/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/Problem04_label42.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-30 22:50:24,442 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-03-30 22:50:24,510 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-03-30 22:50:24,510 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-03-30 22:50:24,511 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-03-30 22:50:24,511 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-30 22:50:24,512 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-30 22:50:24,513 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
[2023-03-30 22:50:24,532 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-30 22:50:24,532 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-30 22:50:24,533 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-30 22:50:24,533 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-30 22:50:24,534 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-30 22:50:24,534 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-30 22:50:24,534 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-03-30 22:50:24,534 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-03-30 22:50:24,534 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-03-30 22:50:24,535 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-30 22:50:24,535 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-30 22:50:24,536 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-30 22:50:24,537 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-30 22:50:24,537 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:50:24,538 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-30 22:50:24,538 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-30 22:50:24,538 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-30 22:50:24,538 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-03-30 22:50:24,538 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-30 22:50:24,539 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-03-30 22:50:24,539 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-30 22:50:24,539 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-03-30 22:50:24,539 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-03-30 22:50:24,539 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-03-30 22:50:24,539 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-03-30 22:50:24,752 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-30 22:50:24,776 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-30 22:50:24,777 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-30 22:50:24,778 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-30 22:50:24,778 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-30 22:50:24,779 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label42.c
[2023-03-30 22:50:25,966 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-30 22:50:26,335 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-30 22:50:26,335 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label42.c
[2023-03-30 22:50:26,362 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fe2022c0/a7e3f0b42606474296865e7729f274fd/FLAG7406b6495
[2023-03-30 22:50:26,375 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fe2022c0/a7e3f0b42606474296865e7729f274fd
[2023-03-30 22:50:26,377 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-30 22:50:26,379 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-30 22:50:26,381 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-30 22:50:26,381 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-30 22:50:26,384 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-30 22:50:26,384 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:50:26" (1/1) ...
[2023-03-30 22:50:26,385 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f059965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:26, skipping insertion in model container
[2023-03-30 22:50:26,385 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:50:26" (1/1) ...
[2023-03-30 22:50:26,390 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-30 22:50:26,496 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-30 22:50:27,364 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/Problem04_label42.c[184279,184292]
[2023-03-30 22:50:27,373 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:50:27,381 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-30 22:50:27,719 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/Problem04_label42.c[184279,184292]
[2023-03-30 22:50:27,722 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:50:27,741 INFO  L208         MainTranslator]: Completed translation
[2023-03-30 22:50:27,741 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27 WrapperNode
[2023-03-30 22:50:27,741 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-30 22:50:27,742 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-30 22:50:27,742 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-30 22:50:27,742 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-30 22:50:27,750 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,751 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,795 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,796 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,862 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,882 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,910 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,922 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,950 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-30 22:50:27,951 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-30 22:50:27,951 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-30 22:50:27,951 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-30 22:50:27,951 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (1/1) ...
[2023-03-30 22:50:27,956 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:50:27,963 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:50:27,974 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)
[2023-03-30 22:50:27,980 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
[2023-03-30 22:50:28,003 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-30 22:50:28,004 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-03-30 22:50:28,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-30 22:50:28,005 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-30 22:50:28,006 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-30 22:50:28,180 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-30 22:50:28,182 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-30 22:50:31,004 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-30 22:50:31,029 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-30 22:50:31,029 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-30 22:50:31,034 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:50:31 BoogieIcfgContainer
[2023-03-30 22:50:31,034 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-30 22:50:31,037 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-30 22:50:31,037 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-30 22:50:31,040 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-30 22:50:31,040 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:50:26" (1/3) ...
[2023-03-30 22:50:31,040 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e95ea4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:50:31, skipping insertion in model container
[2023-03-30 22:50:31,040 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:50:27" (2/3) ...
[2023-03-30 22:50:31,041 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e95ea4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:50:31, skipping insertion in model container
[2023-03-30 22:50:31,041 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:50:31" (3/3) ...
[2023-03-30 22:50:31,042 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem04_label42.c
[2023-03-30 22:50:31,055 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-30 22:50:31,055 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-30 22:50:31,104 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-30 22:50:31,109 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;@2044af64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-03-30 22:50:31,109 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-30 22:50:31,116 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-03-30 22:50:31,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 827
[2023-03-30 22:50:31,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:50:31,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:50:31,148 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:50:31,152 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:50:31,152 INFO  L85        PathProgramCache]: Analyzing trace with hash 1226241784, now seen corresponding path program 1 times
[2023-03-30 22:50:31,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:50:31,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083024678]
[2023-03-30 22:50:31,160 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:50:31,160 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:50:31,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:34,171 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:50:34,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:34,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:50:34,223 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:50:34,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083024678]
[2023-03-30 22:50:34,224 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083024678] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:50:34,224 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:50:34,224 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-30 22:50:34,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190943647]
[2023-03-30 22:50:34,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:50:34,233 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-30 22:50:34,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:50:34,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-30 22:50:34,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-03-30 22:50:34,269 INFO  L87              Difference]: Start difference. First operand  has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 5 states, 4 states have (on average 204.75) internal successors, (819), 3 states have internal predecessors, (819), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 22:50:41,337 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:50:41,337 INFO  L93              Difference]: Finished difference Result 3521 states and 6826 transitions.
[2023-03-30 22:50:41,339 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-03-30 22:50:41,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 204.75) internal successors, (819), 3 states have internal predecessors, (819), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 826
[2023-03-30 22:50:41,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:50:41,380 INFO  L225             Difference]: With dead ends: 3521
[2023-03-30 22:50:41,380 INFO  L226             Difference]: Without dead ends: 2547
[2023-03-30 22:50:41,390 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-03-30 22:50:41,395 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 2837 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5828 mSolverCounterSat, 1509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 5828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-03-30 22:50:41,396 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 65 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 5828 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-03-30 22:50:41,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2547 states.
[2023-03-30 22:50:41,543 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534.
[2023-03-30 22:50:41,548 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2534 states, 2497 states have (on average 1.632358830596716) internal successors, (4076), 2500 states have internal predecessors, (4076), 14 states have call successors, (14), 14 states have call predecessors, (14), 22 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49)
[2023-03-30 22:50:41,556 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions.
[2023-03-30 22:50:41,558 INFO  L78                 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 826
[2023-03-30 22:50:41,560 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:50:41,560 INFO  L495      AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions.
[2023-03-30 22:50:41,560 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 204.75) internal successors, (819), 3 states have internal predecessors, (819), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 22:50:41,560 INFO  L276                IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions.
[2023-03-30 22:50:41,577 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 842
[2023-03-30 22:50:41,577 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:50:41,578 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:50:41,578 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-30 22:50:41,578 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:50:41,579 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:50:41,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -57323764, now seen corresponding path program 1 times
[2023-03-30 22:50:41,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:50:41,580 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809284048]
[2023-03-30 22:50:41,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:50:41,580 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:50:41,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:42,468 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:50:42,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:42,484 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 22:50:42,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:42,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:50:42,516 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:50:42,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809284048]
[2023-03-30 22:50:42,517 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809284048] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:50:42,517 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:50:42,517 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-03-30 22:50:42,518 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589321393]
[2023-03-30 22:50:42,518 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:50:42,521 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-03-30 22:50:42,521 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:50:42,522 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-03-30 22:50:42,523 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-03-30 22:50:42,523 INFO  L87              Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand  has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 22:50:47,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:50:47,812 INFO  L93              Difference]: Finished difference Result 7725 states and 12758 transitions.
[2023-03-30 22:50:47,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-03-30 22:50:47,813 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 841
[2023-03-30 22:50:47,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:50:47,829 INFO  L225             Difference]: With dead ends: 7725
[2023-03-30 22:50:47,829 INFO  L226             Difference]: Without dead ends: 5197
[2023-03-30 22:50:47,833 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
[2023-03-30 22:50:47,834 INFO  L413           NwaCegarLoop]: 36 mSDtfsCounter, 3099 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 1648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1648 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-03-30 22:50:47,835 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 124 Invalid, 7694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1648 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-03-30 22:50:47,838 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5197 states.
[2023-03-30 22:50:47,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5152.
[2023-03-30 22:50:47,945 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5152 states, 5048 states have (on average 1.5305071315372425) internal successors, (7726), 5064 states have internal predecessors, (7726), 26 states have call successors, (26), 26 states have call predecessors, (26), 77 states have return successors, (253), 61 states have call predecessors, (253), 25 states have call successors, (253)
[2023-03-30 22:50:47,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 8005 transitions.
[2023-03-30 22:50:47,957 INFO  L78                 Accepts]: Start accepts. Automaton has 5152 states and 8005 transitions. Word has length 841
[2023-03-30 22:50:47,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:50:47,957 INFO  L495      AbstractCegarLoop]: Abstraction has 5152 states and 8005 transitions.
[2023-03-30 22:50:47,958 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 4 states have internal predecessors, (832), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 22:50:47,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 5152 states and 8005 transitions.
[2023-03-30 22:50:47,979 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 868
[2023-03-30 22:50:47,979 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:50:47,980 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:50:47,980 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-03-30 22:50:47,980 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:50:47,980 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:50:47,980 INFO  L85        PathProgramCache]: Analyzing trace with hash 1697043278, now seen corresponding path program 1 times
[2023-03-30 22:50:47,981 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:50:47,981 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334939843]
[2023-03-30 22:50:47,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:50:47,981 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:50:48,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:48,993 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:50:48,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:49,010 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 22:50:49,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:49,023 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2023-03-30 22:50:49,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:49,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-03-30 22:50:49,046 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:50:49,046 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334939843]
[2023-03-30 22:50:49,046 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334939843] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-30 22:50:49,048 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111868039]
[2023-03-30 22:50:49,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:50:49,048 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:50:49,048 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:50:49,063 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)
[2023-03-30 22:50:49,066 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-30 22:50:49,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:50:49,381 INFO  L262         TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-03-30 22:50:49,414 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:50:49,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:50:49,517 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-30 22:50:49,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:50:49,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111868039] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-30 22:50:49,659 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-30 22:50:49,659 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11
[2023-03-30 22:50:49,659 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449638442]
[2023-03-30 22:50:49,659 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-30 22:50:49,661 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-03-30 22:50:49,661 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:50:49,662 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-03-30 22:50:49,662 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2023-03-30 22:50:49,662 INFO  L87              Difference]: Start difference. First operand 5152 states and 8005 transitions. Second operand  has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2023-03-30 22:50:58,765 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:50:58,765 INFO  L93              Difference]: Finished difference Result 26348 states and 44071 transitions.
[2023-03-30 22:50:58,765 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-03-30 22:50:58,766 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 867
[2023-03-30 22:50:58,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:50:58,842 INFO  L225             Difference]: With dead ends: 26348
[2023-03-30 22:50:58,842 INFO  L226             Difference]: Without dead ends: 21202
[2023-03-30 22:50:58,857 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1743 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406
[2023-03-30 22:50:58,858 INFO  L413           NwaCegarLoop]: 66 mSDtfsCounter, 12234 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8952 mSolverCounterSat, 6149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12234 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 15101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6149 IncrementalHoareTripleChecker+Valid, 8952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2023-03-30 22:50:58,858 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12234 Valid, 306 Invalid, 15101 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6149 Valid, 8952 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2023-03-30 22:50:58,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21202 states.
[2023-03-30 22:50:59,290 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21202 to 21042.
[2023-03-30 22:50:59,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21042 states, 20461 states have (on average 1.322076144860955) internal successors, (27051), 20598 states have internal predecessors, (27051), 98 states have call successors, (98), 98 states have call predecessors, (98), 482 states have return successors, (2870), 345 states have call predecessors, (2870), 97 states have call successors, (2870)
[2023-03-30 22:50:59,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21042 states to 21042 states and 30019 transitions.
[2023-03-30 22:50:59,365 INFO  L78                 Accepts]: Start accepts. Automaton has 21042 states and 30019 transitions. Word has length 867
[2023-03-30 22:50:59,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:50:59,366 INFO  L495      AbstractCegarLoop]: Abstraction has 21042 states and 30019 transitions.
[2023-03-30 22:50:59,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 80.36363636363636) internal successors, (884), 9 states have internal predecessors, (884), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2023-03-30 22:50:59,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 21042 states and 30019 transitions.
[2023-03-30 22:50:59,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 919
[2023-03-30 22:50:59,408 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:50:59,408 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:50:59,432 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-03-30 22:50:59,614 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:50:59,614 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:50:59,615 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:50:59,615 INFO  L85        PathProgramCache]: Analyzing trace with hash 640060364, now seen corresponding path program 1 times
[2023-03-30 22:50:59,615 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:50:59,615 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686196618]
[2023-03-30 22:50:59,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:50:59,616 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:50:59,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:51:01,285 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:51:01,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:51:01,315 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 22:51:01,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:51:01,345 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-03-30 22:51:01,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:51:01,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-03-30 22:51:01,471 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:51:01,471 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686196618]
[2023-03-30 22:51:01,471 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686196618] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-30 22:51:01,472 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310944504]
[2023-03-30 22:51:01,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:51:01,472 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:51:01,472 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:51:01,481 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)
[2023-03-30 22:51:01,536 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-30 22:51:01,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:51:01,799 INFO  L262         TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-03-30 22:51:01,809 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:51:01,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:51:01,916 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-30 22:51:02,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:51:02,132 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310944504] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-30 22:51:02,132 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-30 22:51:02,132 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13
[2023-03-30 22:51:02,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055720587]
[2023-03-30 22:51:02,133 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-30 22:51:02,134 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-03-30 22:51:02,134 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:51:02,135 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-03-30 22:51:02,135 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-03-30 22:51:02,135 INFO  L87              Difference]: Start difference. First operand 21042 states and 30019 transitions. Second operand  has 13 states, 13 states have (on average 80.92307692307692) internal successors, (1052), 11 states have internal predecessors, (1052), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)
[2023-03-30 22:51:26,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:51:26,983 INFO  L93              Difference]: Finished difference Result 174522 states and 275746 transitions.
[2023-03-30 22:51:26,983 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2023-03-30 22:51:26,984 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 80.92307692307692) internal successors, (1052), 11 states have internal predecessors, (1052), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 918
[2023-03-30 22:51:26,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.