/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem05_label10.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 20:52:15,624 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-04-01 20:52:15,685 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 20:52:15,686 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 20:52:15,686 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 20:52:15,687 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 20:52:15,688 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 20:52:15,691 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-04-01 20:52:15,704 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 20:52:15,705 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 20:52:15,705 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 20:52:15,705 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 20:52:15,705 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 20:52:15,706 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 20:52:15,706 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-04-01 20:52:15,706 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-04-01 20:52:15,706 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-04-01 20:52:15,706 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 20:52:15,706 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 20:52:15,707 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 20:52:15,708 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:52:15,708 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 20:52:15,708 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-04-01 20:52:15,709 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-04-01 20:52:15,875 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 20:52:15,895 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 20:52:15,897 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 20:52:15,898 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 20:52:15,898 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 20:52:15,899 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label10.c
[2023-04-01 20:52:16,962 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 20:52:17,372 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 20:52:17,373 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label10.c
[2023-04-01 20:52:17,410 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7a6a652/3af56bdd2cf247b9b0e9c0e68d76cd02/FLAGb7ba278e5
[2023-04-01 20:52:17,422 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7a6a652/3af56bdd2cf247b9b0e9c0e68d76cd02
[2023-04-01 20:52:17,425 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 20:52:17,426 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 20:52:17,428 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 20:52:17,428 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 20:52:17,430 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 20:52:17,431 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:52:17" (1/1) ...
[2023-04-01 20:52:17,431 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cf5819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:17, skipping insertion in model container
[2023-04-01 20:52:17,432 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:52:17" (1/1) ...
[2023-04-01 20:52:17,437 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 20:52:17,581 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 20:52:18,725 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label10.c[380522,380535]
[2023-04-01 20:52:18,738 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:52:18,746 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 20:52:19,335 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label10.c[380522,380535]
[2023-04-01 20:52:19,340 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:52:19,375 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 20:52:19,375 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19 WrapperNode
[2023-04-01 20:52:19,376 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 20:52:19,377 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 20:52:19,377 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 20:52:19,406 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 20:52:19,414 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,415 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,475 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,476 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,603 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,636 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,661 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,680 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,723 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 20:52:19,724 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 20:52:19,724 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 20:52:19,724 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 20:52:19,725 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (1/1) ...
[2023-04-01 20:52:19,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:52:19,738 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:52:19,748 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)
[2023-04-01 20:52:19,773 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
[2023-04-01 20:52:19,796 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 20:52:19,797 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-01 20:52:19,798 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-04-01 20:52:19,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-04-01 20:52:19,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-04-01 20:52:19,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 20:52:19,799 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 20:52:19,800 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 20:52:19,891 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 20:52:19,893 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 20:52:24,863 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 20:52:24,880 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 20:52:24,880 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 20:52:24,883 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:52:24 BoogieIcfgContainer
[2023-04-01 20:52:24,883 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 20:52:24,938 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 20:52:24,938 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 20:52:24,940 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 20:52:24,940 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:52:17" (1/3) ...
[2023-04-01 20:52:24,941 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4a2966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:52:24, skipping insertion in model container
[2023-04-01 20:52:24,941 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:52:19" (2/3) ...
[2023-04-01 20:52:24,941 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4a2966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:52:24, skipping insertion in model container
[2023-04-01 20:52:24,941 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:52:24" (3/3) ...
[2023-04-01 20:52:24,942 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label10.c
[2023-04-01 20:52:24,957 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 20:52:24,957 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 20:52:25,030 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 20:52:25,035 INFO  L357      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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d3b385c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-04-01 20:52:25,035 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 20:52:25,046 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 20:52:25,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1700
[2023-04-01 20:52:25,122 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:52:25,123 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:52:25,124 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:52:25,127 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:52:25,128 INFO  L85        PathProgramCache]: Analyzing trace with hash 1941927074, now seen corresponding path program 1 times
[2023-04-01 20:52:25,134 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:52:25,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906816905]
[2023-04-01 20:52:25,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:52:25,135 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:52:25,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:52:31,641 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:52:31,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:52:31,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:52:31,718 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:52:31,718 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906816905]
[2023-04-01 20:52:31,719 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906816905] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:52:31,719 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:52:31,719 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-04-01 20:52:31,720 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485962072]
[2023-04-01 20:52:31,721 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:52:31,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:52:31,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:52:31,781 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:52:31,782 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-04-01 20:52:31,787 INFO  L87              Difference]: Start difference. First operand  has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 5 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 20:52:43,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:52:43,894 INFO  L93              Difference]: Finished difference Result 8124 states and 15411 transitions.
[2023-04-01 20:52:43,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:52:43,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1699
[2023-04-01 20:52:43,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:52:43,949 INFO  L225             Difference]: With dead ends: 8124
[2023-04-01 20:52:43,949 INFO  L226             Difference]: Without dead ends: 5834
[2023-04-01 20:52:43,961 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:52:43,967 INFO  L413           NwaCegarLoop]: 333 mSDtfsCounter, 6294 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 12692 mSolverCounterSat, 2990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6294 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 15682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2990 IncrementalHoareTripleChecker+Valid, 12692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time
[2023-04-01 20:52:43,968 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6294 Valid, 633 Invalid, 15682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2990 Valid, 12692 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time]
[2023-04-01 20:52:43,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5834 states.
[2023-04-01 20:52:44,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801.
[2023-04-01 20:52:44,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5801 states, 5731 states have (on average 1.614028965276566) internal successors, (9250), 5734 states have internal predecessors, (9250), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (98), 40 states have call predecessors, (98), 25 states have call successors, (98)
[2023-04-01 20:52:44,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions.
[2023-04-01 20:52:44,169 INFO  L78                 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1699
[2023-04-01 20:52:44,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:52:44,173 INFO  L495      AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions.
[2023-04-01 20:52:44,173 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 422.0) internal successors, (1688), 3 states have internal predecessors, (1688), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 20:52:44,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions.
[2023-04-01 20:52:44,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1709
[2023-04-01 20:52:44,230 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:52:44,231 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:52:44,231 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 20:52:44,232 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:52:44,232 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:52:44,233 INFO  L85        PathProgramCache]: Analyzing trace with hash -256915061, now seen corresponding path program 1 times
[2023-04-01 20:52:44,233 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:52:44,233 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979654924]
[2023-04-01 20:52:44,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:52:44,234 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:52:44,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:52:46,855 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:52:46,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:52:46,876 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:52:46,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:52:46,899 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:52:46,899 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:52:46,899 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979654924]
[2023-04-01 20:52:46,900 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979654924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:52:46,900 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:52:46,900 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-01 20:52:46,900 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77801874]
[2023-04-01 20:52:46,901 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:52:46,904 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-04-01 20:52:46,904 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:52:46,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-04-01 20:52:46,907 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-04-01 20:52:46,908 INFO  L87              Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand  has 8 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 5 states have internal predecessors, (1695), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:52:59,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:52:59,854 INFO  L93              Difference]: Finished difference Result 22514 states and 37516 transitions.
[2023-04-01 20:52:59,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-01 20:52:59,855 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 5 states have internal predecessors, (1695), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1708
[2023-04-01 20:52:59,855 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:52:59,949 INFO  L225             Difference]: With dead ends: 22514
[2023-04-01 20:52:59,950 INFO  L226             Difference]: Without dead ends: 16719
[2023-04-01 20:52:59,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2023-04-01 20:52:59,968 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 16686 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 15208 mSolverCounterSat, 5258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16686 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 20466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5258 IncrementalHoareTripleChecker+Valid, 15208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2023-04-01 20:52:59,969 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16686 Valid, 1283 Invalid, 20466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5258 Valid, 15208 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2023-04-01 20:52:59,984 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16719 states.
[2023-04-01 20:53:00,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 16670.
[2023-04-01 20:53:00,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16670 states, 16342 states have (on average 1.4486598947497247) internal successors, (23674), 16367 states have internal predecessors, (23674), 74 states have call successors, (74), 74 states have call predecessors, (74), 253 states have return successors, (1177), 228 states have call predecessors, (1177), 73 states have call successors, (1177)
[2023-04-01 20:53:00,382 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 24925 transitions.
[2023-04-01 20:53:00,383 INFO  L78                 Accepts]: Start accepts. Automaton has 16670 states and 24925 transitions. Word has length 1708
[2023-04-01 20:53:00,383 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:53:00,384 INFO  L495      AbstractCegarLoop]: Abstraction has 16670 states and 24925 transitions.
[2023-04-01 20:53:00,385 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 5 states have internal predecessors, (1695), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:53:00,385 INFO  L276                IsEmpty]: Start isEmpty. Operand 16670 states and 24925 transitions.
[2023-04-01 20:53:00,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1715
[2023-04-01 20:53:00,435 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:53:00,436 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:53:00,436 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 20:53:00,436 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:53:00,436 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:53:00,437 INFO  L85        PathProgramCache]: Analyzing trace with hash -345597323, now seen corresponding path program 1 times
[2023-04-01 20:53:00,437 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:53:00,437 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155156950]
[2023-04-01 20:53:00,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:00,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:53:00,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:01,828 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:53:01,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:01,842 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:53:01,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:01,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:01,860 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:53:01,860 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155156950]
[2023-04-01 20:53:01,861 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155156950] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:53:01,861 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:53:01,861 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:53:01,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776155133]
[2023-04-01 20:53:01,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:53:01,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:53:01,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:53:01,864 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:53:01,864 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:53:01,865 INFO  L87              Difference]: Start difference. First operand 16670 states and 24925 transitions. Second operand  has 7 states, 6 states have (on average 283.5) internal successors, (1701), 4 states have internal predecessors, (1701), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:53:09,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:53:09,834 INFO  L93              Difference]: Finished difference Result 38929 states and 58417 transitions.
[2023-04-01 20:53:09,834 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:53:09,835 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 283.5) internal successors, (1701), 4 states have internal predecessors, (1701), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1714
[2023-04-01 20:53:09,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:53:09,885 INFO  L225             Difference]: With dead ends: 38929
[2023-04-01 20:53:09,886 INFO  L226             Difference]: Without dead ends: 22265
[2023-04-01 20:53:09,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2023-04-01 20:53:09,917 INFO  L413           NwaCegarLoop]: 297 mSDtfsCounter, 16273 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 10609 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16273 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 12423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1814 IncrementalHoareTripleChecker+Valid, 10609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-04-01 20:53:09,918 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16273 Valid, 790 Invalid, 12423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 10609 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-04-01 20:53:09,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22265 states.
[2023-04-01 20:53:10,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22156.
[2023-04-01 20:53:10,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22156 states, 21669 states have (on average 1.2811389542664635) internal successors, (27761), 21710 states have internal predecessors, (27761), 98 states have call successors, (98), 98 states have call predecessors, (98), 388 states have return successors, (1671), 347 states have call predecessors, (1671), 97 states have call successors, (1671)
[2023-04-01 20:53:10,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22156 states to 22156 states and 29530 transitions.
[2023-04-01 20:53:10,299 INFO  L78                 Accepts]: Start accepts. Automaton has 22156 states and 29530 transitions. Word has length 1714
[2023-04-01 20:53:10,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:53:10,300 INFO  L495      AbstractCegarLoop]: Abstraction has 22156 states and 29530 transitions.
[2023-04-01 20:53:10,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 283.5) internal successors, (1701), 4 states have internal predecessors, (1701), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:53:10,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 22156 states and 29530 transitions.
[2023-04-01 20:53:10,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1718
[2023-04-01 20:53:10,349 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:53:10,351 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:53:10,351 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 20:53:10,351 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:53:10,352 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:53:10,353 INFO  L85        PathProgramCache]: Analyzing trace with hash 429134361, now seen corresponding path program 1 times
[2023-04-01 20:53:10,353 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:53:10,353 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871638891]
[2023-04-01 20:53:10,353 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:10,353 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:53:10,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:11,708 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:53:11,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:11,721 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:53:11,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:11,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:11,751 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:53:11,751 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871638891]
[2023-04-01 20:53:11,751 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871638891] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:53:11,751 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:53:11,751 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:53:11,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405518551]
[2023-04-01 20:53:11,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:53:11,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:53:11,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:53:11,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:53:11,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:53:11,755 INFO  L87              Difference]: Start difference. First operand 22156 states and 29530 transitions. Second operand  has 7 states, 6 states have (on average 284.0) internal successors, (1704), 4 states have internal predecessors, (1704), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:53:21,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:53:21,054 INFO  L93              Difference]: Finished difference Result 66740 states and 92732 transitions.
[2023-04-01 20:53:21,054 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:53:21,054 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 284.0) internal successors, (1704), 4 states have internal predecessors, (1704), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1717
[2023-04-01 20:53:21,055 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:53:21,161 INFO  L225             Difference]: With dead ends: 66740
[2023-04-01 20:53:21,161 INFO  L226             Difference]: Without dead ends: 44590
[2023-04-01 20:53:21,199 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2023-04-01 20:53:21,200 INFO  L413           NwaCegarLoop]: 311 mSDtfsCounter, 11299 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 12444 mSolverCounterSat, 3374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11299 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 15818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3374 IncrementalHoareTripleChecker+Valid, 12444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time
[2023-04-01 20:53:21,200 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11299 Valid, 1049 Invalid, 15818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3374 Valid, 12444 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time]
[2023-04-01 20:53:21,232 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44590 states.
[2023-04-01 20:53:21,863 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44590 to 42656.
[2023-04-01 20:53:21,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42656 states, 41472 states have (on average 1.2024739583333333) internal successors, (49869), 41600 states have internal predecessors, (49869), 186 states have call successors, (186), 186 states have call predecessors, (186), 997 states have return successors, (5450), 869 states have call predecessors, (5450), 185 states have call successors, (5450)
[2023-04-01 20:53:21,970 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42656 states to 42656 states and 55505 transitions.
[2023-04-01 20:53:21,970 INFO  L78                 Accepts]: Start accepts. Automaton has 42656 states and 55505 transitions. Word has length 1717
[2023-04-01 20:53:21,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:53:21,971 INFO  L495      AbstractCegarLoop]: Abstraction has 42656 states and 55505 transitions.
[2023-04-01 20:53:21,971 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 284.0) internal successors, (1704), 4 states have internal predecessors, (1704), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 20:53:21,971 INFO  L276                IsEmpty]: Start isEmpty. Operand 42656 states and 55505 transitions.
[2023-04-01 20:53:22,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1722
[2023-04-01 20:53:22,049 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:53:22,050 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:53:22,050 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 20:53:22,051 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:53:22,051 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:53:22,051 INFO  L85        PathProgramCache]: Analyzing trace with hash 855498081, now seen corresponding path program 1 times
[2023-04-01 20:53:22,051 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:53:22,051 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162152510]
[2023-04-01 20:53:22,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:22,052 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:53:22,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:25,410 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:53:25,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:25,423 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:53:25,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:25,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:25,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:53:25,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162152510]
[2023-04-01 20:53:25,437 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162152510] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:53:25,438 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75707330]
[2023-04-01 20:53:25,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:25,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:53:25,439 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:53:25,441 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)
[2023-04-01 20:53:25,445 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-01 20:53:25,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:25,905 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-04-01 20:53:25,933 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:53:27,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:27,686 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:53:27,686 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [75707330] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:53:27,686 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:53:27,687 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2023-04-01 20:53:27,687 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23510339]
[2023-04-01 20:53:27,687 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:53:27,688 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:53:27,689 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:53:27,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:53:27,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:53:27,690 INFO  L87              Difference]: Start difference. First operand 42656 states and 55505 transitions. Second operand  has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 20:53:32,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:53:32,356 INFO  L93              Difference]: Finished difference Result 85306 states and 111024 transitions.
[2023-04-01 20:53:32,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:53:32,357 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1721
[2023-04-01 20:53:32,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:53:32,452 INFO  L225             Difference]: With dead ends: 85306
[2023-04-01 20:53:32,452 INFO  L226             Difference]: Without dead ends: 42656
[2023-04-01 20:53:32,503 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1732 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:53:32,504 INFO  L413           NwaCegarLoop]: 3074 mSDtfsCounter, 378 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5736 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 6586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 5736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-04-01 20:53:32,504 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 3444 Invalid, 6586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 5736 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-04-01 20:53:32,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42656 states.
[2023-04-01 20:53:33,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42656 to 42651.
[2023-04-01 20:53:33,190 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42651 states, 41469 states have (on average 1.1490028696134462) internal successors, (47648), 41596 states have internal predecessors, (47648), 186 states have call successors, (186), 186 states have call predecessors, (186), 995 states have return successors, (3854), 868 states have call predecessors, (3854), 185 states have call successors, (3854)
[2023-04-01 20:53:33,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42651 states to 42651 states and 51688 transitions.
[2023-04-01 20:53:33,251 INFO  L78                 Accepts]: Start accepts. Automaton has 42651 states and 51688 transitions. Word has length 1721
[2023-04-01 20:53:33,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:53:33,252 INFO  L495      AbstractCegarLoop]: Abstraction has 42651 states and 51688 transitions.
[2023-04-01 20:53:33,252 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 20:53:33,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 42651 states and 51688 transitions.
[2023-04-01 20:53:33,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1740
[2023-04-01 20:53:33,316 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:53:33,317 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:53:33,327 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-04-01 20:53:33,527 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:53:33,527 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:53:33,528 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:53:33,528 INFO  L85        PathProgramCache]: Analyzing trace with hash 1864853784, now seen corresponding path program 1 times
[2023-04-01 20:53:33,528 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:53:33,528 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220216226]
[2023-04-01 20:53:33,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:33,529 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:53:33,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:35,676 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:53:35,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:35,713 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:53:35,717 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:35,730 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2023-04-01 20:53:35,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:35,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-04-01 20:53:35,755 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:53:35,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220216226]
[2023-04-01 20:53:35,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220216226] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:53:35,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438486046]
[2023-04-01 20:53:35,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:53:35,756 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:53:35,756 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:53:35,771 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)
[2023-04-01 20:53:35,772 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-04-01 20:53:36,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:53:36,301 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2215 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:53:36,346 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:53:36,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:36,420 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:53:36,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 20:53:36,544 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438486046] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:53:36,544 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:53:36,544 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15
[2023-04-01 20:53:36,544 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803961131]
[2023-04-01 20:53:36,544 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:53:36,547 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-04-01 20:53:36,548 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:53:36,549 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-04-01 20:53:36,549 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210
[2023-04-01 20:53:36,549 INFO  L87              Difference]: Start difference. First operand 42651 states and 51688 transitions. Second operand  has 15 states, 15 states have (on average 117.66666666666667) internal successors, (1765), 13 states have internal predecessors, (1765), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8)
[2023-04-01 20:54:12,422 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:54:12,423 INFO  L93              Difference]: Finished difference Result 181029 states and 234452 transitions.
[2023-04-01 20:54:12,424 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. 
[2023-04-01 20:54:12,424 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 117.66666666666667) internal successors, (1765), 13 states have internal predecessors, (1765), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 1739
[2023-04-01 20:54:12,424 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:54:12,930 INFO  L225             Difference]: With dead ends: 181029
[2023-04-01 20:54:12,930 INFO  L226             Difference]: Without dead ends: 138384
[2023-04-01 20:54:13,024 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3612 GetRequests, 3515 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1614, Invalid=7892, Unknown=0, NotChecked=0, Total=9506
[2023-04-01 20:54:13,026 INFO  L413           NwaCegarLoop]: 450 mSDtfsCounter, 36633 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 41920 mSolverCounterSat, 15181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36633 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 57101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15181 IncrementalHoareTripleChecker+Valid, 41920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time
[2023-04-01 20:54:13,026 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36633 Valid, 2855 Invalid, 57101 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15181 Valid, 41920 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time]
[2023-04-01 20:54:13,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138384 states.
[2023-04-01 20:54:14,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138384 to 124857.
[2023-04-01 20:54:15,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124857 states, 120784 states have (on average 1.0598175255000661) internal successors, (128009), 121376 states have internal predecessors, (128009), 538 states have call successors, (538), 538 states have call predecessors, (538), 3534 states have return successors, (13371), 2942 states have call predecessors, (13371), 537 states have call successors, (13371)
[2023-04-01 20:54:15,796 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124857 states to 124857 states and 141918 transitions.
[2023-04-01 20:54:15,797 INFO  L78                 Accepts]: Start accepts. Automaton has 124857 states and 141918 transitions. Word has length 1739
[2023-04-01 20:54:15,797 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:54:15,797 INFO  L495      AbstractCegarLoop]: Abstraction has 124857 states and 141918 transitions.
[2023-04-01 20:54:15,798 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 117.66666666666667) internal successors, (1765), 13 states have internal predecessors, (1765), 6 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8)
[2023-04-01 20:54:15,798 INFO  L276                IsEmpty]: Start isEmpty. Operand 124857 states and 141918 transitions.
[2023-04-01 20:54:16,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1860
[2023-04-01 20:54:16,031 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:54:16,032 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:54:16,042 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-04-01 20:54:16,242 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-04-01 20:54:16,243 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:54:16,243 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:54:16,244 INFO  L85        PathProgramCache]: Analyzing trace with hash -1298315316, now seen corresponding path program 1 times
[2023-04-01 20:54:16,244 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:54:16,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154840653]
[2023-04-01 20:54:16,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:16,244 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:54:16,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,201 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:54:18,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,217 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:54:18,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,248 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-04-01 20:54:18,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,267 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2023-04-01 20:54:18,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 277 backedges. 151 proven. 70 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked.
[2023-04-01 20:54:18,282 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:54:18,282 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154840653]
[2023-04-01 20:54:18,282 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154840653] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:54:18,283 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400753986]
[2023-04-01 20:54:18,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:18,283 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:54:18,283 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:54:18,284 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)
[2023-04-01 20:54:18,286 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-04-01 20:54:18,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:18,874 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-04-01 20:54:18,891 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:54:18,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 277 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2023-04-01 20:54:18,974 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:54:18,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [400753986] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:54:18,975 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:54:18,975 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10
[2023-04-01 20:54:18,975 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806681755]
[2023-04-01 20:54:18,975 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:54:18,977 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:54:18,977 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:54:18,979 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:54:18,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-04-01 20:54:18,979 INFO  L87              Difference]: Start difference. First operand 124857 states and 141918 transitions. Second operand  has 5 states, 5 states have (on average 345.8) internal successors, (1729), 4 states have internal predecessors, (1729), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 20:54:27,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:54:27,251 INFO  L93              Difference]: Finished difference Result 291666 states and 335721 transitions.
[2023-04-01 20:54:27,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:54:27,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 345.8) internal successors, (1729), 4 states have internal predecessors, (1729), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1859
[2023-04-01 20:54:27,252 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:54:27,638 INFO  L225             Difference]: With dead ends: 291666
[2023-04-01 20:54:27,639 INFO  L226             Difference]: Without dead ends: 166815
[2023-04-01 20:54:27,710 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1873 GetRequests, 1862 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2023-04-01 20:54:27,711 INFO  L413           NwaCegarLoop]: 591 mSDtfsCounter, 6580 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 9666 mSolverCounterSat, 3672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 13338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3672 IncrementalHoareTripleChecker+Valid, 9666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-04-01 20:54:27,711 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6580 Valid, 1442 Invalid, 13338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3672 Valid, 9666 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-04-01 20:54:27,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166815 states.
[2023-04-01 20:54:30,029 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166815 to 162500.
[2023-04-01 20:54:30,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162500 states, 157611 states have (on average 1.0576165369168395) internal successors, (166692), 158332 states have internal predecessors, (166692), 706 states have call successors, (706), 706 states have call predecessors, (706), 4182 states have return successors, (18883), 3461 states have call predecessors, (18883), 705 states have call successors, (18883)
[2023-04-01 20:54:30,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162500 states to 162500 states and 186281 transitions.
[2023-04-01 20:54:30,532 INFO  L78                 Accepts]: Start accepts. Automaton has 162500 states and 186281 transitions. Word has length 1859
[2023-04-01 20:54:30,532 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:54:30,532 INFO  L495      AbstractCegarLoop]: Abstraction has 162500 states and 186281 transitions.
[2023-04-01 20:54:30,533 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 345.8) internal successors, (1729), 4 states have internal predecessors, (1729), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 20:54:30,533 INFO  L276                IsEmpty]: Start isEmpty. Operand 162500 states and 186281 transitions.
[2023-04-01 20:54:30,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1973
[2023-04-01 20:54:30,885 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:54:30,886 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:54:30,893 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-04-01 20:54:31,086 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:54:31,087 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:54:31,087 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:54:31,088 INFO  L85        PathProgramCache]: Analyzing trace with hash -702839253, now seen corresponding path program 1 times
[2023-04-01 20:54:31,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:54:31,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396277277]
[2023-04-01 20:54:31,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:31,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:54:31,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,342 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:54:33,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,357 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:54:33,366 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,382 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:54:33,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,392 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:54:33,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,424 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:54:33,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:33,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 547 backedges. 391 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2023-04-01 20:54:33,459 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:54:33,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396277277]
[2023-04-01 20:54:33,459 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396277277] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:54:33,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64411820]
[2023-04-01 20:54:33,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:33,460 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:54:33,460 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:54:33,474 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)
[2023-04-01 20:54:33,477 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-04-01 20:54:34,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:34,018 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:54:34,041 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:54:34,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 547 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2023-04-01 20:54:34,118 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:54:34,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 547 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2023-04-01 20:54:34,308 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [64411820] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:54:34,308 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:54:34,309 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12
[2023-04-01 20:54:34,309 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902293980]
[2023-04-01 20:54:34,309 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:54:34,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-04-01 20:54:34,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:54:34,313 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-04-01 20:54:34,314 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2023-04-01 20:54:34,314 INFO  L87              Difference]: Start difference. First operand 162500 states and 186281 transitions. Second operand  has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 10 states have internal predecessors, (1940), 5 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 20:54:48,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:54:48,439 INFO  L93              Difference]: Finished difference Result 366981 states and 423247 transitions.
[2023-04-01 20:54:48,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-01 20:54:48,440 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 10 states have internal predecessors, (1940), 5 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1972
[2023-04-01 20:54:48,440 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:54:49,236 INFO  L225             Difference]: With dead ends: 366981
[2023-04-01 20:54:49,237 INFO  L226             Difference]: Without dead ends: 204487
[2023-04-01 20:54:49,359 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3980 GetRequests, 3959 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462
[2023-04-01 20:54:49,360 INFO  L413           NwaCegarLoop]: 338 mSDtfsCounter, 16128 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 17895 mSolverCounterSat, 4524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16128 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 22419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4524 IncrementalHoareTripleChecker+Valid, 17895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time
[2023-04-01 20:54:49,360 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16128 Valid, 1517 Invalid, 22419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4524 Valid, 17895 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time]
[2023-04-01 20:54:49,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204487 states.
[2023-04-01 20:54:52,199 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204487 to 200040.
[2023-04-01 20:54:52,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 200040 states, 194374 states have (on average 1.0379165937831192) internal successors, (201744), 195201 states have internal predecessors, (201744), 874 states have call successors, (874), 874 states have call predecessors, (874), 4791 states have return successors, (17973), 3964 states have call predecessors, (17973), 873 states have call successors, (17973)
[2023-04-01 20:54:53,067 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200040 states to 200040 states and 220591 transitions.
[2023-04-01 20:54:53,068 INFO  L78                 Accepts]: Start accepts. Automaton has 200040 states and 220591 transitions. Word has length 1972
[2023-04-01 20:54:53,069 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:54:53,069 INFO  L495      AbstractCegarLoop]: Abstraction has 200040 states and 220591 transitions.
[2023-04-01 20:54:53,069 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 161.66666666666666) internal successors, (1940), 10 states have internal predecessors, (1940), 5 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 20:54:53,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 200040 states and 220591 transitions.
[2023-04-01 20:54:53,463 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2171
[2023-04-01 20:54:53,464 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:54:53,466 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:54:53,474 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-04-01 20:54:53,666 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:54:53,667 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:54:53,668 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:54:53,668 INFO  L85        PathProgramCache]: Analyzing trace with hash -1541389673, now seen corresponding path program 1 times
[2023-04-01 20:54:53,668 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:54:53,668 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024476030]
[2023-04-01 20:54:53,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:53,669 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:54:53,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,241 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:54:56,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,268 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:54:56,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,297 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:54:56,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,308 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:54:56,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,347 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:54:56,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,446 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406
[2023-04-01 20:54:56,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,455 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433
[2023-04-01 20:54:56,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:56,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 1145 backedges. 496 proven. 17 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked.
[2023-04-01 20:54:56,474 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:54:56,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024476030]
[2023-04-01 20:54:56,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024476030] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:54:56,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412163779]
[2023-04-01 20:54:56,474 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:56,474 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:54:56,474 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:54:56,475 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)
[2023-04-01 20:54:56,477 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-04-01 20:54:57,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:57,056 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-04-01 20:54:57,072 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:54:57,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 1145 backedges. 673 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2023-04-01 20:54:57,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:54:57,095 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412163779] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:54:57,095 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:54:57,096 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9
[2023-04-01 20:54:57,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803742798]
[2023-04-01 20:54:57,096 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:54:57,097 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:54:57,098 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:54:57,099 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:54:57,099 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-04-01 20:54:57,100 INFO  L87              Difference]: Start difference. First operand 200040 states and 220591 transitions. Second operand  has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-04-01 20:55:03,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:03,009 INFO  L93              Difference]: Finished difference Result 400015 states and 441411 transitions.
[2023-04-01 20:55:03,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:55:03,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 2170
[2023-04-01 20:55:03,010 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:03,668 INFO  L225             Difference]: With dead ends: 400015
[2023-04-01 20:55:03,669 INFO  L226             Difference]: Without dead ends: 199981
[2023-04-01 20:55:03,837 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2191 GetRequests, 2184 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-04-01 20:55:03,838 INFO  L413           NwaCegarLoop]: 3005 mSDtfsCounter, 2110 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 6117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:03,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 3312 Invalid, 6117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-04-01 20:55:03,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 199981 states.
[2023-04-01 20:55:06,318 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 199981 to 199979.
[2023-04-01 20:55:06,427 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199979 states, 194333 states have (on average 1.0321509985437367) internal successors, (200581), 195155 states have internal predecessors, (200581), 874 states have call successors, (874), 874 states have call predecessors, (874), 4771 states have return successors, (16308), 3949 states have call predecessors, (16308), 873 states have call successors, (16308)
[2023-04-01 20:55:06,884 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199979 states to 199979 states and 217763 transitions.
[2023-04-01 20:55:06,885 INFO  L78                 Accepts]: Start accepts. Automaton has 199979 states and 217763 transitions. Word has length 2170
[2023-04-01 20:55:06,886 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:06,886 INFO  L495      AbstractCegarLoop]: Abstraction has 199979 states and 217763 transitions.
[2023-04-01 20:55:06,886 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-04-01 20:55:06,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 199979 states and 217763 transitions.
[2023-04-01 20:55:07,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2481
[2023-04-01 20:55:07,325 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:07,326 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:55:07,334 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-04-01 20:55:07,526 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:07,527 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:07,527 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:07,527 INFO  L85        PathProgramCache]: Analyzing trace with hash -1773634264, now seen corresponding path program 1 times
[2023-04-01 20:55:07,527 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:07,528 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051207325]
[2023-04-01 20:55:07,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:07,528 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:07,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:09,994 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:09,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,006 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:10,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,031 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:55:10,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,040 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:55:10,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,065 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:55:10,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,102 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406
[2023-04-01 20:55:10,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,164 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548
[2023-04-01 20:55:10,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,344 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2023-04-01 20:55:10,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:10,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 2044 backedges. 1306 proven. 16 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2023-04-01 20:55:10,368 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:10,368 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051207325]
[2023-04-01 20:55:10,368 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051207325] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:55:10,368 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527637784]
[2023-04-01 20:55:10,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:10,369 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:10,369 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:55:10,370 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)
[2023-04-01 20:55:10,372 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-04-01 20:55:11,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:11,019 INFO  L262         TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-04-01 20:55:11,050 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:55:11,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 2044 backedges. 1304 proven. 2 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-04-01 20:55:11,323 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:55:12,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 2044 backedges. 1304 proven. 2 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-04-01 20:55:12,031 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [527637784] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:55:12,031 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:55:12,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12
[2023-04-01 20:55:12,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723468253]
[2023-04-01 20:55:12,034 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:55:12,037 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-04-01 20:55:12,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:12,039 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-04-01 20:55:12,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2023-04-01 20:55:12,040 INFO  L87              Difference]: Start difference. First operand 199979 states and 217763 transitions. Second operand  has 12 states, 12 states have (on average 214.41666666666666) internal successors, (2573), 10 states have internal predecessors, (2573), 8 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2023-04-01 20:55:30,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:30,799 INFO  L93              Difference]: Finished difference Result 404520 states and 440977 transitions.
[2023-04-01 20:55:30,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2023-04-01 20:55:30,799 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 214.41666666666666) internal successors, (2573), 10 states have internal predecessors, (2573), 8 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 2480
[2023-04-01 20:55:30,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:31,330 INFO  L225             Difference]: With dead ends: 404520
[2023-04-01 20:55:31,330 INFO  L226             Difference]: Without dead ends: 204547
[2023-04-01 20:55:31,559 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5012 GetRequests, 4985 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650
[2023-04-01 20:55:31,559 INFO  L413           NwaCegarLoop]: 393 mSDtfsCounter, 17391 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 27316 mSolverCounterSat, 8432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17391 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 35748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8432 IncrementalHoareTripleChecker+Valid, 27316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:31,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17391 Valid, 2209 Invalid, 35748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8432 Valid, 27316 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time]
[2023-04-01 20:55:31,692 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204547 states.
[2023-04-01 20:55:34,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204547 to 204075.
[2023-04-01 20:55:34,232 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 204075 states, 198167 states have (on average 1.0282539474281793) internal successors, (203766), 199045 states have internal predecessors, (203766), 890 states have call successors, (890), 890 states have call predecessors, (890), 5017 states have return successors, (15083), 4139 states have call predecessors, (15083), 889 states have call successors, (15083)
[2023-04-01 20:55:34,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 204075 states to 204075 states and 219739 transitions.
[2023-04-01 20:55:34,654 INFO  L78                 Accepts]: Start accepts. Automaton has 204075 states and 219739 transitions. Word has length 2480
[2023-04-01 20:55:34,655 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:34,655 INFO  L495      AbstractCegarLoop]: Abstraction has 204075 states and 219739 transitions.
[2023-04-01 20:55:34,655 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 214.41666666666666) internal successors, (2573), 10 states have internal predecessors, (2573), 8 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2023-04-01 20:55:34,656 INFO  L276                IsEmpty]: Start isEmpty. Operand 204075 states and 219739 transitions.
[2023-04-01 20:55:35,068 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2526
[2023-04-01 20:55:35,068 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:35,085 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:55:35,104 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-04-01 20:55:35,292 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:35,292 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:35,293 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:35,293 INFO  L85        PathProgramCache]: Analyzing trace with hash -571552882, now seen corresponding path program 1 times
[2023-04-01 20:55:35,294 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:35,294 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936387919]
[2023-04-01 20:55:35,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:35,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:35,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,525 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:44,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,555 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:44,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,603 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:55:44,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,646 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:55:44,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,769 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271
[2023-04-01 20:55:44,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,859 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397
[2023-04-01 20:55:44,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,912 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618
[2023-04-01 20:55:44,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,938 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727
[2023-04-01 20:55:44,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:44,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 2676 backedges. 1131 proven. 762 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked.
[2023-04-01 20:55:44,967 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:44,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936387919]
[2023-04-01 20:55:44,967 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936387919] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:55:44,967 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046178568]
[2023-04-01 20:55:44,968 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:44,968 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:44,968 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:55:44,969 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)
[2023-04-01 20:55:44,971 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-04-01 20:55:45,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:45,630 INFO  L262         TraceCheckSpWp]: Trace formula consists of 3274 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-04-01 20:55:45,646 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:55:45,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 2676 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked.
[2023-04-01 20:55:45,678 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:55:45,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046178568] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:45,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:55:45,679 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15
[2023-04-01 20:55:45,679 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970344094]
[2023-04-01 20:55:45,679 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:45,682 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:55:45,682 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:45,683 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:55:45,684 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2023-04-01 20:55:45,684 INFO  L87              Difference]: Start difference. First operand 204075 states and 219739 transitions. Second operand  has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)