/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_label18.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 20:54:24,706 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-04-01 20:54:24,777 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2023-04-01 20:54:24,779 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 20:54:24,780 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 20:54:24,783 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 20:54:24,784 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 20:54:24,804 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 20:54:24,804 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 20:54:24,805 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 20:54:24,805 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 20:54:24,806 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 20:54:24,806 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 20:54:24,807 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-04-01 20:54:24,807 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-04-01 20:54:24,807 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-04-01 20:54:24,807 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 20:54:24,808 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 20:54:24,808 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 20:54:24,808 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 20:54:24,808 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 20:54:24,808 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 20:54:24,809 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 20:54:24,809 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 20:54:24,810 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-04-01 20:54:24,810 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 20:54:24,810 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:54:24,810 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 20:54:24,810 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 20:54:24,811 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 20:54:24,811 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-04-01 20:54:24,811 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 20:54:24,811 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-04-01 20:54:24,811 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 20:54:24,812 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-04-01 20:54:24,812 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-04-01 20:54:24,812 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-04-01 20:54:24,812 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-04-01 20:54:25,011 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 20:54:25,027 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 20:54:25,031 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 20:54:25,038 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 20:54:25,038 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 20:54:25,039 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label18.c
[2023-04-01 20:54:26,157 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 20:54:26,718 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 20:54:26,719 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label18.c
[2023-04-01 20:54:26,762 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca2b915b/943121fb9f90496d9196cc5c0393a462/FLAGaf98be5a2
[2023-04-01 20:54:26,777 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca2b915b/943121fb9f90496d9196cc5c0393a462
[2023-04-01 20:54:26,779 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 20:54:26,781 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 20:54:26,782 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 20:54:26,782 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 20:54:26,785 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 20:54:26,785 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:54:26" (1/1) ...
[2023-04-01 20:54:26,786 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb44bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:26, skipping insertion in model container
[2023-04-01 20:54:26,786 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:54:26" (1/1) ...
[2023-04-01 20:54:26,793 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 20:54:26,986 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 20:54:28,451 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_label18.c[375502,375515]
[2023-04-01 20:54:28,472 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:54:28,485 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 20:54:29,260 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_label18.c[375502,375515]
[2023-04-01 20:54:29,269 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:54:29,309 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 20:54:29,309 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29 WrapperNode
[2023-04-01 20:54:29,309 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 20:54:29,310 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 20:54:29,310 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 20:54:29,311 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 20:54:29,320 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,320 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,407 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,407 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,613 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,649 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,725 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,751 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,833 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 20:54:29,834 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 20:54:29,834 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 20:54:29,834 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 20:54:29,835 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (1/1) ...
[2023-04-01 20:54:29,910 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:54:29,923 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:54:29,938 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 20:54:29,951 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 20:54:29,979 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 20:54:29,979 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-04-01 20:54:29,980 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-04-01 20:54:29,981 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 20:54:29,981 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 20:54:29,982 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 20:54:30,065 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 20:54:30,067 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 20:54:36,502 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 20:54:36,523 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 20:54:36,524 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 20:54:36,529 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:54:36 BoogieIcfgContainer
[2023-04-01 20:54:36,530 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 20:54:36,533 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 20:54:36,534 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 20:54:36,536 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 20:54:36,536 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:54:26" (1/3) ...
[2023-04-01 20:54:36,537 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423057f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:54:36, skipping insertion in model container
[2023-04-01 20:54:36,537 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:29" (2/3) ...
[2023-04-01 20:54:36,537 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423057f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:54:36, skipping insertion in model container
[2023-04-01 20:54:36,537 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:54:36" (3/3) ...
[2023-04-01 20:54:36,538 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label18.c
[2023-04-01 20:54:36,553 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 20:54:36,554 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 20:54:36,656 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 20:54:36,661 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;@1cd4a72c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-04-01 20:54:36,661 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 20:54:36,674 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 20:54:36,786 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1663
[2023-04-01 20:54:36,786 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:54:36,788 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]
[2023-04-01 20:54:36,789 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:54:36,796 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:54:36,797 INFO  L85        PathProgramCache]: Analyzing trace with hash -2064385663, now seen corresponding path program 1 times
[2023-04-01 20:54:36,805 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:54:36,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286260661]
[2023-04-01 20:54:36,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:36,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:54:37,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:46,147 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:54:46,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:46,188 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 20:54:46,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:54:46,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286260661]
[2023-04-01 20:54:46,206 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286260661] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:54:46,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:54:46,206 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-04-01 20:54:46,208 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902268896]
[2023-04-01 20:54:46,208 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:54:46,215 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:54:46,215 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:54:46,258 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:54:46,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-04-01 20:54:46,266 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 412.75) internal successors, (1651), 3 states have internal predecessors, (1651), 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 20:55:00,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:00,441 INFO  L93              Difference]: Finished difference Result 8124 states and 15411 transitions.
[2023-04-01 20:55:00,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:55:00,443 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 412.75) internal successors, (1651), 3 states have internal predecessors, (1651), 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 1662
[2023-04-01 20:55:00,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:00,496 INFO  L225             Difference]: With dead ends: 8124
[2023-04-01 20:55:00,496 INFO  L226             Difference]: Without dead ends: 5834
[2023-04-01 20:55:00,506 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 20:55:00,509 INFO  L413           NwaCegarLoop]: 333 mSDtfsCounter, 6368 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 12692 mSolverCounterSat, 2990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6368 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, 13.7s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:00,510 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6368 Valid, 633 Invalid, 15682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2990 Valid, 12692 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time]
[2023-04-01 20:55:00,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5834 states.
[2023-04-01 20:55:00,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801.
[2023-04-01 20:55:00,718 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 20:55:00,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions.
[2023-04-01 20:55:00,743 INFO  L78                 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1662
[2023-04-01 20:55:00,748 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:00,748 INFO  L495      AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions.
[2023-04-01 20:55:00,749 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 412.75) internal successors, (1651), 3 states have internal predecessors, (1651), 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 20:55:00,749 INFO  L276                IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions.
[2023-04-01 20:55:00,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1672
[2023-04-01 20:55:00,846 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:00,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:00,848 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 20:55:00,849 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:00,849 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:00,850 INFO  L85        PathProgramCache]: Analyzing trace with hash 1878397688, now seen corresponding path program 1 times
[2023-04-01 20:55:00,850 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:00,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085750511]
[2023-04-01 20:55:00,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:00,851 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:01,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:03,865 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:03,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:03,891 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:03,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:03,930 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 20:55:03,930 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:03,931 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085750511]
[2023-04-01 20:55:03,931 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085750511] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:03,931 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:03,931 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-01 20:55:03,931 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496404691]
[2023-04-01 20:55:03,931 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:03,934 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-04-01 20:55:03,934 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:03,936 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-04-01 20:55:03,936 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-04-01 20:55:03,937 INFO  L87              Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand  has 8 states, 7 states have (on average 236.85714285714286) internal successors, (1658), 5 states have internal predecessors, (1658), 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 20:55:18,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:18,310 INFO  L93              Difference]: Finished difference Result 22514 states and 37516 transitions.
[2023-04-01 20:55:18,310 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-01 20:55:18,311 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 236.85714285714286) internal successors, (1658), 5 states have internal predecessors, (1658), 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 1671
[2023-04-01 20:55:18,312 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:18,393 INFO  L225             Difference]: With dead ends: 22514
[2023-04-01 20:55:18,394 INFO  L226             Difference]: Without dead ends: 16719
[2023-04-01 20:55:18,408 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2023-04-01 20:55:18,409 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 16686 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 15208 mSolverCounterSat, 5258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s 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, 13.7s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:18,409 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16686 Valid, 1283 Invalid, 20466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5258 Valid, 15208 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time]
[2023-04-01 20:55:18,424 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16719 states.
[2023-04-01 20:55:18,735 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 16670.
[2023-04-01 20:55:18,773 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 20:55:18,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 24925 transitions.
[2023-04-01 20:55:18,808 INFO  L78                 Accepts]: Start accepts. Automaton has 16670 states and 24925 transitions. Word has length 1671
[2023-04-01 20:55:18,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:18,809 INFO  L495      AbstractCegarLoop]: Abstraction has 16670 states and 24925 transitions.
[2023-04-01 20:55:18,810 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 236.85714285714286) internal successors, (1658), 5 states have internal predecessors, (1658), 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 20:55:18,810 INFO  L276                IsEmpty]: Start isEmpty. Operand 16670 states and 24925 transitions.
[2023-04-01 20:55:18,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1678
[2023-04-01 20:55:18,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:18,869 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]
[2023-04-01 20:55:18,869 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 20:55:18,870 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:18,870 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:18,870 INFO  L85        PathProgramCache]: Analyzing trace with hash -2057326642, now seen corresponding path program 1 times
[2023-04-01 20:55:18,870 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:18,871 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242771540]
[2023-04-01 20:55:18,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:18,871 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:19,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:20,898 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:20,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:20,915 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:20,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:20,940 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 20:55:20,940 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:20,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242771540]
[2023-04-01 20:55:20,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242771540] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:20,942 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:20,942 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:55:20,942 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006898946]
[2023-04-01 20:55:20,942 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:20,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:55:20,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:20,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:55:20,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:55:20,948 INFO  L87              Difference]: Start difference. First operand 16670 states and 24925 transitions. Second operand  has 7 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 4 states have internal predecessors, (1664), 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 20:55:29,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:29,824 INFO  L93              Difference]: Finished difference Result 38929 states and 58417 transitions.
[2023-04-01 20:55:29,825 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:55:29,825 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 4 states have internal predecessors, (1664), 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 1677
[2023-04-01 20:55:29,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:29,891 INFO  L225             Difference]: With dead ends: 38929
[2023-04-01 20:55:29,891 INFO  L226             Difference]: Without dead ends: 22265
[2023-04-01 20:55:29,932 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 20:55:29,934 INFO  L413           NwaCegarLoop]: 297 mSDtfsCounter, 16273 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 10609 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 8.3s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:29,935 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16273 Valid, 790 Invalid, 12423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 10609 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-04-01 20:55:29,956 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22265 states.
[2023-04-01 20:55:30,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22156.
[2023-04-01 20:55:30,356 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 20:55:30,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22156 states to 22156 states and 29530 transitions.
[2023-04-01 20:55:30,397 INFO  L78                 Accepts]: Start accepts. Automaton has 22156 states and 29530 transitions. Word has length 1677
[2023-04-01 20:55:30,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:30,397 INFO  L495      AbstractCegarLoop]: Abstraction has 22156 states and 29530 transitions.
[2023-04-01 20:55:30,401 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 4 states have internal predecessors, (1664), 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 20:55:30,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 22156 states and 29530 transitions.
[2023-04-01 20:55:30,467 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1681
[2023-04-01 20:55:30,467 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:30,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:30,469 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 20:55:30,469 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:30,471 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:30,471 INFO  L85        PathProgramCache]: Analyzing trace with hash -781880918, now seen corresponding path program 1 times
[2023-04-01 20:55:30,471 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:30,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511795871]
[2023-04-01 20:55:30,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:30,472 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:30,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:32,266 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:32,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:32,283 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:32,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:32,311 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 20:55:32,312 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:32,312 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511795871]
[2023-04-01 20:55:32,312 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511795871] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:32,312 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:32,312 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:55:32,313 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10973698]
[2023-04-01 20:55:32,313 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:32,315 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:55:32,315 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:32,316 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:55:32,316 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:55:32,317 INFO  L87              Difference]: Start difference. First operand 22156 states and 29530 transitions. Second operand  has 7 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 4 states have internal predecessors, (1667), 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 20:55:42,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:42,339 INFO  L93              Difference]: Finished difference Result 66740 states and 92732 transitions.
[2023-04-01 20:55:42,339 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:55:42,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 4 states have internal predecessors, (1667), 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 1680
[2023-04-01 20:55:42,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:42,466 INFO  L225             Difference]: With dead ends: 66740
[2023-04-01 20:55:42,466 INFO  L226             Difference]: Without dead ends: 44590
[2023-04-01 20:55:42,517 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 20:55:42,518 INFO  L413           NwaCegarLoop]: 311 mSDtfsCounter, 11299 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 12444 mSolverCounterSat, 3374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s 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, 9.3s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:42,518 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11299 Valid, 1049 Invalid, 15818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3374 Valid, 12444 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2023-04-01 20:55:42,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44590 states.
[2023-04-01 20:55:43,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44590 to 42656.
[2023-04-01 20:55:43,431 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 20:55:43,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42656 states to 42656 states and 55505 transitions.
[2023-04-01 20:55:43,720 INFO  L78                 Accepts]: Start accepts. Automaton has 42656 states and 55505 transitions. Word has length 1680
[2023-04-01 20:55:43,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:43,721 INFO  L495      AbstractCegarLoop]: Abstraction has 42656 states and 55505 transitions.
[2023-04-01 20:55:43,721 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 4 states have internal predecessors, (1667), 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 20:55:43,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 42656 states and 55505 transitions.
[2023-04-01 20:55:43,807 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1685
[2023-04-01 20:55:43,808 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:43,809 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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[2023-04-01 20:55:43,809 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 20:55:43,809 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:43,810 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:43,811 INFO  L85        PathProgramCache]: Analyzing trace with hash -1525114526, now seen corresponding path program 1 times
[2023-04-01 20:55:43,811 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:43,811 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126360152]
[2023-04-01 20:55:43,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:43,812 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:44,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:48,143 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:48,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:48,171 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:48,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:48,187 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 20:55:48,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:48,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126360152]
[2023-04-01 20:55:48,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126360152] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:55:48,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225882618]
[2023-04-01 20:55:48,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:48,190 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:48,190 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:55:48,193 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 20:55:48,196 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 20:55:48,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:48,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-04-01 20:55:48,788 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:55:50,822 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 20:55:50,823 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:55:50,823 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [225882618] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:50,823 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:55:50,823 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2023-04-01 20:55:50,824 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079264331]
[2023-04-01 20:55:50,824 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:50,826 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:55:50,826 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:50,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:55:50,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:55:50,828 INFO  L87              Difference]: Start difference. First operand 42656 states and 55505 transitions. Second operand  has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 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 20:55:56,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:56,059 INFO  L93              Difference]: Finished difference Result 85306 states and 111024 transitions.
[2023-04-01 20:55:56,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:55:56,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 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 1684
[2023-04-01 20:55:56,063 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:56,182 INFO  L225             Difference]: With dead ends: 85306
[2023-04-01 20:55:56,182 INFO  L226             Difference]: Without dead ends: 42656
[2023-04-01 20:55:56,245 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1699 GetRequests, 1695 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 20:55:56,246 INFO  L413           NwaCegarLoop]: 3074 mSDtfsCounter, 415 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5736 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 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, 4.7s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:56,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 3444 Invalid, 6586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 5736 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2023-04-01 20:55:56,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42656 states.
[2023-04-01 20:55:56,943 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42656 to 42651.
[2023-04-01 20:55:56,984 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 20:55:57,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42651 states to 42651 states and 51688 transitions.
[2023-04-01 20:55:57,062 INFO  L78                 Accepts]: Start accepts. Automaton has 42651 states and 51688 transitions. Word has length 1684
[2023-04-01 20:55:57,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:57,064 INFO  L495      AbstractCegarLoop]: Abstraction has 42651 states and 51688 transitions.
[2023-04-01 20:55:57,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 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 20:55:57,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 42651 states and 51688 transitions.
[2023-04-01 20:55:57,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1703
[2023-04-01 20:55:57,326 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:57,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:57,341 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 20:55:57,527 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 20:55:57,528 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:57,529 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:57,530 INFO  L85        PathProgramCache]: Analyzing trace with hash 1174420299, now seen corresponding path program 1 times
[2023-04-01 20:55:57,530 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:57,530 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458522969]
[2023-04-01 20:55:57,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:57,660 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:57,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:00,478 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:56:00,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:00,501 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:56:00,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:00,525 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2023-04-01 20:56:00,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:00,555 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 20:56:00,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:56:00,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458522969]
[2023-04-01 20:56:00,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458522969] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:56:00,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17395252]
[2023-04-01 20:56:00,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:00,556 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:56:00,557 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:56:00,558 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 20:56:00,585 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 20:56:01,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:01,069 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:56:01,103 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:56:01,179 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 20:56:01,179 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:56:01,332 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 20:56:01,332 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [17395252] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:56:01,332 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:56:01,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15
[2023-04-01 20:56:01,333 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879931991]
[2023-04-01 20:56:01,333 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:56:01,336 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-04-01 20:56:01,337 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:56:01,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-04-01 20:56:01,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210
[2023-04-01 20:56:01,339 INFO  L87              Difference]: Start difference. First operand 42651 states and 51688 transitions. Second operand  has 15 states, 15 states have (on average 115.2) internal successors, (1728), 13 states have internal predecessors, (1728), 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 20:56:41,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:56:41,159 INFO  L93              Difference]: Finished difference Result 181029 states and 234452 transitions.
[2023-04-01 20:56:41,160 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. 
[2023-04-01 20:56:41,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 115.2) internal successors, (1728), 13 states have internal predecessors, (1728), 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 1702
[2023-04-01 20:56:41,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:56:41,818 INFO  L225             Difference]: With dead ends: 181029
[2023-04-01 20:56:41,818 INFO  L226             Difference]: Without dead ends: 138384
[2023-04-01 20:56:41,976 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3538 GetRequests, 3441 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1614, Invalid=7892, Unknown=0, NotChecked=0, Total=9506
[2023-04-01 20:56:41,980 INFO  L413           NwaCegarLoop]: 450 mSDtfsCounter, 38148 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 43646 mSolverCounterSat, 16899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38148 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 60545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16899 IncrementalHoareTripleChecker+Valid, 43646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time
[2023-04-01 20:56:41,980 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38148 Valid, 3259 Invalid, 60545 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16899 Valid, 43646 Invalid, 0 Unknown, 0 Unchecked, 36.0s Time]
[2023-04-01 20:56:42,070 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138384 states.
[2023-04-01 20:56:44,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138384 to 124748.
[2023-04-01 20:56:44,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124748 states, 120712 states have (on average 1.059828351779442) internal successors, (127934), 121298 states have internal predecessors, (127934), 538 states have call successors, (538), 538 states have call predecessors, (538), 3497 states have return successors, (13283), 2911 states have call predecessors, (13283), 537 states have call successors, (13283)
[2023-04-01 20:56:45,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124748 states to 124748 states and 141755 transitions.
[2023-04-01 20:56:45,311 INFO  L78                 Accepts]: Start accepts. Automaton has 124748 states and 141755 transitions. Word has length 1702
[2023-04-01 20:56:45,311 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:56:45,311 INFO  L495      AbstractCegarLoop]: Abstraction has 124748 states and 141755 transitions.
[2023-04-01 20:56:45,312 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 115.2) internal successors, (1728), 13 states have internal predecessors, (1728), 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 20:56:45,312 INFO  L276                IsEmpty]: Start isEmpty. Operand 124748 states and 141755 transitions.
[2023-04-01 20:56:45,796 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1995
[2023-04-01 20:56:45,797 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:56:45,798 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:45,809 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 20:56:46,005 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 20:56:46,006 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:56:46,006 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:56:46,007 INFO  L85        PathProgramCache]: Analyzing trace with hash -2122337629, now seen corresponding path program 1 times
[2023-04-01 20:56:46,007 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:56:46,007 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829499020]
[2023-04-01 20:56:46,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:46,008 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:56:46,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:48,570 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:56:48,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:48,605 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:56:48,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:48,651 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-04-01 20:56:48,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:48,707 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2023-04-01 20:56:48,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:48,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 545 backedges. 323 proven. 70 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked.
[2023-04-01 20:56:48,764 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:56:48,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829499020]
[2023-04-01 20:56:48,764 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829499020] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:56:48,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103294761]
[2023-04-01 20:56:48,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:48,765 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:56:48,765 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:56:48,766 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 20:56:48,769 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 20:56:49,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:49,392 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-04-01 20:56:49,409 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:56:49,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 545 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked.
[2023-04-01 20:56:49,500 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:56:49,500 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103294761] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:56:49,501 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:56:49,501 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10
[2023-04-01 20:56:49,501 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923527114]
[2023-04-01 20:56:49,501 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:56:49,503 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:56:49,503 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:56:49,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:56:49,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-04-01 20:56:49,505 INFO  L87              Difference]: Start difference. First operand 124748 states and 141755 transitions. Second operand  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 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 20:56:58,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:56:58,024 INFO  L93              Difference]: Finished difference Result 289692 states and 333579 transitions.
[2023-04-01 20:56:58,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:56:58,025 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 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 1994
[2023-04-01 20:56:58,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:56:58,550 INFO  L225             Difference]: With dead ends: 289692
[2023-04-01 20:56:58,550 INFO  L226             Difference]: Without dead ends: 164950
[2023-04-01 20:56:58,974 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 1997 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 20:56:58,975 INFO  L413           NwaCegarLoop]: 591 mSDtfsCounter, 6577 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 9667 mSolverCounterSat, 3671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6577 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 13338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3671 IncrementalHoareTripleChecker+Valid, 9667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2023-04-01 20:56:58,976 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6577 Valid, 1443 Invalid, 13338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3671 Valid, 9667 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2023-04-01 20:56:59,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 164950 states.
[2023-04-01 20:57:01,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 164950 to 162368.
[2023-04-01 20:57:01,749 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162368 states, 157525 states have (on average 1.05760990318997) internal successors, (166600), 158236 states have internal predecessors, (166600), 706 states have call successors, (706), 706 states have call predecessors, (706), 4136 states have return successors, (18769), 3425 states have call predecessors, (18769), 705 states have call successors, (18769)
[2023-04-01 20:57:02,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162368 states to 162368 states and 186075 transitions.
[2023-04-01 20:57:02,393 INFO  L78                 Accepts]: Start accepts. Automaton has 162368 states and 186075 transitions. Word has length 1994
[2023-04-01 20:57:02,393 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:57:02,393 INFO  L495      AbstractCegarLoop]: Abstraction has 162368 states and 186075 transitions.
[2023-04-01 20:57:02,394 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 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 20:57:02,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 162368 states and 186075 transitions.
[2023-04-01 20:57:02,857 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2108
[2023-04-01 20:57:02,858 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:57:02,859 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:02,866 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-04-01 20:57:03,059 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 20:57:03,060 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:57:03,060 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:57:03,060 INFO  L85        PathProgramCache]: Analyzing trace with hash 975326052, now seen corresponding path program 1 times
[2023-04-01 20:57:03,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:57:03,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516100390]
[2023-04-01 20:57:03,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:03,061 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:57:03,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:05,992 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:57:05,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,009 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:57:06,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,034 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:57:06,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,052 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:57:06,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,155 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311
[2023-04-01 20:57:06,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 921 backedges. 590 proven. 144 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2023-04-01 20:57:06,208 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:57:06,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516100390]
[2023-04-01 20:57:06,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516100390] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:57:06,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615391623]
[2023-04-01 20:57:06,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:06,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:06,209 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:57:06,213 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 20:57:06,219 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 20:57:06,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:06,955 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:57:06,973 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:57:07,207 INFO  L134       CoverageAnalysis]: Checked inductivity of 921 backedges. 742 proven. 2 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked.
[2023-04-01 20:57:07,207 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:57:07,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 921 backedges. 595 proven. 142 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2023-04-01 20:57:07,667 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615391623] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:57:07,667 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:57:07,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11
[2023-04-01 20:57:07,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301327928]
[2023-04-01 20:57:07,668 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:57:07,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-01 20:57:07,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:57:07,673 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-01 20:57:07,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2023-04-01 20:57:07,674 INFO  L87              Difference]: Start difference. First operand 162368 states and 186075 transitions. Second operand  has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 4 states have call successors, (19), 7 states have call predecessors, (19), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 20:57:22,889 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:57:22,889 INFO  L93              Difference]: Finished difference Result 367057 states and 423359 transitions.
[2023-04-01 20:57:22,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-04-01 20:57:22,892 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 4 states have call successors, (19), 7 states have call predecessors, (19), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 2107
[2023-04-01 20:57:22,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:57:23,699 INFO  L225             Difference]: With dead ends: 367057
[2023-04-01 20:57:23,699 INFO  L226             Difference]: Without dead ends: 204695
[2023-04-01 20:57:23,811 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4259 GetRequests, 4233 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650
[2023-04-01 20:57:23,812 INFO  L413           NwaCegarLoop]: 364 mSDtfsCounter, 14613 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 18178 mSolverCounterSat, 5461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14613 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 23639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5461 IncrementalHoareTripleChecker+Valid, 18178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time
[2023-04-01 20:57:23,812 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14613 Valid, 1702 Invalid, 23639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5461 Valid, 18178 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time]
[2023-04-01 20:57:23,971 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204695 states.
[2023-04-01 20:57:26,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204695 to 200033.
[2023-04-01 20:57:26,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 200033 states, 194368 states have (on average 1.0382573263088575) internal successors, (201804), 195197 states have internal predecessors, (201804), 874 states have call successors, (874), 874 states have call predecessors, (874), 4790 states have return successors, (18357), 3961 states have call predecessors, (18357), 873 states have call successors, (18357)
[2023-04-01 20:57:27,919 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200033 states to 200033 states and 221035 transitions.
[2023-04-01 20:57:27,920 INFO  L78                 Accepts]: Start accepts. Automaton has 200033 states and 221035 transitions. Word has length 2107
[2023-04-01 20:57:27,922 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:57:27,922 INFO  L495      AbstractCegarLoop]: Abstraction has 200033 states and 221035 transitions.
[2023-04-01 20:57:27,923 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 4 states have call successors, (19), 7 states have call predecessors, (19), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 20:57:27,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 200033 states and 221035 transitions.
[2023-04-01 20:57:28,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2203
[2023-04-01 20:57:28,356 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:57:28,357 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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]
[2023-04-01 20:57:28,365 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 20:57:28,565 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 20:57:28,566 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:57:28,567 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:57:28,567 INFO  L85        PathProgramCache]: Analyzing trace with hash 971359740, now seen corresponding path program 1 times
[2023-04-01 20:57:28,567 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:57:28,567 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81777898]
[2023-04-01 20:57:28,568 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:28,568 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:57:29,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:33,861 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:57:33,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:33,874 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:57:33,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:33,909 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:57:33,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:33,925 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:57:33,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:33,948 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:57:33,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:34,004 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406
[2023-04-01 20:57:34,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:34,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 1273 backedges. 530 proven. 5 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-04-01 20:57:34,082 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:57:34,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81777898]
[2023-04-01 20:57:34,082 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81777898] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:57:34,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136336477]
[2023-04-01 20:57:34,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:34,083 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:34,083 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:57:34,084 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 20:57:34,116 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 20:57:34,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:34,715 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-04-01 20:57:34,737 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:57:36,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 1273 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-04-01 20:57:36,357 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:57:36,358 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136336477] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:57:36,358 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:57:36,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2023-04-01 20:57:36,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291091053]
[2023-04-01 20:57:36,359 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:57:36,361 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:57:36,361 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:57:36,362 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:57:36,362 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:57:36,363 INFO  L87              Difference]: Start difference. First operand 200033 states and 221035 transitions. Second operand  has 3 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)
[2023-04-01 20:57:44,273 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:57:44,274 INFO  L93              Difference]: Finished difference Result 541191 states and 603983 transitions.
[2023-04-01 20:57:44,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:57:44,274 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 2202
[2023-04-01 20:57:44,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:57:45,339 INFO  L225             Difference]: With dead ends: 541191
[2023-04-01 20:57:45,339 INFO  L226             Difference]: Without dead ends: 341164
[2023-04-01 20:57:45,502 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2225 GetRequests, 2221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:57:45,503 INFO  L413           NwaCegarLoop]: 1805 mSDtfsCounter, 309 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 1888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 7189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1888 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-04-01 20:57:45,503 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 2026 Invalid, 7189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1888 Valid, 5301 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-04-01 20:57:45,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 341164 states.