,284 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:55,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:55,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:55,506 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
[2022-02-18 17:20:55,507 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -888257368, now seen corresponding path program 20 times
[2022-02-18 17:20:55,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:55,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382808373]
[2022-02-18 17:20:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:55,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:55,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382808373]
[2022-02-18 17:20:55,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382808373] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:55,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989484730]
[2022-02-18 17:20:55,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:20:55,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:55,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:55,552 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)
[2022-02-18 17:20:55,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2022-02-18 17:20:55,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:20:55,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:55,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:55,625 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:55,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989484730] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:55,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:55,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10
[2022-02-18 17:20:55,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98744544]
[2022-02-18 17:20:55,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:55,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-18 17:20:55,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:55,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-18 17:20:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2022-02-18 17:20:55,681 INFO L87 Difference]: Start difference. First operand 1140 states and 3868 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:55,930 INFO L93 Difference]: Finished difference Result 2318 states and 7414 transitions.
[2022-02-18 17:20:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-02-18 17:20:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:55,934 INFO L225 Difference]: With dead ends: 2318
[2022-02-18 17:20:55,934 INFO L226 Difference]: Without dead ends: 2314
[2022-02-18 17:20:55,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:20:55,935 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 219 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:55,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 90 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-18 17:20:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states.
[2022-02-18 17:20:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1140.
[2022-02-18 17:20:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.394205443371378) internal successors, (3866), 1139 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3866 transitions.
[2022-02-18 17:20:55,958 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3866 transitions. Word has length 24
[2022-02-18 17:20:55,958 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:55,958 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 3866 transitions.
[2022-02-18 17:20:55,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3866 transitions.
[2022-02-18 17:20:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:55,960 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:55,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:55,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2022-02-18 17:20:56,168 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
[2022-02-18 17:20:56,169 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash -290920710, now seen corresponding path program 21 times
[2022-02-18 17:20:56,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:56,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062891497]
[2022-02-18 17:20:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:56,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:56,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062891497]
[2022-02-18 17:20:56,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062891497] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:56,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853821295]
[2022-02-18 17:20:56,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:20:56,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:56,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:56,215 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)
[2022-02-18 17:20:56,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2022-02-18 17:20:56,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:20:56,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:56,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:56,294 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:56,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853821295] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:56,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:56,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11
[2022-02-18 17:20:56,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962441959]
[2022-02-18 17:20:56,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:56,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-02-18 17:20:56,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-02-18 17:20:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2022-02-18 17:20:56,361 INFO L87 Difference]: Start difference. First operand 1140 states and 3866 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:56,694 INFO L93 Difference]: Finished difference Result 2302 states and 7376 transitions.
[2022-02-18 17:20:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-02-18 17:20:56,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:56,698 INFO L225 Difference]: With dead ends: 2302
[2022-02-18 17:20:56,698 INFO L226 Difference]: Without dead ends: 2290
[2022-02-18 17:20:56,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930
[2022-02-18 17:20:56,699 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 236 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:56,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 133 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:20:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states.
[2022-02-18 17:20:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1148.
[2022-02-18 17:20:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.3844812554489976) internal successors, (3882), 1147 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 3882 transitions.
[2022-02-18 17:20:56,721 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 3882 transitions. Word has length 24
[2022-02-18 17:20:56,721 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:56,721 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 3882 transitions.
[2022-02-18 17:20:56,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 3882 transitions.
[2022-02-18 17:20:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:56,724 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:56,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:56,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2022-02-18 17:20:56,931 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
[2022-02-18 17:20:56,931 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash -817340994, now seen corresponding path program 22 times
[2022-02-18 17:20:56,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:56,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125514849]
[2022-02-18 17:20:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:56,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:56,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125514849]
[2022-02-18 17:20:56,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125514849] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:56,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733670911]
[2022-02-18 17:20:56,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:20:56,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:56,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:56,975 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)
[2022-02-18 17:20:56,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2022-02-18 17:20:56,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:20:56,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:56,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:57,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733670911] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:57,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:57,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:20:57,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318258710]
[2022-02-18 17:20:57,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:57,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:20:57,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:20:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:57,180 INFO L87 Difference]: Start difference. First operand 1148 states and 3882 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:57,998 INFO L93 Difference]: Finished difference Result 4760 states and 15112 transitions.
[2022-02-18 17:20:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2022-02-18 17:20:57,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:58,015 INFO L225 Difference]: With dead ends: 4760
[2022-02-18 17:20:58,015 INFO L226 Difference]: Without dead ends: 4760
[2022-02-18 17:20:58,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660
[2022-02-18 17:20:58,017 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 435 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:58,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 202 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:20:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states.
[2022-02-18 17:20:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 1429.
[2022-02-18 17:20:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 3.589635854341737) internal successors, (5126), 1428 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)
[2022-02-18 17:20:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 5126 transitions.
[2022-02-18 17:20:58,075 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 5126 transitions. Word has length 24
[2022-02-18 17:20:58,075 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 1429 states and 5126 transitions.
[2022-02-18 17:20:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 5126 transitions.
[2022-02-18 17:20:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:58,078 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:58,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:58,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2022-02-18 17:20:58,299 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
[2022-02-18 17:20:58,299 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -250388914, now seen corresponding path program 23 times
[2022-02-18 17:20:58,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:58,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951340981]
[2022-02-18 17:20:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:58,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:58,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951340981]
[2022-02-18 17:20:58,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951340981] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:58,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595523891]
[2022-02-18 17:20:58,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:20:58,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:58,351 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)
[2022-02-18 17:20:58,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2022-02-18 17:20:58,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:20:58,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:58,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:58,489 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:20:58,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595523891] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:58,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:58,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:20:58,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944533499]
[2022-02-18 17:20:58,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:58,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:20:58,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:20:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:20:58,575 INFO L87 Difference]: Start difference. First operand 1429 states and 5126 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:20:59,295 INFO L93 Difference]: Finished difference Result 4260 states and 13532 transitions.
[2022-02-18 17:20:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:20:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:20:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:20:59,304 INFO L225 Difference]: With dead ends: 4260
[2022-02-18 17:20:59,304 INFO L226 Difference]: Without dead ends: 4260
[2022-02-18 17:20:59,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=860, Invalid=2220, Unknown=0, NotChecked=0, Total=3080
[2022-02-18 17:20:59,306 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 350 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:20:59,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 198 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:20:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states.
[2022-02-18 17:20:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 1426.
[2022-02-18 17:20:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.5873684210526315) internal successors, (5112), 1425 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)
[2022-02-18 17:20:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5112 transitions.
[2022-02-18 17:20:59,356 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5112 transitions. Word has length 24
[2022-02-18 17:20:59,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:20:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 5112 transitions.
[2022-02-18 17:20:59,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:20:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5112 transitions.
[2022-02-18 17:20:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:20:59,360 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:20:59,360 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:20:59,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2022-02-18 17:20:59,582 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
[2022-02-18 17:20:59,582 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:20:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:20:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1422734772, now seen corresponding path program 24 times
[2022-02-18 17:20:59,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:20:59,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483776023]
[2022-02-18 17:20:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:20:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:20:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:20:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:59,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:20:59,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483776023]
[2022-02-18 17:20:59,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483776023] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:20:59,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674333636]
[2022-02-18 17:20:59,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:20:59,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:20:59,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:20:59,633 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)
[2022-02-18 17:20:59,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2022-02-18 17:20:59,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:20:59,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:20:59,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:20:59,665 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:20:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:59,747 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:20:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:20:59,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674333636] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:20:59,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:20:59,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14
[2022-02-18 17:20:59,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962929232]
[2022-02-18 17:20:59,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:20:59,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-02-18 17:20:59,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:20:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-02-18 17:20:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2022-02-18 17:20:59,821 INFO L87 Difference]: Start difference. First operand 1426 states and 5112 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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)
[2022-02-18 17:21:00,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:00,482 INFO L93 Difference]: Finished difference Result 4602 states and 14473 transitions.
[2022-02-18 17:21:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-02-18 17:21:00,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 24
[2022-02-18 17:21:00,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:00,491 INFO L225 Difference]: With dead ends: 4602
[2022-02-18 17:21:00,491 INFO L226 Difference]: Without dead ends: 4602
[2022-02-18 17:21:00,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652
[2022-02-18 17:21:00,493 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 307 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:00,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 195 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states.
[2022-02-18 17:21:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 1436.
[2022-02-18 17:21:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.592334494773519) internal successors, (5155), 1435 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5155 transitions.
[2022-02-18 17:21:00,545 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5155 transitions. Word has length 24
[2022-02-18 17:21:00,545 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:00,546 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5155 transitions.
[2022-02-18 17:21:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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)
[2022-02-18 17:21:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5155 transitions.
[2022-02-18 17:21:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:00,549 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:00,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:00,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:00,770 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
[2022-02-18 17:21:00,771 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1341358684, now seen corresponding path program 25 times
[2022-02-18 17:21:00,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:00,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769120243]
[2022-02-18 17:21:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:00,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:00,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769120243]
[2022-02-18 17:21:00,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769120243] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:00,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852109665]
[2022-02-18 17:21:00,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:21:00,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:00,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:00,815 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)
[2022-02-18 17:21:00,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2022-02-18 17:21:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:00,910 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:00,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852109665] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:00,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:00,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14
[2022-02-18 17:21:00,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66816743]
[2022-02-18 17:21:00,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:00,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-02-18 17:21:00,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-02-18 17:21:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2022-02-18 17:21:00,977 INFO L87 Difference]: Start difference. First operand 1436 states and 5155 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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)
[2022-02-18 17:21:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:01,552 INFO L93 Difference]: Finished difference Result 4348 states and 13871 transitions.
[2022-02-18 17:21:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-02-18 17:21:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 24
[2022-02-18 17:21:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:01,559 INFO L225 Difference]: With dead ends: 4348
[2022-02-18 17:21:01,559 INFO L226 Difference]: Without dead ends: 4344
[2022-02-18 17:21:01,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=514, Invalid=1466, Unknown=0, NotChecked=0, Total=1980
[2022-02-18 17:21:01,560 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 330 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:01,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 182 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states.
[2022-02-18 17:21:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 1436.
[2022-02-18 17:21:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.590940766550523) internal successors, (5153), 1435 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5153 transitions.
[2022-02-18 17:21:01,608 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5153 transitions. Word has length 24
[2022-02-18 17:21:01,608 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:01,608 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5153 transitions.
[2022-02-18 17:21:01,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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)
[2022-02-18 17:21:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5153 transitions.
[2022-02-18 17:21:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:01,611 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:01,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:01,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:01,827 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
[2022-02-18 17:21:01,827 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -410701468, now seen corresponding path program 26 times
[2022-02-18 17:21:01,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:01,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486636529]
[2022-02-18 17:21:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:01,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:01,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486636529]
[2022-02-18 17:21:01,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486636529] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:01,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059416379]
[2022-02-18 17:21:01,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:21:01,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:01,866 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)
[2022-02-18 17:21:01,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2022-02-18 17:21:01,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:21:01,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:01,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:01,892 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:01,987 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:21:02,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059416379] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:02,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:02,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:21:02,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671196243]
[2022-02-18 17:21:02,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:02,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:21:02,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:02,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:21:02,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:21:02,070 INFO L87 Difference]: Start difference. First operand 1436 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:02,677 INFO L93 Difference]: Finished difference Result 4035 states and 12669 transitions.
[2022-02-18 17:21:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-02-18 17:21:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:02,683 INFO L225 Difference]: With dead ends: 4035
[2022-02-18 17:21:02,683 INFO L226 Difference]: Without dead ends: 4035
[2022-02-18 17:21:02,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=640, Invalid=1616, Unknown=0, NotChecked=0, Total=2256
[2022-02-18 17:21:02,684 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 468 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:02,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 209 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states.
[2022-02-18 17:21:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 1442.
[2022-02-18 17:21:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 3.5933379597501736) internal successors, (5178), 1441 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5178 transitions.
[2022-02-18 17:21:02,722 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5178 transitions. Word has length 24
[2022-02-18 17:21:02,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:02,722 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 5178 transitions.
[2022-02-18 17:21:02,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5178 transitions.
[2022-02-18 17:21:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:02,724 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:02,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:02,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2022-02-18 17:21:02,925 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
[2022-02-18 17:21:02,925 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1232337686, now seen corresponding path program 27 times
[2022-02-18 17:21:02,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:02,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761042551]
[2022-02-18 17:21:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:02,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:02,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:02,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761042551]
[2022-02-18 17:21:02,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761042551] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:02,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650078306]
[2022-02-18 17:21:02,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:21:02,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:02,972 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)
[2022-02-18 17:21:02,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2022-02-18 17:21:02,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:21:02,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:02,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:02,995 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:03,087 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-18 17:21:03,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650078306] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:03,173 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:03,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2022-02-18 17:21:03,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287958013]
[2022-02-18 17:21:03,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:03,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-02-18 17:21:03,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-02-18 17:21:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240
[2022-02-18 17:21:03,174 INFO L87 Difference]: Start difference. First operand 1442 states and 5178 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:03,935 INFO L93 Difference]: Finished difference Result 3794 states and 12201 transitions.
[2022-02-18 17:21:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:21:03,935 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:03,941 INFO L225 Difference]: With dead ends: 3794
[2022-02-18 17:21:03,941 INFO L226 Difference]: Without dead ends: 3790
[2022-02-18 17:21:03,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=800, Invalid=2392, Unknown=0, NotChecked=0, Total=3192
[2022-02-18 17:21:03,941 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 453 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:03,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 178 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states.
[2022-02-18 17:21:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 1436.
[2022-02-18 17:21:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.590940766550523) internal successors, (5153), 1435 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5153 transitions.
[2022-02-18 17:21:03,974 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5153 transitions. Word has length 24
[2022-02-18 17:21:03,974 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:03,974 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5153 transitions.
[2022-02-18 17:21:03,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5153 transitions.
[2022-02-18 17:21:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:03,977 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:03,977 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:03,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2022-02-18 17:21:04,177 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
[2022-02-18 17:21:04,177 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:04,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2059201626, now seen corresponding path program 28 times
[2022-02-18 17:21:04,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:04,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544754183]
[2022-02-18 17:21:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:04,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:04,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544754183]
[2022-02-18 17:21:04,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544754183] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:04,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576894056]
[2022-02-18 17:21:04,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:21:04,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:04,218 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)
[2022-02-18 17:21:04,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2022-02-18 17:21:04,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:21:04,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:04,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:04,240 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:04,305 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:04,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576894056] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:04,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:04,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:21:04,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120491367]
[2022-02-18 17:21:04,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:04,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:21:04,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:21:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:21:04,379 INFO L87 Difference]: Start difference. First operand 1436 states and 5153 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:05,042 INFO L93 Difference]: Finished difference Result 3978 states and 12923 transitions.
[2022-02-18 17:21:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:21:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:05,049 INFO L225 Difference]: With dead ends: 3978
[2022-02-18 17:21:05,049 INFO L226 Difference]: Without dead ends: 3978
[2022-02-18 17:21:05,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=2271, Unknown=0, NotChecked=0, Total=2970
[2022-02-18 17:21:05,049 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 272 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:05,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 165 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:05,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states.
[2022-02-18 17:21:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 1585.
[2022-02-18 17:21:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.591540404040404) internal successors, (5689), 1584 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5689 transitions.
[2022-02-18 17:21:05,086 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5689 transitions. Word has length 24
[2022-02-18 17:21:05,086 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:05,086 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 5689 transitions.
[2022-02-18 17:21:05,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5689 transitions.
[2022-02-18 17:21:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:05,090 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:05,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:05,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:05,311 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
[2022-02-18 17:21:05,311 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1977825538, now seen corresponding path program 29 times
[2022-02-18 17:21:05,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:05,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784895280]
[2022-02-18 17:21:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:05,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:05,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784895280]
[2022-02-18 17:21:05,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784895280] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:05,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406098560]
[2022-02-18 17:21:05,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:21:05,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:05,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:05,352 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)
[2022-02-18 17:21:05,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2022-02-18 17:21:05,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:21:05,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:05,374 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:05,445 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:05,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406098560] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:05,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:05,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:21:05,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506283185]
[2022-02-18 17:21:05,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:05,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:21:05,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:21:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:21:05,508 INFO L87 Difference]: Start difference. First operand 1585 states and 5689 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:06,002 INFO L93 Difference]: Finished difference Result 3706 states and 12257 transitions.
[2022-02-18 17:21:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-02-18 17:21:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:06,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:06,009 INFO L225 Difference]: With dead ends: 3706
[2022-02-18 17:21:06,009 INFO L226 Difference]: Without dead ends: 3702
[2022-02-18 17:21:06,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1435, Unknown=0, NotChecked=0, Total=1892
[2022-02-18 17:21:06,009 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 265 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:06,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 150 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-18 17:21:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states.
[2022-02-18 17:21:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 1575.
[2022-02-18 17:21:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.5870393900889455) internal successors, (5646), 1574 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 5646 transitions.
[2022-02-18 17:21:06,045 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 5646 transitions. Word has length 24
[2022-02-18 17:21:06,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:06,045 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 5646 transitions.
[2022-02-18 17:21:06,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 5646 transitions.
[2022-02-18 17:21:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:06,048 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:06,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:06,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:06,268 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
[2022-02-18 17:21:06,268 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 802049786, now seen corresponding path program 30 times
[2022-02-18 17:21:06,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:06,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547603912]
[2022-02-18 17:21:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:06,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:06,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547603912]
[2022-02-18 17:21:06,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547603912] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:06,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651662070]
[2022-02-18 17:21:06,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:21:06,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:06,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:06,326 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)
[2022-02-18 17:21:06,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2022-02-18 17:21:06,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:21:06,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:06,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:06,420 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:06,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651662070] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:06,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:06,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2022-02-18 17:21:06,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478606125]
[2022-02-18 17:21:06,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:06,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-18 17:21:06,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-18 17:21:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156
[2022-02-18 17:21:06,488 INFO L87 Difference]: Start difference. First operand 1575 states and 5646 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:07,043 INFO L93 Difference]: Finished difference Result 4114 states and 13193 transitions.
[2022-02-18 17:21:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-02-18 17:21:07,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:07,050 INFO L225 Difference]: With dead ends: 4114
[2022-02-18 17:21:07,050 INFO L226 Difference]: Without dead ends: 4102
[2022-02-18 17:21:07,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=486, Invalid=1676, Unknown=0, NotChecked=0, Total=2162
[2022-02-18 17:21:07,051 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 304 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:07,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 167 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states.
[2022-02-18 17:21:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1595.
[2022-02-18 17:21:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.5884567126725218) internal successors, (5720), 1594 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5720 transitions.
[2022-02-18 17:21:07,102 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5720 transitions. Word has length 24
[2022-02-18 17:21:07,102 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:07,102 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 5720 transitions.
[2022-02-18 17:21:07,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5720 transitions.
[2022-02-18 17:21:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:07,104 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:07,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:07,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2022-02-18 17:21:07,305 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
[2022-02-18 17:21:07,305 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1895790794, now seen corresponding path program 31 times
[2022-02-18 17:21:07,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:07,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477016126]
[2022-02-18 17:21:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:07,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:07,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:07,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477016126]
[2022-02-18 17:21:07,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477016126] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:07,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137390056]
[2022-02-18 17:21:07,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:21:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:07,373 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)
[2022-02-18 17:21:07,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2022-02-18 17:21:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:07,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:07,403 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:07,485 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:07,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137390056] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:07,569 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:07,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:21:07,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281031162]
[2022-02-18 17:21:07,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:07,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-18 17:21:07,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-18 17:21:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2022-02-18 17:21:07,570 INFO L87 Difference]: Start difference. First operand 1595 states and 5720 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:08,191 INFO L93 Difference]: Finished difference Result 3694 states and 11776 transitions.
[2022-02-18 17:21:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-02-18 17:21:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:08,197 INFO L225 Difference]: With dead ends: 3694
[2022-02-18 17:21:08,197 INFO L226 Difference]: Without dead ends: 3694
[2022-02-18 17:21:08,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=678, Invalid=1772, Unknown=0, NotChecked=0, Total=2450
[2022-02-18 17:21:08,198 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 344 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:08,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 268 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states.
[2022-02-18 17:21:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 1680.
[2022-02-18 17:21:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 3.5842763549731984) internal successors, (6018), 1679 states have internal predecessors, (6018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 6018 transitions.
[2022-02-18 17:21:08,233 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 6018 transitions. Word has length 24
[2022-02-18 17:21:08,234 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 6018 transitions.
[2022-02-18 17:21:08,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 6018 transitions.
[2022-02-18 17:21:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:08,237 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:08,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:08,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2022-02-18 17:21:08,450 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
[2022-02-18 17:21:08,450 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash -252751640, now seen corresponding path program 32 times
[2022-02-18 17:21:08,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:08,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956382293]
[2022-02-18 17:21:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:08,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:08,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956382293]
[2022-02-18 17:21:08,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956382293] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:08,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170209464]
[2022-02-18 17:21:08,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:21:08,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:08,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:08,497 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)
[2022-02-18 17:21:08,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2022-02-18 17:21:08,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:21:08,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:08,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:08,529 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:08,611 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:08,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170209464] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:08,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:08,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-02-18 17:21:08,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598404939]
[2022-02-18 17:21:08,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:08,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-02-18 17:21:08,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-02-18 17:21:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272
[2022-02-18 17:21:08,701 INFO L87 Difference]: Start difference. First operand 1680 states and 6018 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:09,553 INFO L93 Difference]: Finished difference Result 3420 states and 11230 transitions.
[2022-02-18 17:21:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:21:09,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24
[2022-02-18 17:21:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:09,559 INFO L225 Difference]: With dead ends: 3420
[2022-02-18 17:21:09,559 INFO L226 Difference]: Without dead ends: 3416
[2022-02-18 17:21:09,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660
[2022-02-18 17:21:09,560 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 343 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:09,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 234 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-18 17:21:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states.
[2022-02-18 17:21:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 1678.
[2022-02-18 17:21:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 3.5819916517590937) internal successors, (6007), 1677 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 6007 transitions.
[2022-02-18 17:21:09,594 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 6007 transitions. Word has length 24
[2022-02-18 17:21:09,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:09,594 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 6007 transitions.
[2022-02-18 17:21:09,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 6007 transitions.
[2022-02-18 17:21:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-18 17:21:09,597 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:09,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:09,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2022-02-18 17:21:09,797 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
[2022-02-18 17:21:09,798 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1520208818, now seen corresponding path program 33 times
[2022-02-18 17:21:09,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:09,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637833217]
[2022-02-18 17:21:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:09,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:09,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637833217]
[2022-02-18 17:21:09,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637833217] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:09,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997035590]
[2022-02-18 17:21:09,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:21:09,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:09,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:09,845 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)
[2022-02-18 17:21:09,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2022-02-18 17:21:09,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:21:09,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:09,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-18 17:21:09,868 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:09,935 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:10,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997035590] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:10,011 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:10,012 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2022-02-18 17:21:10,012 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688482101]
[2022-02-18 17:21:10,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:10,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-18 17:21:10,012 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-18 17:21:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210
[2022-02-18 17:21:10,013 INFO L87 Difference]: Start difference. First operand 1678 states and 6007 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 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)
[2022-02-18 17:21:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:10,618 INFO L93 Difference]: Finished difference Result 3256 states and 10823 transitions.
[2022-02-18 17:21:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-02-18 17:21:10,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 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 24
[2022-02-18 17:21:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:10,624 INFO L225 Difference]: With dead ends: 3256
[2022-02-18 17:21:10,624 INFO L226 Difference]: Without dead ends: 3244
[2022-02-18 17:21:10,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352
[2022-02-18 17:21:10,624 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 257 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:10,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 170 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-18 17:21:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states.
[2022-02-18 17:21:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1676.
[2022-02-18 17:21:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 3.5797014925373136) internal successors, (5996), 1675 states have internal predecessors, (5996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5996 transitions.
[2022-02-18 17:21:10,668 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5996 transitions. Word has length 24
[2022-02-18 17:21:10,668 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:10,668 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 5996 transitions.
[2022-02-18 17:21:10,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 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)
[2022-02-18 17:21:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5996 transitions.
[2022-02-18 17:21:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:21:10,671 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:10,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:10,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0
[2022-02-18 17:21:10,871 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
[2022-02-18 17:21:10,871 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1154803164, now seen corresponding path program 4 times
[2022-02-18 17:21:10,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:10,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229361153]
[2022-02-18 17:21:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:11,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:11,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229361153]
[2022-02-18 17:21:11,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229361153] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:11,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374991430]
[2022-02-18 17:21:11,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:21:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:11,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:11,500 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)
[2022-02-18 17:21:11,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2022-02-18 17:21:11,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:21:11,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:21:11,524 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:21:12,324 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:12,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:21:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:12,549 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:13,702 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:13,722 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:21:13,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 343 treesize of output 269
[2022-02-18 17:21:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:16,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374991430] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:16,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:16,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:21:16,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172733549]
[2022-02-18 17:21:16,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:16,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:21:16,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:21:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:21:16,371 INFO L87 Difference]: Start difference. First operand 1676 states and 5996 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:23,671 INFO L93 Difference]: Finished difference Result 4116 states and 13116 transitions.
[2022-02-18 17:21:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:21:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:21:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:23,678 INFO L225 Difference]: With dead ends: 4116
[2022-02-18 17:21:23,678 INFO L226 Difference]: Without dead ends: 4056
[2022-02-18 17:21:23,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=978, Invalid=4134, Unknown=0, NotChecked=0, Total=5112
[2022-02-18 17:21:23,679 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 582 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:23,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 281 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-02-18 17:21:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states.
[2022-02-18 17:21:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 1792.
[2022-02-18 17:21:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1791 states have (on average 3.5907314349525405) internal successors, (6431), 1791 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 6431 transitions.
[2022-02-18 17:21:23,715 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 6431 transitions. Word has length 26
[2022-02-18 17:21:23,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:23,715 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 6431 transitions.
[2022-02-18 17:21:23,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 6431 transitions.
[2022-02-18 17:21:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:21:23,718 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:23,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:23,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:23,920 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
[2022-02-18 17:21:23,921 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash -873594852, now seen corresponding path program 5 times
[2022-02-18 17:21:23,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:23,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294523937]
[2022-02-18 17:21:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:24,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:24,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294523937]
[2022-02-18 17:21:24,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294523937] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:24,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722693975]
[2022-02-18 17:21:24,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:21:24,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:24,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:24,695 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)
[2022-02-18 17:21:24,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2022-02-18 17:21:24,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:21:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:21:24,726 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:21:25,335 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:25,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:21:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:25,737 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:26,838 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:26,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:21:26,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 335 treesize of output 261
[2022-02-18 17:21:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:29,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722693975] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:29,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:29,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:21:29,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570885233]
[2022-02-18 17:21:29,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:29,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:21:29,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:29,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:21:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:21:29,538 INFO L87 Difference]: Start difference. First operand 1792 states and 6431 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:36,535 INFO L93 Difference]: Finished difference Result 4145 states and 13246 transitions.
[2022-02-18 17:21:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:21:36,535 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:21:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:36,542 INFO L225 Difference]: With dead ends: 4145
[2022-02-18 17:21:36,542 INFO L226 Difference]: Without dead ends: 4115
[2022-02-18 17:21:36,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1006, Invalid=4396, Unknown=0, NotChecked=0, Total=5402
[2022-02-18 17:21:36,543 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 493 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:36,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 373 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1394 Invalid, 0 Unknown, 85 Unchecked, 1.0s Time]
[2022-02-18 17:21:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states.
[2022-02-18 17:21:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 1818.
[2022-02-18 17:21:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.5833791964777104) internal successors, (6511), 1817 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6511 transitions.
[2022-02-18 17:21:36,578 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6511 transitions. Word has length 26
[2022-02-18 17:21:36,578 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:36,578 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 6511 transitions.
[2022-02-18 17:21:36,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6511 transitions.
[2022-02-18 17:21:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:21:36,581 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:36,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:36,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:36,782 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
[2022-02-18 17:21:36,782 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 717834456, now seen corresponding path program 34 times
[2022-02-18 17:21:36,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:36,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248300961]
[2022-02-18 17:21:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:37,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:37,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248300961]
[2022-02-18 17:21:37,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248300961] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:37,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167370251]
[2022-02-18 17:21:37,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:21:37,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:37,536 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)
[2022-02-18 17:21:37,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2022-02-18 17:21:37,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:21:37,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:37,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:21:37,563 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:38,234 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:21:38,235 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:21:38,235 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:38,236 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:21:38,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 75
[2022-02-18 17:21:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:38,368 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:39,515 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:21:39,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 253
[2022-02-18 17:21:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:40,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167370251] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:40,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:40,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24
[2022-02-18 17:21:40,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638243916]
[2022-02-18 17:21:40,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:40,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:21:40,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:21:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:21:40,432 INFO L87 Difference]: Start difference. First operand 1818 states and 6511 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:21:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:21:49,140 INFO L93 Difference]: Finished difference Result 3781 states and 12664 transitions.
[2022-02-18 17:21:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2022-02-18 17:21:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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 26
[2022-02-18 17:21:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:21:49,146 INFO L225 Difference]: With dead ends: 3781
[2022-02-18 17:21:49,146 INFO L226 Difference]: Without dead ends: 3751
[2022-02-18 17:21:49,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2721 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1161, Invalid=7029, Unknown=0, NotChecked=0, Total=8190
[2022-02-18 17:21:49,147 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 350 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:21:49,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 301 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-02-18 17:21:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states.
[2022-02-18 17:21:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 1891.
[2022-02-18 17:21:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 3.5783068783068783) internal successors, (6763), 1890 states have internal predecessors, (6763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:21:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 6763 transitions.
[2022-02-18 17:21:49,195 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 6763 transitions. Word has length 26
[2022-02-18 17:21:49,195 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:21:49,195 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 6763 transitions.
[2022-02-18 17:21:49,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:21:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 6763 transitions.
[2022-02-18 17:21:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:21:49,199 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:21:49,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:21:49,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0
[2022-02-18 17:21:49,406 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
[2022-02-18 17:21:49,406 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:21:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:21:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1522881632, now seen corresponding path program 6 times
[2022-02-18 17:21:49,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:21:49,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610473360]
[2022-02-18 17:21:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:21:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:21:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:21:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:50,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:21:50,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610473360]
[2022-02-18 17:21:50,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610473360] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:21:50,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756683284]
[2022-02-18 17:21:50,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:21:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:21:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:21:50,248 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)
[2022-02-18 17:21:50,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2022-02-18 17:21:50,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:21:50,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:21:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:21:50,273 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:21:50,802 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:21:50,807 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:21:50,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:21:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:51,394 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:21:52,845 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:21:52,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 455 treesize of output 333
[2022-02-18 17:21:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:21:57,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756683284] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:21:57,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:21:57,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:21:57,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022164619]
[2022-02-18 17:21:57,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:21:57,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:21:57,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:21:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:21:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:21:57,966 INFO L87 Difference]: Start difference. First operand 1891 states and 6763 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:22:11,397 INFO L93 Difference]: Finished difference Result 4612 states and 14736 transitions.
[2022-02-18 17:22:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2022-02-18 17:22:11,397 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:22:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:22:11,405 INFO L225 Difference]: With dead ends: 4612
[2022-02-18 17:22:11,405 INFO L226 Difference]: Without dead ends: 4567
[2022-02-18 17:22:11,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1233, Invalid=8079, Unknown=0, NotChecked=0, Total=9312
[2022-02-18 17:22:11,406 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 604 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2022-02-18 17:22:11,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 518 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2022-02-18 17:22:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states.
[2022-02-18 17:22:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 1942.
[2022-02-18 17:22:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 3.573415765069552) internal successors, (6936), 1941 states have internal predecessors, (6936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 6936 transitions.
[2022-02-18 17:22:11,448 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 6936 transitions. Word has length 26
[2022-02-18 17:22:11,448 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:22:11,448 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 6936 transitions.
[2022-02-18 17:22:11,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 6936 transitions.
[2022-02-18 17:22:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:22:11,451 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:22:11,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:22:11,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2022-02-18 17:22:11,652 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
[2022-02-18 17:22:11,652 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:22:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:22:11,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1221704100, now seen corresponding path program 35 times
[2022-02-18 17:22:11,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:22:11,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051262143]
[2022-02-18 17:22:11,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:22:11,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:22:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:22:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:12,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:22:12,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051262143]
[2022-02-18 17:22:12,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051262143] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:22:12,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429203300]
[2022-02-18 17:22:12,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:22:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:22:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:22:12,280 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)
[2022-02-18 17:22:12,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2022-02-18 17:22:12,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:22:12,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:22:12,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:22:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:22:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:22:12,990 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:22:12,991 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:22:12,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 75
[2022-02-18 17:22:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:13,122 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:22:14,145 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:22:14,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 253
[2022-02-18 17:22:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:15,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429203300] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:22:15,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:22:15,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23
[2022-02-18 17:22:15,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225484440]
[2022-02-18 17:22:15,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:22:15,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-02-18 17:22:15,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:22:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-02-18 17:22:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552
[2022-02-18 17:22:15,132 INFO L87 Difference]: Start difference. First operand 1942 states and 6936 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:22:24,992 INFO L93 Difference]: Finished difference Result 4522 states and 14852 transitions.
[2022-02-18 17:22:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-02-18 17:22:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:22:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:22:25,015 INFO L225 Difference]: With dead ends: 4522
[2022-02-18 17:22:25,015 INFO L226 Difference]: Without dead ends: 4460
[2022-02-18 17:22:25,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1538, Invalid=7582, Unknown=0, NotChecked=0, Total=9120
[2022-02-18 17:22:25,016 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 475 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:22:25,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 490 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2022-02-18 17:22:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states.
[2022-02-18 17:22:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 1990.
[2022-02-18 17:22:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.572649572649573) internal successors, (7106), 1989 states have internal predecessors, (7106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 7106 transitions.
[2022-02-18 17:22:25,071 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 7106 transitions. Word has length 26
[2022-02-18 17:22:25,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:22:25,071 INFO L470 AbstractCegarLoop]: Abstraction has 1990 states and 7106 transitions.
[2022-02-18 17:22:25,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:22:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 7106 transitions.
[2022-02-18 17:22:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:22:25,075 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:22:25,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:22:25,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2022-02-18 17:22:25,295 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
[2022-02-18 17:22:25,296 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:22:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:22:25,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2096944352, now seen corresponding path program 36 times
[2022-02-18 17:22:25,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:22:25,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808105860]
[2022-02-18 17:22:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:22:25,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:22:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:22:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:25,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:22:25,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808105860]
[2022-02-18 17:22:25,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808105860] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:22:25,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203655983]
[2022-02-18 17:22:25,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:22:25,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:22:25,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:22:25,888 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)
[2022-02-18 17:22:25,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2022-02-18 17:22:25,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:22:25,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:22:25,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:22:25,915 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:22:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:22:26,459 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:22:26,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:22:26,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 101
[2022-02-18 17:22:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:27,037 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:22:28,034 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:22:28,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 253
[2022-02-18 17:22:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:22:28,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203655983] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:22:28,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:22:28,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25
[2022-02-18 17:22:28,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904367517]
[2022-02-18 17:22:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:22:28,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:22:28,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:22:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:22:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:22:28,956 INFO L87 Difference]: Start difference. First operand 1990 states and 7106 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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)
[2022-02-18 17:23:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:23:06,395 INFO L93 Difference]: Finished difference Result 5687 states and 18156 transitions.
[2022-02-18 17:23:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states.
[2022-02-18 17:23:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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 26
[2022-02-18 17:23:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:23:06,405 INFO L225 Difference]: With dead ends: 5687
[2022-02-18 17:23:06,405 INFO L226 Difference]: Without dead ends: 5639
[2022-02-18 17:23:06,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17823 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=4570, Invalid=38072, Unknown=0, NotChecked=0, Total=42642
[2022-02-18 17:23:06,407 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 745 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 4875 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 4992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:23:06,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1029 Invalid, 4992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4875 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-02-18 17:23:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states.
[2022-02-18 17:23:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 2081.
[2022-02-18 17:23:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2080 states have (on average 3.5673076923076925) internal successors, (7420), 2080 states have internal predecessors, (7420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:06,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 7420 transitions.
[2022-02-18 17:23:06,457 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 7420 transitions. Word has length 26
[2022-02-18 17:23:06,457 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:23:06,457 INFO L470 AbstractCegarLoop]: Abstraction has 2081 states and 7420 transitions.
[2022-02-18 17:23:06,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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)
[2022-02-18 17:23:06,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 7420 transitions.
[2022-02-18 17:23:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:23:06,461 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:23:06,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:23:06,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2022-02-18 17:23:06,661 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
[2022-02-18 17:23:06,661 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:23:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:23:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -964441720, now seen corresponding path program 7 times
[2022-02-18 17:23:06,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:23:06,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17547902]
[2022-02-18 17:23:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:23:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:23:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:23:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:07,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:23:07,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17547902]
[2022-02-18 17:23:07,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17547902] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:23:07,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533237667]
[2022-02-18 17:23:07,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:23:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:23:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:23:07,137 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)
[2022-02-18 17:23:07,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2022-02-18 17:23:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:23:07,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:23:07,165 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:23:07,785 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:23:07,786 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:07,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:23:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:08,094 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:23:09,181 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:09,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:23:09,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 343 treesize of output 269
[2022-02-18 17:23:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:11,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533237667] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:23:11,609 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:23:11,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:23:11,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125456328]
[2022-02-18 17:23:11,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:23:11,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:23:11,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:23:11,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:23:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:23:11,610 INFO L87 Difference]: Start difference. First operand 2081 states and 7420 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:23:18,517 INFO L93 Difference]: Finished difference Result 4614 states and 14746 transitions.
[2022-02-18 17:23:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:23:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:23:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:23:18,525 INFO L225 Difference]: With dead ends: 4614
[2022-02-18 17:23:18,525 INFO L226 Difference]: Without dead ends: 4569
[2022-02-18 17:23:18,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=994, Invalid=4118, Unknown=0, NotChecked=0, Total=5112
[2022-02-18 17:23:18,525 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 521 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:23:18,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 331 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-02-18 17:23:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states.
[2022-02-18 17:23:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 2109.
[2022-02-18 17:23:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 2108 states have (on average 3.562618595825427) internal successors, (7510), 2108 states have internal predecessors, (7510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 7510 transitions.
[2022-02-18 17:23:18,566 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 7510 transitions. Word has length 26
[2022-02-18 17:23:18,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:23:18,566 INFO L470 AbstractCegarLoop]: Abstraction has 2109 states and 7510 transitions.
[2022-02-18 17:23:18,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 7510 transitions.
[2022-02-18 17:23:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:23:18,569 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:23:18,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:23:18,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2022-02-18 17:23:18,770 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
[2022-02-18 17:23:18,770 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:23:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:23:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2016520892, now seen corresponding path program 8 times
[2022-02-18 17:23:18,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:23:18,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809396842]
[2022-02-18 17:23:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:23:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:23:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:23:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:19,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:23:19,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809396842]
[2022-02-18 17:23:19,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809396842] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:23:19,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362972750]
[2022-02-18 17:23:19,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:23:19,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:23:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:23:19,586 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)
[2022-02-18 17:23:19,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2022-02-18 17:23:19,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:23:19,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:23:19,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:23:19,610 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:23:20,221 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:23:20,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 91
[2022-02-18 17:23:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:21,557 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:23:22,823 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:22,823 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:22,840 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:23:22,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 335 treesize of output 253
[2022-02-18 17:23:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:24,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362972750] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:23:24,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:23:24,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28
[2022-02-18 17:23:24,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864766480]
[2022-02-18 17:23:24,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:23:24,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:23:24,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:23:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:23:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:23:24,639 INFO L87 Difference]: Start difference. First operand 2109 states and 7510 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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)
[2022-02-18 17:23:33,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:23:33,280 INFO L93 Difference]: Finished difference Result 4578 states and 15074 transitions.
[2022-02-18 17:23:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:23:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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 26
[2022-02-18 17:23:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:23:33,288 INFO L225 Difference]: With dead ends: 4578
[2022-02-18 17:23:33,288 INFO L226 Difference]: Without dead ends: 4542
[2022-02-18 17:23:33,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1030, Invalid=4822, Unknown=0, NotChecked=0, Total=5852
[2022-02-18 17:23:33,289 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 623 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-02-18 17:23:33,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 324 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1172 Invalid, 0 Unknown, 230 Unchecked, 0.9s Time]
[2022-02-18 17:23:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states.
[2022-02-18 17:23:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 2177.
[2022-02-18 17:23:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2176 states have (on average 3.5565257352941178) internal successors, (7739), 2176 states have internal predecessors, (7739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 7739 transitions.
[2022-02-18 17:23:33,332 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 7739 transitions. Word has length 26
[2022-02-18 17:23:33,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:23:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 7739 transitions.
[2022-02-18 17:23:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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)
[2022-02-18 17:23:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 7739 transitions.
[2022-02-18 17:23:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:23:33,336 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:23:33,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:23:33,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2022-02-18 17:23:33,536 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
[2022-02-18 17:23:33,536 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:23:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:23:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 784538682, now seen corresponding path program 9 times
[2022-02-18 17:23:33,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:23:33,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361617671]
[2022-02-18 17:23:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:23:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:23:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:23:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:34,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:23:34,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361617671]
[2022-02-18 17:23:34,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361617671] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:23:34,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732341132]
[2022-02-18 17:23:34,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:23:34,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:23:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:23:34,145 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)
[2022-02-18 17:23:34,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2022-02-18 17:23:34,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:23:34,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:23:34,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:23:34,172 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:23:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:23:34,836 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:34,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:23:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:35,140 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:23:36,610 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:23:36,629 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:23:36,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 455 treesize of output 333
[2022-02-18 17:23:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:40,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732341132] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:23:40,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:23:40,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:23:40,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993338915]
[2022-02-18 17:23:40,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:23:40,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:23:40,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:23:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:23:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:23:40,762 INFO L87 Difference]: Start difference. First operand 2177 states and 7739 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:23:47,439 INFO L93 Difference]: Finished difference Result 4623 states and 14847 transitions.
[2022-02-18 17:23:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:23:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:23:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:23:47,448 INFO L225 Difference]: With dead ends: 4623
[2022-02-18 17:23:47,448 INFO L226 Difference]: Without dead ends: 4593
[2022-02-18 17:23:47,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=963, Invalid=4149, Unknown=0, NotChecked=0, Total=5112
[2022-02-18 17:23:47,449 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 567 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:23:47,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 335 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1348 Invalid, 0 Unknown, 23 Unchecked, 1.0s Time]
[2022-02-18 17:23:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states.
[2022-02-18 17:23:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 2198.
[2022-02-18 17:23:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 3.5616750113791533) internal successors, (7825), 2197 states have internal predecessors, (7825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 7825 transitions.
[2022-02-18 17:23:47,495 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 7825 transitions. Word has length 26
[2022-02-18 17:23:47,496 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:23:47,496 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 7825 transitions.
[2022-02-18 17:23:47,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:23:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 7825 transitions.
[2022-02-18 17:23:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:23:47,500 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:23:47,500 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:23:47,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2022-02-18 17:23:47,714 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
[2022-02-18 17:23:47,714 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:23:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:23:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1377331970, now seen corresponding path program 10 times
[2022-02-18 17:23:47,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:23:47,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921007770]
[2022-02-18 17:23:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:23:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:23:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:23:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:48,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:23:48,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921007770]
[2022-02-18 17:23:48,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921007770] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:23:48,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319331988]
[2022-02-18 17:23:48,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:23:48,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:23:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:23:48,593 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)
[2022-02-18 17:23:48,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2022-02-18 17:23:48,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:23:48,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:23:48,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:23:48,616 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:23:49,186 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:23:49,190 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:23:49,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:23:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:49,667 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:23:50,788 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:23:50,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 335 treesize of output 261
[2022-02-18 17:23:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:23:53,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319331988] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:23:53,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:23:53,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:23:53,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842371430]
[2022-02-18 17:23:53,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:23:53,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:23:53,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:23:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:23:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:23:53,035 INFO L87 Difference]: Start difference. First operand 2198 states and 7825 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:24:03,870 INFO L93 Difference]: Finished difference Result 4537 states and 14731 transitions.
[2022-02-18 17:24:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2022-02-18 17:24:03,870 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:24:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:24:03,878 INFO L225 Difference]: With dead ends: 4537
[2022-02-18 17:24:03,878 INFO L226 Difference]: Without dead ends: 4500
[2022-02-18 17:24:03,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1007, Invalid=6475, Unknown=0, NotChecked=0, Total=7482
[2022-02-18 17:24:03,879 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 371 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-02-18 17:24:03,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 560 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-02-18 17:24:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states.
[2022-02-18 17:24:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2189.
[2022-02-18 17:24:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 3.5658135283363803) internal successors, (7802), 2188 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 7802 transitions.
[2022-02-18 17:24:03,932 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 7802 transitions. Word has length 26
[2022-02-18 17:24:03,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:24:03,932 INFO L470 AbstractCegarLoop]: Abstraction has 2189 states and 7802 transitions.
[2022-02-18 17:24:03,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 7802 transitions.
[2022-02-18 17:24:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:24:03,936 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:24:03,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:24:03,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0
[2022-02-18 17:24:04,136 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
[2022-02-18 17:24:04,136 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:24:04,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:24:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash -635282148, now seen corresponding path program 11 times
[2022-02-18 17:24:04,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:24:04,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541959402]
[2022-02-18 17:24:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:24:04,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:24:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:24:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:04,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:24:04,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541959402]
[2022-02-18 17:24:04,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541959402] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:24:04,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489014210]
[2022-02-18 17:24:04,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:24:04,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:24:04,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:24:04,681 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)
[2022-02-18 17:24:04,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2022-02-18 17:24:04,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:24:04,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:24:04,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:24:04,708 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:24:05,277 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:24:05,277 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:24:05,282 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:24:05,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 83
[2022-02-18 17:24:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:05,921 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:24:06,927 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:24:06,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 269
[2022-02-18 17:24:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:09,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489014210] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:24:09,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:24:09,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:24:09,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225810903]
[2022-02-18 17:24:09,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:24:09,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:24:09,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:24:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:24:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:24:09,212 INFO L87 Difference]: Start difference. First operand 2189 states and 7802 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:24:19,486 INFO L93 Difference]: Finished difference Result 4320 states and 13876 transitions.
[2022-02-18 17:24:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-02-18 17:24:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:24:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:24:19,493 INFO L225 Difference]: With dead ends: 4320
[2022-02-18 17:24:19,493 INFO L226 Difference]: Without dead ends: 4260
[2022-02-18 17:24:19,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1114, Invalid=7076, Unknown=0, NotChecked=0, Total=8190
[2022-02-18 17:24:19,494 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 480 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2022-02-18 17:24:19,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 461 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2022-02-18 17:24:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states.
[2022-02-18 17:24:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 2213.
[2022-02-18 17:24:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2212 states have (on average 3.5687160940325495) internal successors, (7894), 2212 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 7894 transitions.
[2022-02-18 17:24:19,537 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 7894 transitions. Word has length 26
[2022-02-18 17:24:19,537 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:24:19,537 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 7894 transitions.
[2022-02-18 17:24:19,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 7894 transitions.
[2022-02-18 17:24:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:24:19,551 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:24:19,551 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:24:19,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2022-02-18 17:24:19,751 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
[2022-02-18 17:24:19,751 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:24:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:24:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash -705646396, now seen corresponding path program 12 times
[2022-02-18 17:24:19,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:24:19,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193844220]
[2022-02-18 17:24:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:24:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:24:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:24:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:20,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:24:20,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193844220]
[2022-02-18 17:24:20,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193844220] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:24:20,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487585421]
[2022-02-18 17:24:20,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:24:20,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:24:20,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:24:20,196 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)
[2022-02-18 17:24:20,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2022-02-18 17:24:20,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:24:20,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:24:20,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:24:20,221 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:24:20,743 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:24:20,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:24:20,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:24:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:24:22,721 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:24:22,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 269
[2022-02-18 17:24:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:27,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487585421] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:24:27,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:24:27,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:24:27,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498825775]
[2022-02-18 17:24:27,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:24:27,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:24:27,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:24:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:24:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:24:27,482 INFO L87 Difference]: Start difference. First operand 2213 states and 7894 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:24:38,132 INFO L93 Difference]: Finished difference Result 4637 states and 15221 transitions.
[2022-02-18 17:24:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-02-18 17:24:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:24:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:24:38,140 INFO L225 Difference]: With dead ends: 4637
[2022-02-18 17:24:38,140 INFO L226 Difference]: Without dead ends: 4607
[2022-02-18 17:24:38,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1053, Invalid=7137, Unknown=0, NotChecked=0, Total=8190
[2022-02-18 17:24:38,140 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 377 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-02-18 17:24:38,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 473 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-02-18 17:24:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states.
[2022-02-18 17:24:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 2251.
[2022-02-18 17:24:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 3.565777777777778) internal successors, (8023), 2250 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 8023 transitions.
[2022-02-18 17:24:38,184 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 8023 transitions. Word has length 26
[2022-02-18 17:24:38,184 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:24:38,184 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 8023 transitions.
[2022-02-18 17:24:38,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 8023 transitions.
[2022-02-18 17:24:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:24:38,187 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:24:38,188 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:24:38,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2022-02-18 17:24:38,393 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
[2022-02-18 17:24:38,393 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:24:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:24:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1043334006, now seen corresponding path program 13 times
[2022-02-18 17:24:38,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:24:38,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463519857]
[2022-02-18 17:24:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:24:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:24:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:24:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:39,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:24:39,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463519857]
[2022-02-18 17:24:39,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463519857] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:24:39,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128968962]
[2022-02-18 17:24:39,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:24:39,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:24:39,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:24:39,042 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)
[2022-02-18 17:24:39,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2022-02-18 17:24:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:24:39,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:24:39,068 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:24:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:24:39,615 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:24:39,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:24:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:40,196 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:24:41,492 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:24:41,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 335 treesize of output 261
[2022-02-18 17:24:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:44,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128968962] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:24:44,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:24:44,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:24:44,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240940353]
[2022-02-18 17:24:44,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:24:44,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:24:44,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:24:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:24:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:24:44,750 INFO L87 Difference]: Start difference. First operand 2251 states and 8023 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:24:53,006 INFO L93 Difference]: Finished difference Result 4402 states and 14468 transitions.
[2022-02-18 17:24:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2022-02-18 17:24:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:24:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:24:53,014 INFO L225 Difference]: With dead ends: 4402
[2022-02-18 17:24:53,014 INFO L226 Difference]: Without dead ends: 4357
[2022-02-18 17:24:53,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=791, Invalid=5215, Unknown=0, NotChecked=0, Total=6006
[2022-02-18 17:24:53,015 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 343 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:24:53,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 386 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2022-02-18 17:24:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states.
[2022-02-18 17:24:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 2243.
[2022-02-18 17:24:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2242 states have (on average 3.569134701159679) internal successors, (8002), 2242 states have internal predecessors, (8002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 8002 transitions.
[2022-02-18 17:24:53,059 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 8002 transitions. Word has length 26
[2022-02-18 17:24:53,059 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:24:53,059 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 8002 transitions.
[2022-02-18 17:24:53,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:24:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 8002 transitions.
[2022-02-18 17:24:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:24:53,063 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:24:53,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:24:53,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2022-02-18 17:24:53,264 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
[2022-02-18 17:24:53,264 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:24:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:24:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash -913979680, now seen corresponding path program 14 times
[2022-02-18 17:24:53,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:24:53,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364568082]
[2022-02-18 17:24:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:24:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:24:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:24:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:53,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:24:53,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364568082]
[2022-02-18 17:24:53,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364568082] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:24:53,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994025802]
[2022-02-18 17:24:53,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:24:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:24:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:24:53,534 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)
[2022-02-18 17:24:53,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2022-02-18 17:24:53,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:24:53,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:24:53,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:24:53,565 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:24:54,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:24:54,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 91
[2022-02-18 17:24:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:55,653 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:24:56,903 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:24:56,903 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:24:56,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:24:56,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 347 treesize of output 261
[2022-02-18 17:24:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:24:58,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994025802] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:24:58,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:24:58,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:24:58,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983272749]
[2022-02-18 17:24:58,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:24:58,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:24:58,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:24:58,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:24:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:24:58,928 INFO L87 Difference]: Start difference. First operand 2243 states and 8002 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:25:18,778 INFO L93 Difference]: Finished difference Result 5717 states and 18529 transitions.
[2022-02-18 17:25:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states.
[2022-02-18 17:25:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:25:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:25:18,788 INFO L225 Difference]: With dead ends: 5717
[2022-02-18 17:25:18,788 INFO L226 Difference]: Without dead ends: 5643
[2022-02-18 17:25:18,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5160 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2470, Invalid=11572, Unknown=0, NotChecked=0, Total=14042
[2022-02-18 17:25:18,789 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 710 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-02-18 17:25:18,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 511 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-02-18 17:25:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states.
[2022-02-18 17:25:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 2345.
[2022-02-18 17:25:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2344 states have (on average 3.564419795221843) internal successors, (8355), 2344 states have internal predecessors, (8355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 8355 transitions.
[2022-02-18 17:25:18,863 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 8355 transitions. Word has length 26
[2022-02-18 17:25:18,863 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:25:18,863 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 8355 transitions.
[2022-02-18 17:25:18,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 8355 transitions.
[2022-02-18 17:25:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:25:18,866 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:25:18,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:25:18,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2022-02-18 17:25:19,066 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
[2022-02-18 17:25:19,067 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:25:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:25:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1606033876, now seen corresponding path program 15 times
[2022-02-18 17:25:19,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:25:19,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131466430]
[2022-02-18 17:25:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:25:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:25:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:25:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:19,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:25:19,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131466430]
[2022-02-18 17:25:19,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131466430] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:25:19,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510866614]
[2022-02-18 17:25:19,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:25:19,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:25:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:25:19,386 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)
[2022-02-18 17:25:19,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2022-02-18 17:25:19,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:25:19,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:25:19,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core
[2022-02-18 17:25:19,414 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:25:19,810 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:25:19,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 91
[2022-02-18 17:25:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:21,358 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:25:22,517 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:25:22,517 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:25:22,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:25:22,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 347 treesize of output 261
[2022-02-18 17:25:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:24,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510866614] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:25:24,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:25:24,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28
[2022-02-18 17:25:24,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990006177]
[2022-02-18 17:25:24,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:25:24,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:25:24,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:25:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:25:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:25:24,201 INFO L87 Difference]: Start difference. First operand 2345 states and 8355 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:25:34,322 INFO L93 Difference]: Finished difference Result 4725 states and 15681 transitions.
[2022-02-18 17:25:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-02-18 17:25:34,322 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:25:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:25:34,330 INFO L225 Difference]: With dead ends: 4725
[2022-02-18 17:25:34,331 INFO L226 Difference]: Without dead ends: 4675
[2022-02-18 17:25:34,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1742 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1074, Invalid=4778, Unknown=0, NotChecked=0, Total=5852
[2022-02-18 17:25:34,331 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 605 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-02-18 17:25:34,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 342 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-02-18 17:25:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states.
[2022-02-18 17:25:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 2384.
[2022-02-18 17:25:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 2383 states have (on average 3.556021821233739) internal successors, (8474), 2383 states have internal predecessors, (8474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 8474 transitions.
[2022-02-18 17:25:34,401 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 8474 transitions. Word has length 26
[2022-02-18 17:25:34,401 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:25:34,401 INFO L470 AbstractCegarLoop]: Abstraction has 2384 states and 8474 transitions.
[2022-02-18 17:25:34,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 8474 transitions.
[2022-02-18 17:25:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:25:34,404 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:25:34,404 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:25:34,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2022-02-18 17:25:34,604 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
[2022-02-18 17:25:34,605 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:25:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:25:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 193303520, now seen corresponding path program 16 times
[2022-02-18 17:25:34,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:25:34,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145160589]
[2022-02-18 17:25:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:25:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:25:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:25:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:35,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:25:35,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145160589]
[2022-02-18 17:25:35,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145160589] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:25:35,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717872726]
[2022-02-18 17:25:35,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:25:35,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:25:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:25:35,221 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)
[2022-02-18 17:25:35,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2022-02-18 17:25:35,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:25:35,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:25:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:25:35,248 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:25:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:25:35,704 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:25:35,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 65
[2022-02-18 17:25:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:36,043 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:25:37,732 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:25:37,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 467 treesize of output 333
[2022-02-18 17:25:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:41,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717872726] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:25:41,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:25:41,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23
[2022-02-18 17:25:41,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332253003]
[2022-02-18 17:25:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:25:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-02-18 17:25:41,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:25:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-02-18 17:25:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506
[2022-02-18 17:25:41,682 INFO L87 Difference]: Start difference. First operand 2384 states and 8474 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:25:45,396 INFO L93 Difference]: Finished difference Result 3623 states and 12030 transitions.
[2022-02-18 17:25:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-02-18 17:25:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:25:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:25:45,403 INFO L225 Difference]: With dead ends: 3623
[2022-02-18 17:25:45,403 INFO L226 Difference]: Without dead ends: 3593
[2022-02-18 17:25:45,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640
[2022-02-18 17:25:45,404 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 198 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-02-18 17:25:45,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 286 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1113 Invalid, 0 Unknown, 150 Unchecked, 0.7s Time]
[2022-02-18 17:25:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states.
[2022-02-18 17:25:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 2421.
[2022-02-18 17:25:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2420 states have (on average 3.5504132231404957) internal successors, (8592), 2420 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 8592 transitions.
[2022-02-18 17:25:45,453 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 8592 transitions. Word has length 26
[2022-02-18 17:25:45,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:25:45,454 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 8592 transitions.
[2022-02-18 17:25:45,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:25:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 8592 transitions.
[2022-02-18 17:25:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:25:45,457 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:25:45,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:25:45,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0
[2022-02-18 17:25:45,657 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
[2022-02-18 17:25:45,658 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:25:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:25:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1764129120, now seen corresponding path program 17 times
[2022-02-18 17:25:45,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:25:45,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240328357]
[2022-02-18 17:25:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:25:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:25:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:25:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:46,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:25:46,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240328357]
[2022-02-18 17:25:46,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240328357] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:25:46,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382716260]
[2022-02-18 17:25:46,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:25:46,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:25:46,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:25:46,086 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)
[2022-02-18 17:25:46,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2022-02-18 17:25:46,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:25:46,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:25:46,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:25:46,111 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:25:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:25:46,519 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:25:46,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 73
[2022-02-18 17:25:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:47,463 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:25:48,585 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:25:48,604 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:25:48,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 355 treesize of output 269
[2022-02-18 17:25:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:25:53,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382716260] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:25:53,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:25:53,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25
[2022-02-18 17:25:53,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206017920]
[2022-02-18 17:25:53,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:25:53,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:25:53,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:25:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:25:53,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:25:53,568 INFO L87 Difference]: Start difference. First operand 2421 states and 8592 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:26:01,537 INFO L93 Difference]: Finished difference Result 4910 states and 15923 transitions.
[2022-02-18 17:26:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:26:01,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:26:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:26:01,545 INFO L225 Difference]: With dead ends: 4910
[2022-02-18 17:26:01,545 INFO L226 Difference]: Without dead ends: 4815
[2022-02-18 17:26:01,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=948, Invalid=4164, Unknown=0, NotChecked=0, Total=5112
[2022-02-18 17:26:01,545 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 406 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-02-18 17:26:01,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 365 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1156 Invalid, 0 Unknown, 373 Unchecked, 0.8s Time]
[2022-02-18 17:26:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states.
[2022-02-18 17:26:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 2534.
[2022-02-18 17:26:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2533 states have (on average 3.549545992893802) internal successors, (8991), 2533 states have internal predecessors, (8991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 8991 transitions.
[2022-02-18 17:26:01,592 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 8991 transitions. Word has length 26
[2022-02-18 17:26:01,592 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:26:01,592 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 8991 transitions.
[2022-02-18 17:26:01,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 8991 transitions.
[2022-02-18 17:26:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:26:01,596 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:26:01,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:26:01,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0
[2022-02-18 17:26:01,797 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
[2022-02-18 17:26:01,797 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:26:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:26:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -340731392, now seen corresponding path program 18 times
[2022-02-18 17:26:01,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:26:01,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007308283]
[2022-02-18 17:26:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:26:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:26:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:02,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:26:02,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007308283]
[2022-02-18 17:26:02,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007308283] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:26:02,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450595923]
[2022-02-18 17:26:02,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:26:02,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:26:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:26:02,331 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)
[2022-02-18 17:26:02,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2022-02-18 17:26:02,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:26:02,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:26:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:26:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:26:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:03,005 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:26:03,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:26:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:03,331 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:26:04,545 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:26:04,564 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:26:04,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 339 treesize of output 261
[2022-02-18 17:26:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:10,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450595923] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:26:10,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:26:10,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:26:10,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238467379]
[2022-02-18 17:26:10,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:26:10,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:26:10,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:26:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:26:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:26:10,663 INFO L87 Difference]: Start difference. First operand 2534 states and 8991 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:26:16,073 INFO L93 Difference]: Finished difference Result 4511 states and 14825 transitions.
[2022-02-18 17:26:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-02-18 17:26:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:26:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:26:16,081 INFO L225 Difference]: With dead ends: 4511
[2022-02-18 17:26:16,081 INFO L226 Difference]: Without dead ends: 4469
[2022-02-18 17:26:16,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=738, Invalid=3168, Unknown=0, NotChecked=0, Total=3906
[2022-02-18 17:26:16,082 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 384 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-02-18 17:26:16,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 291 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 702 Invalid, 0 Unknown, 398 Unchecked, 0.6s Time]
[2022-02-18 17:26:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states.
[2022-02-18 17:26:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2586.
[2022-02-18 17:26:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2585 states have (on average 3.546615087040619) internal successors, (9168), 2585 states have internal predecessors, (9168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 9168 transitions.
[2022-02-18 17:26:16,142 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 9168 transitions. Word has length 26
[2022-02-18 17:26:16,142 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:26:16,142 INFO L470 AbstractCegarLoop]: Abstraction has 2586 states and 9168 transitions.
[2022-02-18 17:26:16,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 9168 transitions.
[2022-02-18 17:26:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:26:16,146 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:26:16,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:26:16,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2022-02-18 17:26:16,359 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
[2022-02-18 17:26:16,359 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:26:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:26:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1958264172, now seen corresponding path program 19 times
[2022-02-18 17:26:16,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:26:16,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126705987]
[2022-02-18 17:26:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:26:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:26:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:16,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:26:16,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126705987]
[2022-02-18 17:26:16,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126705987] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:26:16,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276785709]
[2022-02-18 17:26:16,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:26:16,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:26:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:26:16,746 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)
[2022-02-18 17:26:16,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2022-02-18 17:26:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:16,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:26:16,772 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:26:17,143 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:17,143 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:17,148 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:26:17,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 105
[2022-02-18 17:26:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:17,938 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:26:19,388 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:26:19,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 411 treesize of output 309
[2022-02-18 17:26:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:25,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276785709] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:26:25,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:26:25,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:26:25,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445264355]
[2022-02-18 17:26:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:26:25,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:26:25,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:26:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:26:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:26:25,603 INFO L87 Difference]: Start difference. First operand 2586 states and 9168 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:26:31,602 INFO L93 Difference]: Finished difference Result 4636 states and 15400 transitions.
[2022-02-18 17:26:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2022-02-18 17:26:31,602 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:26:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:26:31,611 INFO L225 Difference]: With dead ends: 4636
[2022-02-18 17:26:31,611 INFO L226 Difference]: Without dead ends: 4598
[2022-02-18 17:26:31,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=739, Invalid=3953, Unknown=0, NotChecked=0, Total=4692
[2022-02-18 17:26:31,612 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 343 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:26:31,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 362 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-02-18 17:26:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states.
[2022-02-18 17:26:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 2592.
[2022-02-18 17:26:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 3.5476649942107294) internal successors, (9192), 2591 states have internal predecessors, (9192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 9192 transitions.
[2022-02-18 17:26:31,662 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 9192 transitions. Word has length 26
[2022-02-18 17:26:31,662 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:26:31,662 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 9192 transitions.
[2022-02-18 17:26:31,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 9192 transitions.
[2022-02-18 17:26:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:26:31,665 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:26:31,666 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:26:31,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2022-02-18 17:26:31,866 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
[2022-02-18 17:26:31,866 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:26:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:26:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 646760220, now seen corresponding path program 20 times
[2022-02-18 17:26:31,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:26:31,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137106221]
[2022-02-18 17:26:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:26:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:26:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:32,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:26:32,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137106221]
[2022-02-18 17:26:32,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137106221] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:26:32,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196900033]
[2022-02-18 17:26:32,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:26:32,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:26:32,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:26:32,303 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)
[2022-02-18 17:26:32,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2022-02-18 17:26:32,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:26:32,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:26:32,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:26:32,334 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:26:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:32,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:26:32,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 73
[2022-02-18 17:26:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:33,552 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:26:34,834 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size
[2022-02-18 17:26:34,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 355 treesize of output 269
[2022-02-18 17:26:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:41,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196900033] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:26:41,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:26:41,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26
[2022-02-18 17:26:41,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303482251]
[2022-02-18 17:26:41,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:26:41,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:26:41,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:26:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:26:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:26:41,878 INFO L87 Difference]: Start difference. First operand 2592 states and 9192 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:26:49,657 INFO L93 Difference]: Finished difference Result 4831 states and 15980 transitions.
[2022-02-18 17:26:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-18 17:26:49,657 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:26:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:26:49,666 INFO L225 Difference]: With dead ends: 4831
[2022-02-18 17:26:49,666 INFO L226 Difference]: Without dead ends: 4766
[2022-02-18 17:26:49,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=813, Invalid=4737, Unknown=0, NotChecked=0, Total=5550
[2022-02-18 17:26:49,667 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 355 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:26:49,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 405 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-02-18 17:26:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states.
[2022-02-18 17:26:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 2606.
[2022-02-18 17:26:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 3.5485604606525913) internal successors, (9244), 2605 states have internal predecessors, (9244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 9244 transitions.
[2022-02-18 17:26:49,717 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 9244 transitions. Word has length 26
[2022-02-18 17:26:49,717 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:26:49,717 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 9244 transitions.
[2022-02-18 17:26:49,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 9244 transitions.
[2022-02-18 17:26:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:26:49,720 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:26:49,720 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:26:49,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2022-02-18 17:26:49,932 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
[2022-02-18 17:26:49,932 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:26:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:26:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash 902763630, now seen corresponding path program 37 times
[2022-02-18 17:26:49,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:26:49,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096161977]
[2022-02-18 17:26:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:26:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:26:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:50,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:26:50,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096161977]
[2022-02-18 17:26:50,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096161977] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:26:50,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308387250]
[2022-02-18 17:26:50,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:26:50,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:26:50,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:26:50,696 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)
[2022-02-18 17:26:50,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2022-02-18 17:26:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:50,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:26:50,722 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:26:51,387 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:26:51,388 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:51,388 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:51,388 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:26:51,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 75
[2022-02-18 17:26:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:26:52,664 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:26:52,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 379 treesize of output 261
[2022-02-18 17:26:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:53,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308387250] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:26:53,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:26:53,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24
[2022-02-18 17:26:53,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778770775]
[2022-02-18 17:26:53,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:26:53,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:26:53,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:26:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:26:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:26:53,630 INFO L87 Difference]: Start difference. First operand 2606 states and 9244 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:26:57,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:26:57,515 INFO L93 Difference]: Finished difference Result 4288 states and 14482 transitions.
[2022-02-18 17:26:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-02-18 17:26:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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 26
[2022-02-18 17:26:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:26:57,523 INFO L225 Difference]: With dead ends: 4288
[2022-02-18 17:26:57,523 INFO L226 Difference]: Without dead ends: 4258
[2022-02-18 17:26:57,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=620, Invalid=3540, Unknown=0, NotChecked=0, Total=4160
[2022-02-18 17:26:57,524 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 241 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-02-18 17:26:57,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 335 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-02-18 17:26:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states.
[2022-02-18 17:26:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 2632.
[2022-02-18 17:26:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2632 states, 2631 states have (on average 3.5442797415431393) internal successors, (9325), 2631 states have internal predecessors, (9325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:26:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 9325 transitions.
[2022-02-18 17:26:57,569 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 9325 transitions. Word has length 26
[2022-02-18 17:26:57,569 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:26:57,569 INFO L470 AbstractCegarLoop]: Abstraction has 2632 states and 9325 transitions.
[2022-02-18 17:26:57,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:26:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 9325 transitions.
[2022-02-18 17:26:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:26:57,573 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:26:57,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:26:57,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0
[2022-02-18 17:26:57,773 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
[2022-02-18 17:26:57,774 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:26:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:26:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2020528988, now seen corresponding path program 38 times
[2022-02-18 17:26:57,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:26:57,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665769737]
[2022-02-18 17:26:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:26:57,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:26:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:26:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:58,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:26:58,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665769737]
[2022-02-18 17:26:58,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665769737] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:26:58,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090275066]
[2022-02-18 17:26:58,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:26:58,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:26:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:26:58,376 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)
[2022-02-18 17:26:58,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2022-02-18 17:26:58,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:26:58,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:26:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:26:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:26:59,063 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:59,065 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:26:59,075 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:26:59,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 101
[2022-02-18 17:26:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:26:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:27:01,406 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:01,407 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:01,408 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:01,419 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:27:01,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 375 treesize of output 247
[2022-02-18 17:27:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:02,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090275066] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:27:02,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:27:02,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:27:02,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842102820]
[2022-02-18 17:27:02,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:27:02,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:27:02,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:27:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:27:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:27:02,124 INFO L87 Difference]: Start difference. First operand 2632 states and 9325 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:27:13,999 INFO L93 Difference]: Finished difference Result 4411 states and 14783 transitions.
[2022-02-18 17:27:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:27:13,999 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:27:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:27:14,006 INFO L225 Difference]: With dead ends: 4411
[2022-02-18 17:27:14,007 INFO L226 Difference]: Without dead ends: 4281
[2022-02-18 17:27:14,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1055, Invalid=5107, Unknown=0, NotChecked=0, Total=6162
[2022-02-18 17:27:14,007 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 365 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:27:14,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 297 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-02-18 17:27:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states.
[2022-02-18 17:27:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 2686.
[2022-02-18 17:27:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2685 states have (on average 3.527001862197393) internal successors, (9470), 2685 states have internal predecessors, (9470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 9470 transitions.
[2022-02-18 17:27:14,050 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 9470 transitions. Word has length 26
[2022-02-18 17:27:14,050 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:27:14,050 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 9470 transitions.
[2022-02-18 17:27:14,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 9470 transitions.
[2022-02-18 17:27:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:27:14,053 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:27:14,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:27:14,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0
[2022-02-18 17:27:14,254 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
[2022-02-18 17:27:14,254 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:27:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:27:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1206563744, now seen corresponding path program 39 times
[2022-02-18 17:27:14,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:27:14,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816277787]
[2022-02-18 17:27:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:27:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:27:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:27:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:14,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:27:14,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816277787]
[2022-02-18 17:27:14,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816277787] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:27:14,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27291316]
[2022-02-18 17:27:14,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:27:14,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:27:14,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:27:14,711 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)
[2022-02-18 17:27:14,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2022-02-18 17:27:14,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-02-18 17:27:14,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:27:14,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:27:14,740 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:27:15,753 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:15,764 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:27:15,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 99
[2022-02-18 17:27:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:17,595 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:27:22,409 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:27:22,421 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:27:22,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 217
[2022-02-18 17:27:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:23,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27291316] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:27:23,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:27:23,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 31
[2022-02-18 17:27:23,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347896998]
[2022-02-18 17:27:23,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:27:23,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-02-18 17:27:23,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:27:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-02-18 17:27:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992
[2022-02-18 17:27:23,016 INFO L87 Difference]: Start difference. First operand 2686 states and 9470 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:27:32,672 INFO L93 Difference]: Finished difference Result 5196 states and 17713 transitions.
[2022-02-18 17:27:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2022-02-18 17:27:32,673 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:27:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:27:32,682 INFO L225 Difference]: With dead ends: 5196
[2022-02-18 17:27:32,682 INFO L226 Difference]: Without dead ends: 5181
[2022-02-18 17:27:32,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 32 SyntacticMatches, 13 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4132 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1855, Invalid=9275, Unknown=0, NotChecked=0, Total=11130
[2022-02-18 17:27:32,683 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 366 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 777 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-02-18 17:27:32,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 426 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1451 Invalid, 0 Unknown, 777 Unchecked, 0.9s Time]
[2022-02-18 17:27:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states.
[2022-02-18 17:27:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 2698.
[2022-02-18 17:27:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2697 states have (on average 3.5231738969225064) internal successors, (9502), 2697 states have internal predecessors, (9502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 9502 transitions.
[2022-02-18 17:27:32,732 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 9502 transitions. Word has length 26
[2022-02-18 17:27:32,732 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:27:32,732 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 9502 transitions.
[2022-02-18 17:27:32,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 9502 transitions.
[2022-02-18 17:27:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:27:32,736 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:27:32,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:27:32,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2022-02-18 17:27:32,936 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
[2022-02-18 17:27:32,937 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:27:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:27:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 267653912, now seen corresponding path program 40 times
[2022-02-18 17:27:32,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:27:32,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910281925]
[2022-02-18 17:27:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:27:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:27:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:27:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:33,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:27:33,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910281925]
[2022-02-18 17:27:33,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910281925] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:27:33,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532700333]
[2022-02-18 17:27:33,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:27:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:27:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:27:33,453 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)
[2022-02-18 17:27:33,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2022-02-18 17:27:33,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:27:33,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:27:33,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:27:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:27:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:27:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:27:34,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:34,073 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:34,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 75
[2022-02-18 17:27:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:34,217 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:27:35,462 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:27:35,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 363 treesize of output 245
[2022-02-18 17:27:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:36,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532700333] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:27:36,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:27:36,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24
[2022-02-18 17:27:36,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293193761]
[2022-02-18 17:27:36,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:27:36,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:27:36,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:27:36,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:27:36,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:27:36,649 INFO L87 Difference]: Start difference. First operand 2698 states and 9502 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 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)
[2022-02-18 17:27:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:27:42,679 INFO L93 Difference]: Finished difference Result 4478 states and 15012 transitions.
[2022-02-18 17:27:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-02-18 17:27:42,680 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 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 26
[2022-02-18 17:27:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:27:42,688 INFO L225 Difference]: With dead ends: 4478
[2022-02-18 17:27:42,689 INFO L226 Difference]: Without dead ends: 4448
[2022-02-18 17:27:42,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=926, Invalid=5880, Unknown=0, NotChecked=0, Total=6806
[2022-02-18 17:27:42,689 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 251 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:27:42,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 539 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2122 Invalid, 0 Unknown, 64 Unchecked, 1.2s Time]
[2022-02-18 17:27:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states.
[2022-02-18 17:27:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 2732.
[2022-02-18 17:27:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2731 states have (on average 3.5140974002196996) internal successors, (9597), 2731 states have internal predecessors, (9597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:27:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 9597 transitions.
[2022-02-18 17:27:42,738 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 9597 transitions. Word has length 26
[2022-02-18 17:27:42,738 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:27:42,738 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 9597 transitions.
[2022-02-18 17:27:42,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 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)
[2022-02-18 17:27:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 9597 transitions.
[2022-02-18 17:27:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:27:42,742 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:27:42,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:27:42,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0
[2022-02-18 17:27:42,943 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
[2022-02-18 17:27:42,943 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:27:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:27:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1794939168, now seen corresponding path program 21 times
[2022-02-18 17:27:42,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:27:42,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664973204]
[2022-02-18 17:27:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:27:42,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:27:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:27:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:43,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:27:43,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664973204]
[2022-02-18 17:27:43,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664973204] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:27:43,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017997932]
[2022-02-18 17:27:43,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:27:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:27:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:27:43,726 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)
[2022-02-18 17:27:43,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2022-02-18 17:27:43,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:27:43,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:27:43,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:27:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:27:44,999 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:27:45,000 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:27:45,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:27:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:27:45,320 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:27:46,607 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:27:46,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 379 treesize of output 313
[2022-02-18 17:28:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:07,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017997932] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:28:07,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:28:07,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:28:07,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090936615]
[2022-02-18 17:28:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:28:07,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:28:07,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:28:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:28:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:28:07,728 INFO L87 Difference]: Start difference. First operand 2732 states and 9597 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:28:13,864 INFO L93 Difference]: Finished difference Result 5708 states and 18244 transitions.
[2022-02-18 17:28:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-02-18 17:28:13,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:28:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:28:13,874 INFO L225 Difference]: With dead ends: 5708
[2022-02-18 17:28:13,874 INFO L226 Difference]: Without dead ends: 5678
[2022-02-18 17:28:13,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1064, Invalid=4048, Unknown=0, NotChecked=0, Total=5112
[2022-02-18 17:28:13,875 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 427 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-02-18 17:28:13,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 327 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 911 Invalid, 0 Unknown, 433 Unchecked, 0.7s Time]
[2022-02-18 17:28:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states.
[2022-02-18 17:28:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 2778.
[2022-02-18 17:28:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2777 states have (on average 3.5235866042491897) internal successors, (9785), 2777 states have internal predecessors, (9785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 9785 transitions.
[2022-02-18 17:28:13,932 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 9785 transitions. Word has length 26
[2022-02-18 17:28:13,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:28:13,932 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 9785 transitions.
[2022-02-18 17:28:13,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 9785 transitions.
[2022-02-18 17:28:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:28:13,937 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:28:13,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:28:13,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0
[2022-02-18 17:28:14,158 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
[2022-02-18 17:28:14,158 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:28:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:28:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1006120406, now seen corresponding path program 22 times
[2022-02-18 17:28:14,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:28:14,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202508049]
[2022-02-18 17:28:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:28:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:28:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:28:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:14,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:28:14,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202508049]
[2022-02-18 17:28:14,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202508049] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:28:14,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091895560]
[2022-02-18 17:28:14,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:28:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:28:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:28:14,943 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)
[2022-02-18 17:28:14,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2022-02-18 17:28:14,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:28:14,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:28:14,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:28:14,979 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:28:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:28:15,688 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:15,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:28:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:15,957 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:28:17,027 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:17,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:28:17,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 339 treesize of output 261
[2022-02-18 17:28:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:20,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091895560] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:28:20,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:28:20,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:28:20,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361600870]
[2022-02-18 17:28:20,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:28:20,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:28:20,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:28:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:28:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:28:20,226 INFO L87 Difference]: Start difference. First operand 2778 states and 9785 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:28:27,727 INFO L93 Difference]: Finished difference Result 6015 states and 19169 transitions.
[2022-02-18 17:28:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-02-18 17:28:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:28:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:28:27,742 INFO L225 Difference]: With dead ends: 6015
[2022-02-18 17:28:27,742 INFO L226 Difference]: Without dead ends: 5985
[2022-02-18 17:28:27,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1161, Invalid=4095, Unknown=0, NotChecked=0, Total=5256
[2022-02-18 17:28:27,743 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 517 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:28:27,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 412 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1357 Invalid, 0 Unknown, 176 Unchecked, 1.0s Time]
[2022-02-18 17:28:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states.
[2022-02-18 17:28:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 2823.
[2022-02-18 17:28:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2822 states have (on average 3.5240963855421685) internal successors, (9945), 2822 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 9945 transitions.
[2022-02-18 17:28:27,814 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 9945 transitions. Word has length 26
[2022-02-18 17:28:27,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:28:27,814 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 9945 transitions.
[2022-02-18 17:28:27,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 9945 transitions.
[2022-02-18 17:28:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:28:27,819 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:28:27,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:28:27,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0
[2022-02-18 17:28:28,019 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
[2022-02-18 17:28:28,019 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:28:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:28:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -205068792, now seen corresponding path program 23 times
[2022-02-18 17:28:28,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:28:28,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100103783]
[2022-02-18 17:28:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:28:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:28:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:28:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:28,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:28:28,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100103783]
[2022-02-18 17:28:28,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100103783] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:28:28,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119356821]
[2022-02-18 17:28:28,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:28:28,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:28:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:28:28,649 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)
[2022-02-18 17:28:28,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2022-02-18 17:28:28,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:28:28,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:28:28,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:28:28,673 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:28:29,391 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:28:29,391 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:29,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:28:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:29,750 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:28:30,926 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:30,945 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:28:30,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 339 treesize of output 261
[2022-02-18 17:28:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:34,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119356821] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:28:34,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:28:34,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:28:34,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559814851]
[2022-02-18 17:28:34,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:28:34,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:28:34,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:28:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:28:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:28:34,892 INFO L87 Difference]: Start difference. First operand 2823 states and 9945 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:28:44,507 INFO L93 Difference]: Finished difference Result 6000 states and 19520 transitions.
[2022-02-18 17:28:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-02-18 17:28:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:28:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:28:44,518 INFO L225 Difference]: With dead ends: 6000
[2022-02-18 17:28:44,518 INFO L226 Difference]: Without dead ends: 5963
[2022-02-18 17:28:44,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=831, Invalid=3725, Unknown=0, NotChecked=0, Total=4556
[2022-02-18 17:28:44,519 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 314 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 527 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-02-18 17:28:44,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 425 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 811 Invalid, 0 Unknown, 527 Unchecked, 0.7s Time]
[2022-02-18 17:28:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5963 states.
[2022-02-18 17:28:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5963 to 2886.
[2022-02-18 17:28:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2885 states have (on average 3.5351819757365686) internal successors, (10199), 2885 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 10199 transitions.
[2022-02-18 17:28:44,588 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 10199 transitions. Word has length 26
[2022-02-18 17:28:44,588 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:28:44,588 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 10199 transitions.
[2022-02-18 17:28:44,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:28:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 10199 transitions.
[2022-02-18 17:28:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:28:44,592 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:28:44,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:28:44,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0
[2022-02-18 17:28:44,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2022-02-18 17:28:44,793 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:28:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:28:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1698976514, now seen corresponding path program 24 times
[2022-02-18 17:28:44,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:28:44,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214933880]
[2022-02-18 17:28:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:28:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:28:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:28:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:45,379 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:28:45,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214933880]
[2022-02-18 17:28:45,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214933880] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:28:45,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971294478]
[2022-02-18 17:28:45,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:28:45,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:28:45,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:28:45,380 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)
[2022-02-18 17:28:45,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2022-02-18 17:28:45,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:28:45,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:28:45,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:28:45,406 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:28:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:28:46,137 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:28:46,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:28:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:46,885 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:28:48,130 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:48,130 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:28:48,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:28:48,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 339 treesize of output 253
[2022-02-18 17:28:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:28:49,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971294478] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:28:49,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:28:49,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:28:49,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308796800]
[2022-02-18 17:28:49,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:28:49,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:28:49,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:28:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:28:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:28:49,817 INFO L87 Difference]: Start difference. First operand 2886 states and 10199 transitions. Second operand has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:29:04,765 INFO L93 Difference]: Finished difference Result 7128 states and 23544 transitions.
[2022-02-18 17:29:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2022-02-18 17:29:04,765 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:29:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:29:04,778 INFO L225 Difference]: With dead ends: 7128
[2022-02-18 17:29:04,778 INFO L226 Difference]: Without dead ends: 7083
[2022-02-18 17:29:04,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7413 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=2744, Invalid=15346, Unknown=0, NotChecked=0, Total=18090
[2022-02-18 17:29:04,780 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 611 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1189 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:29:04,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 788 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1683 Invalid, 0 Unknown, 1189 Unchecked, 1.2s Time]
[2022-02-18 17:29:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7083 states.
[2022-02-18 17:29:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7083 to 2926.
[2022-02-18 17:29:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2925 states have (on average 3.545299145299145) internal successors, (10370), 2925 states have internal predecessors, (10370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 10370 transitions.
[2022-02-18 17:29:04,876 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 10370 transitions. Word has length 26
[2022-02-18 17:29:04,876 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:29:04,876 INFO L470 AbstractCegarLoop]: Abstraction has 2926 states and 10370 transitions.
[2022-02-18 17:29:04,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 10370 transitions.
[2022-02-18 17:29:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:29:04,880 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:29:04,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:29:04,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2022-02-18 17:29:05,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:29:05,080 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:29:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:29:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1822601572, now seen corresponding path program 25 times
[2022-02-18 17:29:05,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:29:05,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663648833]
[2022-02-18 17:29:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:29:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:29:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:29:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:05,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:29:05,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663648833]
[2022-02-18 17:29:05,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663648833] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:29:05,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549975423]
[2022-02-18 17:29:05,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:29:05,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:29:05,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:29:05,416 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)
[2022-02-18 17:29:05,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2022-02-18 17:29:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:29:05,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-18 17:29:05,448 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:29:05,889 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:29:05,893 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:05,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 83
[2022-02-18 17:29:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:06,567 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:29:07,532 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:29:07,551 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:07,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 343 treesize of output 265
[2022-02-18 17:29:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:11,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549975423] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:29:11,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:29:11,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24
[2022-02-18 17:29:11,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085471667]
[2022-02-18 17:29:11,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:29:11,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-02-18 17:29:11,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:29:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-02-18 17:29:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552
[2022-02-18 17:29:11,393 INFO L87 Difference]: Start difference. First operand 2926 states and 10370 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:29:21,921 INFO L93 Difference]: Finished difference Result 6606 states and 21211 transitions.
[2022-02-18 17:29:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2022-02-18 17:29:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:29:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:29:21,933 INFO L225 Difference]: With dead ends: 6606
[2022-02-18 17:29:21,933 INFO L226 Difference]: Without dead ends: 6553
[2022-02-18 17:29:21,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1566, Invalid=5406, Unknown=0, NotChecked=0, Total=6972
[2022-02-18 17:29:21,934 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 617 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2022-02-18 17:29:21,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 607 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1842 Invalid, 0 Unknown, 236 Unchecked, 1.3s Time]
[2022-02-18 17:29:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states.
[2022-02-18 17:29:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 2929.
[2022-02-18 17:29:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.5474726775956285) internal successors, (10387), 2928 states have internal predecessors, (10387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 10387 transitions.
[2022-02-18 17:29:22,004 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 10387 transitions. Word has length 26
[2022-02-18 17:29:22,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:29:22,004 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 10387 transitions.
[2022-02-18 17:29:22,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 10387 transitions.
[2022-02-18 17:29:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:29:22,009 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:29:22,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:29:22,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0
[2022-02-18 17:29:22,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2022-02-18 17:29:22,227 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:29:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:29:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash -629380028, now seen corresponding path program 26 times
[2022-02-18 17:29:22,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:29:22,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244288214]
[2022-02-18 17:29:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:29:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:29:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:29:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:22,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:29:22,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244288214]
[2022-02-18 17:29:22,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244288214] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:29:22,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881659300]
[2022-02-18 17:29:22,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-18 17:29:22,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:29:22,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:29:22,758 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)
[2022-02-18 17:29:22,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2022-02-18 17:29:22,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-18 17:29:22,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:29:22,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:29:22,785 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:29:23,412 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:29:23,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:23,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 115
[2022-02-18 17:29:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:25,255 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:29:26,517 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:29:26,518 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:29:26,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:26,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 339 treesize of output 253
[2022-02-18 17:29:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:28,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881659300] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:29:28,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:29:28,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:29:28,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692354002]
[2022-02-18 17:29:28,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:29:28,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:29:28,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:29:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:29:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:29:28,614 INFO L87 Difference]: Start difference. First operand 2929 states and 10387 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:29:47,391 INFO L93 Difference]: Finished difference Result 6603 states and 21763 transitions.
[2022-02-18 17:29:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states.
[2022-02-18 17:29:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:29:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:29:47,403 INFO L225 Difference]: With dead ends: 6603
[2022-02-18 17:29:47,403 INFO L226 Difference]: Without dead ends: 6558
[2022-02-18 17:29:47,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5436 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=2378, Invalid=12384, Unknown=0, NotChecked=0, Total=14762
[2022-02-18 17:29:47,404 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 585 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2022-02-18 17:29:47,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 699 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1854 Invalid, 0 Unknown, 317 Unchecked, 1.4s Time]
[2022-02-18 17:29:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states.
[2022-02-18 17:29:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 2942.
[2022-02-18 17:29:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2941 states have (on average 3.551513090785447) internal successors, (10445), 2941 states have internal predecessors, (10445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 10445 transitions.
[2022-02-18 17:29:47,465 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 10445 transitions. Word has length 26
[2022-02-18 17:29:47,465 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:29:47,465 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 10445 transitions.
[2022-02-18 17:29:47,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:29:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 10445 transitions.
[2022-02-18 17:29:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:29:47,469 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:29:47,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:29:47,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0
[2022-02-18 17:29:47,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2022-02-18 17:29:47,670 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:29:47,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:29:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1679960728, now seen corresponding path program 27 times
[2022-02-18 17:29:47,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:29:47,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595064905]
[2022-02-18 17:29:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:29:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:29:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:29:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:48,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:29:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595064905]
[2022-02-18 17:29:48,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595064905] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:29:48,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443589123]
[2022-02-18 17:29:48,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-18 17:29:48,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:29:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:29:48,081 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)
[2022-02-18 17:29:48,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2022-02-18 17:29:48,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-18 17:29:48,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:29:48,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-18 17:29:48,108 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:29:48,548 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:48,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 91
[2022-02-18 17:29:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:50,067 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:29:51,266 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:29:51,267 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:29:51,285 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:29:51,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 339 treesize of output 253
[2022-02-18 17:29:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:29:53,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443589123] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:29:53,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:29:53,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28
[2022-02-18 17:29:53,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615753389]
[2022-02-18 17:29:53,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:29:53,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:29:53,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:29:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:29:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:29:53,407 INFO L87 Difference]: Start difference. First operand 2942 states and 10445 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:30:10,736 INFO L93 Difference]: Finished difference Result 6795 states and 22452 transitions.
[2022-02-18 17:30:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2022-02-18 17:30:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:30:10,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:30:10,750 INFO L225 Difference]: With dead ends: 6795
[2022-02-18 17:30:10,750 INFO L226 Difference]: Without dead ends: 6751
[2022-02-18 17:30:10,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=1843, Invalid=8459, Unknown=0, NotChecked=0, Total=10302
[2022-02-18 17:30:10,750 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 637 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 824 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:30:10,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 589 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1559 Invalid, 0 Unknown, 824 Unchecked, 1.2s Time]
[2022-02-18 17:30:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states.
[2022-02-18 17:30:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 2937.
[2022-02-18 17:30:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2936 states have (on average 3.5497275204359675) internal successors, (10422), 2936 states have internal predecessors, (10422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 10422 transitions.
[2022-02-18 17:30:10,839 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 10422 transitions. Word has length 26
[2022-02-18 17:30:10,839 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:30:10,839 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 10422 transitions.
[2022-02-18 17:30:10,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 10422 transitions.
[2022-02-18 17:30:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:30:10,845 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:30:10,845 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:30:10,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2022-02-18 17:30:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2022-02-18 17:30:11,067 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:30:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:30:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash 358111584, now seen corresponding path program 28 times
[2022-02-18 17:30:11,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:30:11,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384759290]
[2022-02-18 17:30:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:30:11,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:30:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:30:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:11,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:30:11,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384759290]
[2022-02-18 17:30:11,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384759290] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:30:11,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374946377]
[2022-02-18 17:30:11,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-18 17:30:11,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:30:11,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:30:11,486 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)
[2022-02-18 17:30:11,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2022-02-18 17:30:11,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-18 17:30:11,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:30:11,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:30:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:30:11,914 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:30:11,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:30:11,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 81
[2022-02-18 17:30:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:13,310 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:30:14,394 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:30:14,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 323 treesize of output 273
[2022-02-18 17:30:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:31,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374946377] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:30:31,951 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:30:31,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25
[2022-02-18 17:30:31,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781416190]
[2022-02-18 17:30:31,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:30:31,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:30:31,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:30:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:30:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:30:31,951 INFO L87 Difference]: Start difference. First operand 2937 states and 10422 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:30:40,220 INFO L93 Difference]: Finished difference Result 5768 states and 18790 transitions.
[2022-02-18 17:30:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-02-18 17:30:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:30:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:30:40,230 INFO L225 Difference]: With dead ends: 5768
[2022-02-18 17:30:40,230 INFO L226 Difference]: Without dead ends: 5688
[2022-02-18 17:30:40,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1190, Invalid=5452, Unknown=0, NotChecked=0, Total=6642
[2022-02-18 17:30:40,231 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 427 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-02-18 17:30:40,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 382 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1282 Invalid, 0 Unknown, 241 Unchecked, 0.9s Time]
[2022-02-18 17:30:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states.
[2022-02-18 17:30:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 2944.
[2022-02-18 17:30:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2943 states have (on average 3.550118926265715) internal successors, (10448), 2943 states have internal predecessors, (10448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 10448 transitions.
[2022-02-18 17:30:40,289 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 10448 transitions. Word has length 26
[2022-02-18 17:30:40,289 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:30:40,289 INFO L470 AbstractCegarLoop]: Abstraction has 2944 states and 10448 transitions.
[2022-02-18 17:30:40,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 10448 transitions.
[2022-02-18 17:30:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:30:40,293 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:30:40,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:30:40,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0
[2022-02-18 17:30:40,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70
[2022-02-18 17:30:40,493 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:30:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:30:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 611956416, now seen corresponding path program 41 times
[2022-02-18 17:30:40,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:30:40,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988572897]
[2022-02-18 17:30:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:30:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:30:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:30:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:40,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:30:40,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988572897]
[2022-02-18 17:30:40,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988572897] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:30:40,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776596874]
[2022-02-18 17:30:40,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:30:40,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:30:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:30:40,903 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)
[2022-02-18 17:30:40,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2022-02-18 17:30:40,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:30:40,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:30:40,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:30:40,930 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:30:41,591 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:30:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:30:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:30:41,593 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:30:41,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 75
[2022-02-18 17:30:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:30:42,775 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:30:42,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 375 treesize of output 253
[2022-02-18 17:30:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:43,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776596874] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:30:43,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:30:43,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24
[2022-02-18 17:30:43,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385691021]
[2022-02-18 17:30:43,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:30:43,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:30:43,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:30:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:30:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:30:43,751 INFO L87 Difference]: Start difference. First operand 2944 states and 10448 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:30:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:30:50,931 INFO L93 Difference]: Finished difference Result 4953 states and 16689 transitions.
[2022-02-18 17:30:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-02-18 17:30:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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 26
[2022-02-18 17:30:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:30:50,939 INFO L225 Difference]: With dead ends: 4953
[2022-02-18 17:30:50,940 INFO L226 Difference]: Without dead ends: 4859
[2022-02-18 17:30:50,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2777 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1157, Invalid=6853, Unknown=0, NotChecked=0, Total=8010
[2022-02-18 17:30:50,940 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 326 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-02-18 17:30:50,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 459 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-02-18 17:30:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states.
[2022-02-18 17:30:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 2959.
[2022-02-18 17:30:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2958 states have (on average 3.555104800540906) internal successors, (10516), 2958 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:30:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 10516 transitions.
[2022-02-18 17:30:50,989 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 10516 transitions. Word has length 26
[2022-02-18 17:30:50,989 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:30:50,989 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 10516 transitions.
[2022-02-18 17:30:50,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 24 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)
[2022-02-18 17:30:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 10516 transitions.
[2022-02-18 17:30:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:30:50,993 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:30:50,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:30:51,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0
[2022-02-18 17:30:51,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:30:51,193 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:30:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:30:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1457232352, now seen corresponding path program 42 times
[2022-02-18 17:30:51,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:30:51,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895935072]
[2022-02-18 17:30:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:30:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:30:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:30:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:51,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:30:51,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895935072]
[2022-02-18 17:30:51,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895935072] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:30:51,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709709578]
[2022-02-18 17:30:51,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:30:51,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:30:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:30:51,677 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)
[2022-02-18 17:30:51,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2022-02-18 17:30:51,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2022-02-18 17:30:51,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:30:51,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:30:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:30:52,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:30:52,114 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:30:52,125 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:30:52,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 101
[2022-02-18 17:30:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:52,860 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:30:53,821 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:30:53,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 253
[2022-02-18 17:30:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:30:55,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709709578] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:30:55,475 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:30:55,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25
[2022-02-18 17:30:55,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897060612]
[2022-02-18 17:30:55,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:30:55,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:30:55,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:30:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:30:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:30:55,476 INFO L87 Difference]: Start difference. First operand 2959 states and 10516 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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)
[2022-02-18 17:31:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:31:19,510 INFO L93 Difference]: Finished difference Result 6950 states and 23233 transitions.
[2022-02-18 17:31:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states.
[2022-02-18 17:31:19,510 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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 26
[2022-02-18 17:31:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:31:19,522 INFO L225 Difference]: With dead ends: 6950
[2022-02-18 17:31:19,522 INFO L226 Difference]: Without dead ends: 6903
[2022-02-18 17:31:19,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13336 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=5026, Invalid=26836, Unknown=0, NotChecked=0, Total=31862
[2022-02-18 17:31:19,523 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 623 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2022-02-18 17:31:19,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 658 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2022-02-18 17:31:19,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states.
[2022-02-18 17:31:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 3069.
[2022-02-18 17:31:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 3.555410691003911) internal successors, (10908), 3068 states have internal predecessors, (10908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 10908 transitions.
[2022-02-18 17:31:19,585 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 10908 transitions. Word has length 26
[2022-02-18 17:31:19,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:31:19,585 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 10908 transitions.
[2022-02-18 17:31:19,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 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)
[2022-02-18 17:31:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 10908 transitions.
[2022-02-18 17:31:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:31:19,589 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:31:19,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:31:19,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0
[2022-02-18 17:31:19,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:31:19,789 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:31:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:31:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 692947996, now seen corresponding path program 43 times
[2022-02-18 17:31:19,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:31:19,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778019421]
[2022-02-18 17:31:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:31:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:31:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:31:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:20,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:31:20,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778019421]
[2022-02-18 17:31:20,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778019421] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:31:20,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891631769]
[2022-02-18 17:31:20,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-18 17:31:20,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:31:20,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:31:20,332 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)
[2022-02-18 17:31:20,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2022-02-18 17:31:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:31:20,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:31:20,365 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:31:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:31:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:31:20,901 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:31:20,901 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:31:20,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 75
[2022-02-18 17:31:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:21,070 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:31:22,043 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size
[2022-02-18 17:31:22,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 253
[2022-02-18 17:31:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:23,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891631769] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:31:23,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:31:23,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24
[2022-02-18 17:31:23,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747052074]
[2022-02-18 17:31:23,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:31:23,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2022-02-18 17:31:23,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:31:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2022-02-18 17:31:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600
[2022-02-18 17:31:23,030 INFO L87 Difference]: Start difference. First operand 3069 states and 10908 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:31:37,957 INFO L93 Difference]: Finished difference Result 6077 states and 20280 transitions.
[2022-02-18 17:31:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states.
[2022-02-18 17:31:37,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:31:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:31:37,969 INFO L225 Difference]: With dead ends: 6077
[2022-02-18 17:31:37,969 INFO L226 Difference]: Without dead ends: 6047
[2022-02-18 17:31:37,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6025 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=2566, Invalid=12934, Unknown=0, NotChecked=0, Total=15500
[2022-02-18 17:31:37,970 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 541 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-02-18 17:31:37,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 625 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2414 Invalid, 0 Unknown, 100 Unchecked, 1.5s Time]
[2022-02-18 17:31:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6047 states.
[2022-02-18 17:31:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6047 to 3077.
[2022-02-18 17:31:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 3.5578673602080624) internal successors, (10944), 3076 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 10944 transitions.
[2022-02-18 17:31:38,051 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 10944 transitions. Word has length 26
[2022-02-18 17:31:38,051 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:31:38,051 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 10944 transitions.
[2022-02-18 17:31:38,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 10944 transitions.
[2022-02-18 17:31:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:31:38,055 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:31:38,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:31:38,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0
[2022-02-18 17:31:38,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:31:38,256 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:31:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:31:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1196537974, now seen corresponding path program 29 times
[2022-02-18 17:31:38,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:31:38,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240490839]
[2022-02-18 17:31:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:31:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:31:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:31:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:38,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:31:38,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240490839]
[2022-02-18 17:31:38,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240490839] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:31:38,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54050969]
[2022-02-18 17:31:38,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-18 17:31:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:31:38,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:31:38,810 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)
[2022-02-18 17:31:38,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2022-02-18 17:31:38,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-18 17:31:38,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:31:38,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-02-18 17:31:38,844 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:31:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:31:39,580 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:31:39,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 75
[2022-02-18 17:31:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:39,872 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:31:41,239 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:31:41,260 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:31:41,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 459 treesize of output 333
[2022-02-18 17:31:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:50,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54050969] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:31:50,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:31:50,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-18 17:31:50,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412762133]
[2022-02-18 17:31:50,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:31:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-02-18 17:31:50,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:31:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-02-18 17:31:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650
[2022-02-18 17:31:50,693 INFO L87 Difference]: Start difference. First operand 3077 states and 10944 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-18 17:31:56,438 INFO L93 Difference]: Finished difference Result 5768 states and 18888 transitions.
[2022-02-18 17:31:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2022-02-18 17:31:56,439 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2022-02-18 17:31:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-18 17:31:56,449 INFO L225 Difference]: With dead ends: 5768
[2022-02-18 17:31:56,449 INFO L226 Difference]: Without dead ends: 5726
[2022-02-18 17:31:56,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=845, Invalid=3577, Unknown=0, NotChecked=0, Total=4422
[2022-02-18 17:31:56,450 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 394 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-02-18 17:31:56,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 332 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 908 Invalid, 0 Unknown, 352 Unchecked, 0.7s Time]
[2022-02-18 17:31:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states.
[2022-02-18 17:31:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 3062.
[2022-02-18 17:31:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3061 states have (on average 3.5583142763802678) internal successors, (10892), 3061 states have internal predecessors, (10892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 10892 transitions.
[2022-02-18 17:31:56,507 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 10892 transitions. Word has length 26
[2022-02-18 17:31:56,507 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-18 17:31:56,508 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 10892 transitions.
[2022-02-18 17:31:56,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-18 17:31:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 10892 transitions.
[2022-02-18 17:31:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-18 17:31:56,511 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-18 17:31:56,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-18 17:31:56,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0
[2022-02-18 17:31:56,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2022-02-18 17:31:56,712 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] ===
[2022-02-18 17:31:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-18 17:31:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2048965000, now seen corresponding path program 30 times
[2022-02-18 17:31:56,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-18 17:31:56,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395825722]
[2022-02-18 17:31:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-18 17:31:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-18 17:31:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-18 17:31:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:31:57,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-18 17:31:57,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395825722]
[2022-02-18 17:31:57,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395825722] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-18 17:31:57,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917780249]
[2022-02-18 17:31:57,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-18 17:31:57,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:31:57,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-18 17:31:57,044 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)
[2022-02-18 17:31:57,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2022-02-18 17:31:57,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-18 17:31:57,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-18 17:31:57,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-18 17:31:57,074 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-18 17:31:57,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-02-18 17:31:57,894 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:31:57,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 91
[2022-02-18 17:32:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:32:01,070 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-18 17:32:02,272 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:32:02,273 INFO L173 IndexEqualityManager]: detected equality via solver
[2022-02-18 17:32:02,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-02-18 17:32:02,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 323 treesize of output 257
[2022-02-18 17:32:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-18 17:32:04,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917780249] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-18 17:32:04,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-18 17:32:04,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-18 17:32:04,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939794162]
[2022-02-18 17:32:04,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-18 17:32:04,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-18 17:32:04,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-18 17:32:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-18 17:32:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756
[2022-02-18 17:32:04,487 INFO L87 Difference]: Start difference. First operand 3062 states and 10892 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
Received shutdown request...
[2022-02-18 17:32:24,193 WARN L244 SmtUtils]: Removed 3 from assertion stack
[2022-02-18 17:32:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states.
[2022-02-18 17:32:24,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6762 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=2485, Invalid=15071, Unknown=0, NotChecked=0, Total=17556
[2022-02-18 17:32:24,195 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 427 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-02-18 17:32:24,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 377 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1247 Invalid, 0 Unknown, 318 Unchecked, 1.0s Time]
[2022-02-18 17:32:24,196 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining)
[2022-02-18 17:32:24,199 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
[2022-02-18 17:32:24,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2022-02-18 17:32:24,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0
[2022-02-18 17:32:24,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-18 17:32:24,399 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3062states) and FLOYD_HOARE automaton (currently 121 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 80 for 9ms..
[2022-02-18 17:32:24,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining)
[2022-02-18 17:32:24,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining)
[2022-02-18 17:32:24,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining)
[2022-02-18 17:32:24,405 INFO L732 BasicCegarLoop]: Path program histogram: [43, 30, 1, 1, 1]
[2022-02-18 17:32:24,407 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-02-18 17:32:24,407 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-18 17:32:24,408 INFO L202 PluginConnector]: Adding new model min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 05:32:24 BasicIcfg
[2022-02-18 17:32:24,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: Toolchain (without parser) took 721233.40ms. Allocated memory was 199.2MB in the beginning and 631.2MB in the end (delta: 432.0MB). Free memory was 155.4MB in the beginning and 332.5MB in the end (delta: -177.1MB). Peak memory consumption was 255.4MB. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.08ms. Allocated memory is still 199.2MB. Free memory was 155.3MB in the beginning and 153.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: Boogie Preprocessor took 22.99ms. Allocated memory is still 199.2MB. Free memory was 153.8MB in the beginning and 152.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: RCFGBuilder took 206.32ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 143.5MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L158 Benchmark]: TraceAbstraction took 720965.41ms. Allocated memory was 199.2MB in the beginning and 631.2MB in the end (delta: 432.0MB). Free memory was 143.0MB in the beginning and 332.5MB in the end (delta: -189.6MB). Peak memory consumption was 242.8MB. Max. memory is 8.0GB.
[2022-02-18 17:32:24,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* Boogie PL CUP Parser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 23.08ms. Allocated memory is still 199.2MB. Free memory was 155.3MB in the beginning and 153.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 22.99ms. Allocated memory is still 199.2MB. Free memory was 153.8MB in the beginning and 152.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 206.32ms. Allocated memory is still 199.2MB. Free memory was 152.8MB in the beginning and 143.5MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 720965.41ms. Allocated memory was 199.2MB in the beginning and 631.2MB in the end (delta: 432.0MB). Free memory was 143.0MB in the beginning and 332.5MB in the end (delta: -189.6MB). Peak memory consumption was 242.8MB. 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: 66]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (3062states) and FLOYD_HOARE automaton (currently 121 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 80 for 9ms..
- TimeoutResultAtElement [Line: 59]: 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 (3062states) and FLOYD_HOARE automaton (currently 121 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 80 for 9ms..
- TimeoutResultAtElement [Line: 59]: 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 (3062states) and FLOYD_HOARE automaton (currently 121 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 80 for 9ms..
- TimeoutResultAtElement [Line: 60]: 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 (3062states) and FLOYD_HOARE automaton (currently 121 states, 28 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 80 for 9ms..
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 720.8s, OverallIterations: 76, TraceHistogramMax: 2, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.2s, AutomataDifference: 426.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27110 SdHoareTripleChecker+Valid, 53.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27110 mSDsluCounter, 22720 SdHoareTripleChecker+Invalid, 45.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6858 IncrementalHoareTripleChecker+Unchecked, 39777 mSDsCounter, 5385 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81383 IncrementalHoareTripleChecker+Invalid, 93626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5385 mSolverCounterUnsat, 2091 mSDtfsCounter, 81383 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7703 GetRequests, 2706 SyntacticMatches, 177 SemanticMatches, 4819 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150144 ImplicationChecksByTransitivity, 403.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3077occurred in iteration=74, InterpolantAutomatonStates: 3910, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 75 MinimizatonAttempts, 143046 StatesRemovedByMinimization, 75 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 272.9s InterpolantComputationTime, 3686 NumberOfCodeBlocks, 3683 NumberOfCodeBlocksAsserted, 232 NumberOfCheckSat, 5278 ConstructedInterpolants, 69 QuantifiedInterpolants, 172645 SizeOfPredicates, 840 NumberOfNonLiveVariables, 4743 ConjunctsInSsa, 1336 ConjunctsInUnsatCore, 222 InterpolantComputations, 3 PerfectInterpolantSequences, 174/1196 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