/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_label20.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 20:54:34,720 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-04-01 20:54:34,789 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 20:54:34,790 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 20:54:34,791 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 20:54:34,792 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 20:54:34,798 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 20:54:34,830 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 20:54:34,830 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 20:54:34,831 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 20:54:34,831 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 20:54:34,832 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 20:54:34,832 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 20:54:34,833 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-04-01 20:54:34,833 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-04-01 20:54:34,833 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-04-01 20:54:34,833 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 20:54:34,834 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 20:54:34,835 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:54:34,835 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 20:54:34,835 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 20:54:34,836 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-04-01 20:54:34,837 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-04-01 20:54:34,837 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-04-01 20:54:34,837 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-04-01 20:54:35,051 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 20:54:35,072 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 20:54:35,074 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 20:54:35,075 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 20:54:35,075 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 20:54:35,076 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label20.c
[2023-04-01 20:54:36,154 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 20:54:36,831 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 20:54:36,831 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label20.c
[2023-04-01 20:54:36,877 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd0e6a02/1bcef31e10074ce49bb5fa7d41c0619e/FLAG527693c86
[2023-04-01 20:54:36,888 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd0e6a02/1bcef31e10074ce49bb5fa7d41c0619e
[2023-04-01 20:54:36,890 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 20:54:36,891 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 20:54:36,892 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 20:54:36,892 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 20:54:36,897 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 20:54:36,898 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:54:36" (1/1) ...
[2023-04-01 20:54:36,899 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788a146c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:36, skipping insertion in model container
[2023-04-01 20:54:36,899 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:54:36" (1/1) ...
[2023-04-01 20:54:36,904 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 20:54:37,073 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 20:54:38,612 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_label20.c[381200,381213]
[2023-04-01 20:54:38,627 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:54:38,638 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 20:54:39,396 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_label20.c[381200,381213]
[2023-04-01 20:54:39,400 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 20:54:39,447 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 20:54:39,448 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39 WrapperNode
[2023-04-01 20:54:39,448 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 20:54:39,450 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 20:54:39,450 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 20:54:39,450 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 20:54:39,461 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,461 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,549 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,549 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,701 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,866 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,887 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,911 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,966 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 20:54:39,966 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 20:54:39,967 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 20:54:39,967 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 20:54:39,967 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (1/1) ...
[2023-04-01 20:54:39,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 20:54:39,983 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:54:39,998 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 20:54:40,025 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 20:54:40,044 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 20:54:40,044 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 20:54:40,045 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 20:54:40,045 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-04-01 20:54:40,093 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 20:54:40,093 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 20:54:40,094 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 20:54:40,095 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 20:54:40,220 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 20:54:40,223 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 20:54:46,288 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 20:54:46,314 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 20:54:46,314 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 20:54:46,318 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:54:46 BoogieIcfgContainer
[2023-04-01 20:54:46,318 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 20:54:46,320 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 20:54:46,320 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 20:54:46,323 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 20:54:46,323 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:54:36" (1/3) ...
[2023-04-01 20:54:46,324 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6ea46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:54:46, skipping insertion in model container
[2023-04-01 20:54:46,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:54:39" (2/3) ...
[2023-04-01 20:54:46,324 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6ea46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:54:46, skipping insertion in model container
[2023-04-01 20:54:46,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:54:46" (3/3) ...
[2023-04-01 20:54:46,325 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label20.c
[2023-04-01 20:54:46,340 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 20:54:46,340 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 20:54:46,417 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 20:54:46,423 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;@7b1ca89f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-04-01 20:54:46,423 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 20:54:46,433 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 20:54:46,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1705
[2023-04-01 20:54:46,541 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:54:46,542 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:54:46,543 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:54:46,547 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:54:46,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 617516745, now seen corresponding path program 1 times
[2023-04-01 20:54:46,556 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:54:46,556 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109109644]
[2023-04-01 20:54:46,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:54:46,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:54:47,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:55,884 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:54:55,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:54:55,950 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 20:54:55,951 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:54:55,951 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109109644]
[2023-04-01 20:54:55,952 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109109644] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:54:55,952 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:54:55,952 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-04-01 20:54:55,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884597396]
[2023-04-01 20:54:55,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:54:55,962 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:54:55,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:54:56,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:54:56,002 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-04-01 20:54:56,010 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 423.25) internal successors, (1693), 3 states have internal predecessors, (1693), 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 20:55:09,853 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:09,853 INFO  L93              Difference]: Finished difference Result 8124 states and 15411 transitions.
[2023-04-01 20:55:09,855 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:55:09,857 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 423.25) internal successors, (1693), 3 states have internal predecessors, (1693), 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 1704
[2023-04-01 20:55:09,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:09,909 INFO  L225             Difference]: With dead ends: 8124
[2023-04-01 20:55:09,909 INFO  L226             Difference]: Without dead ends: 5834
[2023-04-01 20:55:10,006 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 20:55:10,018 INFO  L413           NwaCegarLoop]: 333 mSDtfsCounter, 6284 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 12692 mSolverCounterSat, 2990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 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, 13.2s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:10,019 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6284 Valid, 633 Invalid, 15682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2990 Valid, 12692 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2023-04-01 20:55:10,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5834 states.
[2023-04-01 20:55:10,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801.
[2023-04-01 20:55:10,366 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 20:55:10,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions.
[2023-04-01 20:55:10,397 INFO  L78                 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1704
[2023-04-01 20:55:10,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:10,401 INFO  L495      AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions.
[2023-04-01 20:55:10,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 423.25) internal successors, (1693), 3 states have internal predecessors, (1693), 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 20:55:10,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions.
[2023-04-01 20:55:10,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1714
[2023-04-01 20:55:10,484 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:10,485 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]
[2023-04-01 20:55:10,485 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 20:55:10,486 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:10,486 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:10,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 579593088, now seen corresponding path program 1 times
[2023-04-01 20:55:10,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:10,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965339270]
[2023-04-01 20:55:10,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:10,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:10,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:13,415 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:13,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:13,446 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:13,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:13,475 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 20:55:13,476 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:13,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965339270]
[2023-04-01 20:55:13,477 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965339270] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:13,477 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:13,477 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-01 20:55:13,478 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088747330]
[2023-04-01 20:55:13,478 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:13,481 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-04-01 20:55:13,481 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:13,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-04-01 20:55:13,484 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-04-01 20:55:13,485 INFO  L87              Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand  has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 5 states have internal predecessors, (1700), 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 20:55:27,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:27,681 INFO  L93              Difference]: Finished difference Result 22514 states and 37516 transitions.
[2023-04-01 20:55:27,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-01 20:55:27,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 5 states have internal predecessors, (1700), 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 1713
[2023-04-01 20:55:27,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:27,779 INFO  L225             Difference]: With dead ends: 22514
[2023-04-01 20:55:27,779 INFO  L226             Difference]: Without dead ends: 16719
[2023-04-01 20:55:27,805 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 20:55:27,808 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 16686 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 15208 mSolverCounterSat, 5258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s 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, 13.5s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:27,808 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16686 Valid, 1283 Invalid, 20466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5258 Valid, 15208 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time]
[2023-04-01 20:55:27,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16719 states.
[2023-04-01 20:55:28,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 16670.
[2023-04-01 20:55:28,258 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 20:55:28,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 24925 transitions.
[2023-04-01 20:55:28,298 INFO  L78                 Accepts]: Start accepts. Automaton has 16670 states and 24925 transitions. Word has length 1713
[2023-04-01 20:55:28,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:28,298 INFO  L495      AbstractCegarLoop]: Abstraction has 16670 states and 24925 transitions.
[2023-04-01 20:55:28,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 5 states have internal predecessors, (1700), 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 20:55:28,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 16670 states and 24925 transitions.
[2023-04-01 20:55:28,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1720
[2023-04-01 20:55:28,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:28,363 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:55:28,363 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 20:55:28,363 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:28,363 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:28,364 INFO  L85        PathProgramCache]: Analyzing trace with hash -387640106, now seen corresponding path program 1 times
[2023-04-01 20:55:28,364 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:28,364 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491764499]
[2023-04-01 20:55:28,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:28,365 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:28,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:30,088 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:30,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:30,111 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:30,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:30,138 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 20:55:30,138 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:30,138 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491764499]
[2023-04-01 20:55:30,138 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491764499] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:30,139 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:30,139 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:55:30,140 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204411637]
[2023-04-01 20:55:30,140 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:30,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:55:30,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:30,144 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:55:30,144 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:55:30,145 INFO  L87              Difference]: Start difference. First operand 16670 states and 24925 transitions. Second operand  has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 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 20:55:38,752 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:38,752 INFO  L93              Difference]: Finished difference Result 38929 states and 58417 transitions.
[2023-04-01 20:55:38,752 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:55:38,753 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 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 1719
[2023-04-01 20:55:38,753 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:38,817 INFO  L225             Difference]: With dead ends: 38929
[2023-04-01 20:55:38,818 INFO  L226             Difference]: Without dead ends: 22265
[2023-04-01 20:55:38,851 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 20:55:38,855 INFO  L413           NwaCegarLoop]: 297 mSDtfsCounter, 16273 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 10609 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s 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, 8.0s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:38,857 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16273 Valid, 790 Invalid, 12423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 10609 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2023-04-01 20:55:38,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22265 states.
[2023-04-01 20:55:39,231 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22156.
[2023-04-01 20:55:39,258 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 20:55:39,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22156 states to 22156 states and 29530 transitions.
[2023-04-01 20:55:39,299 INFO  L78                 Accepts]: Start accepts. Automaton has 22156 states and 29530 transitions. Word has length 1719
[2023-04-01 20:55:39,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:39,299 INFO  L495      AbstractCegarLoop]: Abstraction has 22156 states and 29530 transitions.
[2023-04-01 20:55:39,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 4 states have internal predecessors, (1706), 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 20:55:39,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 22156 states and 29530 transitions.
[2023-04-01 20:55:39,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1723
[2023-04-01 20:55:39,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:39,368 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]
[2023-04-01 20:55:39,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 20:55:39,368 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:39,368 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:39,369 INFO  L85        PathProgramCache]: Analyzing trace with hash -1218133070, now seen corresponding path program 1 times
[2023-04-01 20:55:39,369 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:39,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715606442]
[2023-04-01 20:55:39,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:39,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:39,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:40,945 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:40,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:40,961 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:40,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:40,986 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 20:55:40,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:40,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715606442]
[2023-04-01 20:55:40,987 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715606442] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:40,987 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 20:55:40,987 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 20:55:40,987 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692731222]
[2023-04-01 20:55:40,987 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:40,989 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-01 20:55:40,989 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:40,991 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-01 20:55:40,991 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:55:40,992 INFO  L87              Difference]: Start difference. First operand 22156 states and 29530 transitions. Second operand  has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 4 states have internal predecessors, (1709), 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 20:55:51,050 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:55:51,051 INFO  L93              Difference]: Finished difference Result 66740 states and 92732 transitions.
[2023-04-01 20:55:51,051 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-01 20:55:51,052 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 4 states have internal predecessors, (1709), 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 1722
[2023-04-01 20:55:51,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:55:51,184 INFO  L225             Difference]: With dead ends: 66740
[2023-04-01 20:55:51,184 INFO  L226             Difference]: Without dead ends: 44590
[2023-04-01 20:55:51,231 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 20:55:51,237 INFO  L413           NwaCegarLoop]: 311 mSDtfsCounter, 11299 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 12444 mSolverCounterSat, 3374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s 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, 9.4s IncrementalHoareTripleChecker+Time
[2023-04-01 20:55:51,238 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11299 Valid, 1049 Invalid, 15818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3374 Valid, 12444 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2023-04-01 20:55:51,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44590 states.
[2023-04-01 20:55:52,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44590 to 42656.
[2023-04-01 20:55:52,122 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 20:55:52,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42656 states to 42656 states and 55505 transitions.
[2023-04-01 20:55:52,213 INFO  L78                 Accepts]: Start accepts. Automaton has 42656 states and 55505 transitions. Word has length 1722
[2023-04-01 20:55:52,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:55:52,213 INFO  L495      AbstractCegarLoop]: Abstraction has 42656 states and 55505 transitions.
[2023-04-01 20:55:52,214 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 4 states have internal predecessors, (1709), 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 20:55:52,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 42656 states and 55505 transitions.
[2023-04-01 20:55:52,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2023-04-01 20:55:52,335 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:55:52,336 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 20:55:52,336 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 20:55:52,336 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:55:52,336 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:55:52,337 INFO  L85        PathProgramCache]: Analyzing trace with hash -96549526, now seen corresponding path program 1 times
[2023-04-01 20:55:52,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:55:52,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408614193]
[2023-04-01 20:55:52,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:52,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:55:52,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:56,103 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:55:56,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:56,117 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:55:56,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:56,135 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 20:55:56,135 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:55:56,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408614193]
[2023-04-01 20:55:56,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408614193] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:55:56,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483123247]
[2023-04-01 20:55:56,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:55:56,136 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:55:56,136 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:55:56,144 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 20:55:56,145 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 20:55:56,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:55:56,724 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-04-01 20:55:56,763 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:55:58,947 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 20:55:58,948 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:55:58,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [483123247] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:55:58,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:55:58,949 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2023-04-01 20:55:58,949 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834755897]
[2023-04-01 20:55:58,949 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:55:58,951 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:55:58,951 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:55:58,953 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:55:58,953 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-04-01 20:55:58,953 INFO  L87              Difference]: Start difference. First operand 42656 states and 55505 transitions. Second operand  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 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 20:56:04,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:56:04,104 INFO  L93              Difference]: Finished difference Result 85306 states and 111024 transitions.
[2023-04-01 20:56:04,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:56:04,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 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 1726
[2023-04-01 20:56:04,107 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:56:04,232 INFO  L225             Difference]: With dead ends: 85306
[2023-04-01 20:56:04,232 INFO  L226             Difference]: Without dead ends: 42656
[2023-04-01 20:56:04,302 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1741 GetRequests, 1737 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 20:56:04,303 INFO  L413           NwaCegarLoop]: 3074 mSDtfsCounter, 373 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5736 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 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, 4.6s IncrementalHoareTripleChecker+Time
[2023-04-01 20:56:04,303 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 3444 Invalid, 6586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 5736 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-04-01 20:56:04,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42656 states.
[2023-04-01 20:56:05,167 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42656 to 42651.
[2023-04-01 20:56:05,211 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 20:56:05,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42651 states to 42651 states and 51688 transitions.
[2023-04-01 20:56:05,298 INFO  L78                 Accepts]: Start accepts. Automaton has 42651 states and 51688 transitions. Word has length 1726
[2023-04-01 20:56:05,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:56:05,299 INFO  L495      AbstractCegarLoop]: Abstraction has 42651 states and 51688 transitions.
[2023-04-01 20:56:05,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 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 20:56:05,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 42651 states and 51688 transitions.
[2023-04-01 20:56:05,391 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1745
[2023-04-01 20:56:05,391 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:56:05,392 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:56:05,404 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 20:56:05,600 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 20:56:05,600 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:56:05,601 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:56:05,601 INFO  L85        PathProgramCache]: Analyzing trace with hash 1503327251, now seen corresponding path program 1 times
[2023-04-01 20:56:05,601 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:56:05,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22269372]
[2023-04-01 20:56:05,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:05,602 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:56:05,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:08,289 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:56:08,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:08,313 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:56:08,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:08,332 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2023-04-01 20:56:08,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:08,361 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 20:56:08,362 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:56:08,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22269372]
[2023-04-01 20:56:08,362 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22269372] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:56:08,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325449004]
[2023-04-01 20:56:08,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:08,363 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:56:08,363 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:56:08,365 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 20:56:08,391 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 20:56:08,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:08,875 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:56:08,889 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:56:08,991 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 20:56:08,992 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:56:09,170 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 20:56:09,171 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325449004] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:56:09,171 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:56:09,172 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15
[2023-04-01 20:56:09,172 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114258459]
[2023-04-01 20:56:09,172 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:56:09,176 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-04-01 20:56:09,176 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:56:09,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-04-01 20:56:09,178 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210
[2023-04-01 20:56:09,178 INFO  L87              Difference]: Start difference. First operand 42651 states and 51688 transitions. Second operand  has 15 states, 15 states have (on average 118.0) internal successors, (1770), 13 states have internal predecessors, (1770), 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 20:56:49,139 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:56:49,140 INFO  L93              Difference]: Finished difference Result 181029 states and 234452 transitions.
[2023-04-01 20:56:49,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. 
[2023-04-01 20:56:49,141 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 118.0) internal successors, (1770), 13 states have internal predecessors, (1770), 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 1744
[2023-04-01 20:56:49,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:56:49,710 INFO  L225             Difference]: With dead ends: 181029
[2023-04-01 20:56:49,710 INFO  L226             Difference]: Without dead ends: 138384
[2023-04-01 20:56:49,762 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3622 GetRequests, 3525 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 20:56:49,763 INFO  L413           NwaCegarLoop]: 450 mSDtfsCounter, 38177 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 43897 mSolverCounterSat, 17136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38177 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 61033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17136 IncrementalHoareTripleChecker+Valid, 43897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time
[2023-04-01 20:56:49,763 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38177 Valid, 2935 Invalid, 61033 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17136 Valid, 43897 Invalid, 0 Unknown, 0 Unchecked, 35.9s Time]
[2023-04-01 20:56:49,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138384 states.
[2023-04-01 20:56:52,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138384 to 124857.
[2023-04-01 20:56:52,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124857 states, 120784 states have (on average 1.0598175255000661) internal successors, (128009), 121376 states have internal predecessors, (128009), 538 states have call successors, (538), 538 states have call predecessors, (538), 3534 states have return successors, (13371), 2942 states have call predecessors, (13371), 537 states have call successors, (13371)
[2023-04-01 20:56:52,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124857 states to 124857 states and 141918 transitions.
[2023-04-01 20:56:52,990 INFO  L78                 Accepts]: Start accepts. Automaton has 124857 states and 141918 transitions. Word has length 1744
[2023-04-01 20:56:52,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:56:52,993 INFO  L495      AbstractCegarLoop]: Abstraction has 124857 states and 141918 transitions.
[2023-04-01 20:56:52,994 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 118.0) internal successors, (1770), 13 states have internal predecessors, (1770), 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 20:56:52,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 124857 states and 141918 transitions.
[2023-04-01 20:56:53,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1865
[2023-04-01 20:56:53,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:56:53,262 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 20:56:53,272 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 20:56:53,469 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 20:56:53,470 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:56:53,470 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:56:53,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -28826145, now seen corresponding path program 1 times
[2023-04-01 20:56:53,471 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:56:53,471 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296425404]
[2023-04-01 20:56:53,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:53,471 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:56:53,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:55,587 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:56:55,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:55,614 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:56:55,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:55,656 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-04-01 20:56:55,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:55,683 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2023-04-01 20:56:55,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:55,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 277 backedges. 151 proven. 70 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked.
[2023-04-01 20:56:55,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:56:55,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296425404]
[2023-04-01 20:56:55,706 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296425404] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:56:55,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429427785]
[2023-04-01 20:56:55,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:56:55,706 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:56:55,707 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:56:55,709 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 20:56:55,736 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 20:56:56,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:56:56,270 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-04-01 20:56:56,287 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:56:56,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 277 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2023-04-01 20:56:56,378 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:56:56,378 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429427785] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:56:56,378 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:56:56,378 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10
[2023-04-01 20:56:56,378 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016524651]
[2023-04-01 20:56:56,378 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:56:56,381 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 20:56:56,381 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:56:56,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 20:56:56,383 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2023-04-01 20:56:56,383 INFO  L87              Difference]: Start difference. First operand 124857 states and 141918 transitions. Second operand  has 5 states, 5 states have (on average 346.8) internal successors, (1734), 4 states have internal predecessors, (1734), 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 20:57:05,030 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:57:05,030 INFO  L93              Difference]: Finished difference Result 291666 states and 335721 transitions.
[2023-04-01 20:57:05,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 20:57:05,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 346.8) internal successors, (1734), 4 states have internal predecessors, (1734), 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 1864
[2023-04-01 20:57:05,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:57:05,553 INFO  L225             Difference]: With dead ends: 291666
[2023-04-01 20:57:05,554 INFO  L226             Difference]: Without dead ends: 166815
[2023-04-01 20:57:05,635 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1878 GetRequests, 1867 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 20:57:05,635 INFO  L413           NwaCegarLoop]: 591 mSDtfsCounter, 6578 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 9666 mSolverCounterSat, 3673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6578 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 13339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3673 IncrementalHoareTripleChecker+Valid, 9666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-04-01 20:57:05,636 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6578 Valid, 1442 Invalid, 13339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3673 Valid, 9666 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-04-01 20:57:05,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166815 states.
[2023-04-01 20:57:07,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166815 to 162397.
[2023-04-01 20:57:08,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162397 states, 157544 states have (on average 1.0576219976641446) internal successors, (166622), 158258 states have internal predecessors, (166622), 706 states have call successors, (706), 706 states have call predecessors, (706), 4146 states have return successors, (18785), 3432 states have call predecessors, (18785), 705 states have call successors, (18785)
[2023-04-01 20:57:08,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162397 states to 162397 states and 186113 transitions.
[2023-04-01 20:57:08,510 INFO  L78                 Accepts]: Start accepts. Automaton has 162397 states and 186113 transitions. Word has length 1864
[2023-04-01 20:57:08,510 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:57:08,511 INFO  L495      AbstractCegarLoop]: Abstraction has 162397 states and 186113 transitions.
[2023-04-01 20:57:08,511 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 346.8) internal successors, (1734), 4 states have internal predecessors, (1734), 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 20:57:08,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 162397 states and 186113 transitions.
[2023-04-01 20:57:08,857 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2150
[2023-04-01 20:57:08,857 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:57:08,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:08,865 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-04-01 20:57:09,059 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 20:57:09,059 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:57:09,059 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:57:09,060 INFO  L85        PathProgramCache]: Analyzing trace with hash 2106381548, now seen corresponding path program 1 times
[2023-04-01 20:57:09,060 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:57:09,060 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901036489]
[2023-04-01 20:57:09,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:09,061 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:57:09,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:11,761 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:57:11,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:11,792 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:57:11,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:11,826 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:57:11,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:11,849 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:57:11,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:11,973 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311
[2023-04-01 20:57:11,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:12,028 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 20:57:12,028 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:57:12,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901036489]
[2023-04-01 20:57:12,028 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901036489] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:57:12,028 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636742658]
[2023-04-01 20:57:12,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:12,029 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:12,029 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:57:12,030 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 20:57:12,036 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 20:57:12,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:12,715 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 20:57:12,734 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:57:12,973 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 20:57:12,974 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 20:57:13,412 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 20:57:13,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [636742658] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 20:57:13,413 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-04-01 20:57:13,413 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11
[2023-04-01 20:57:13,413 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270207828]
[2023-04-01 20:57:13,414 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-04-01 20:57:13,417 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-01 20:57:13,417 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:57:13,419 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-01 20:57:13,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2023-04-01 20:57:13,420 INFO  L87              Difference]: Start difference. First operand 162397 states and 186113 transitions. Second operand  has 11 states, 11 states have (on average 207.54545454545453) internal successors, (2283), 9 states have internal predecessors, (2283), 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 20:57:28,295 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:57:28,295 INFO  L93              Difference]: Finished difference Result 367121 states and 423442 transitions.
[2023-04-01 20:57:28,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-04-01 20:57:28,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 207.54545454545453) internal successors, (2283), 9 states have internal predecessors, (2283), 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 2149
[2023-04-01 20:57:28,297 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:57:28,998 INFO  L225             Difference]: With dead ends: 367121
[2023-04-01 20:57:28,998 INFO  L226             Difference]: Without dead ends: 204730
[2023-04-01 20:57:29,196 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4343 GetRequests, 4317 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 20:57:29,197 INFO  L413           NwaCegarLoop]: 364 mSDtfsCounter, 15039 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 16135 mSolverCounterSat, 5099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15039 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 21234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5099 IncrementalHoareTripleChecker+Valid, 16135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2023-04-01 20:57:29,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15039 Valid, 1570 Invalid, 21234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5099 Valid, 16135 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2023-04-01 20:57:29,363 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204730 states.
[2023-04-01 20:57:31,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204730 to 200108.
[2023-04-01 20:57:32,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 200108 states, 194416 states have (on average 1.0382633116615916) internal successors, (201855), 195253 states have internal predecessors, (201855), 874 states have call successors, (874), 874 states have call predecessors, (874), 4817 states have return successors, (18420), 3980 states have call predecessors, (18420), 873 states have call successors, (18420)
[2023-04-01 20:57:32,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200108 states to 200108 states and 221149 transitions.
[2023-04-01 20:57:32,591 INFO  L78                 Accepts]: Start accepts. Automaton has 200108 states and 221149 transitions. Word has length 2149
[2023-04-01 20:57:32,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:57:32,591 INFO  L495      AbstractCegarLoop]: Abstraction has 200108 states and 221149 transitions.
[2023-04-01 20:57:32,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 207.54545454545453) internal successors, (2283), 9 states have internal predecessors, (2283), 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 20:57:32,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 200108 states and 221149 transitions.
[2023-04-01 20:57:32,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2245
[2023-04-01 20:57:32,998 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:57:32,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:33,006 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-04-01 20:57:33,199 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 20:57:33,200 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:57:33,200 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:57:33,201 INFO  L85        PathProgramCache]: Analyzing trace with hash 1731301764, now seen corresponding path program 1 times
[2023-04-01 20:57:33,201 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:57:33,201 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189207858]
[2023-04-01 20:57:33,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:33,201 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:57:33,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:37,964 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:57:37,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:37,979 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:57:37,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,013 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:57:38,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,025 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:57:38,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,058 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:57:38,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,110 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406
[2023-04-01 20:57:38,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 1273 backedges. 539 proven. 17 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked.
[2023-04-01 20:57:38,212 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:57:38,212 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189207858]
[2023-04-01 20:57:38,212 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189207858] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:57:38,213 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397810007]
[2023-04-01 20:57:38,213 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:38,213 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:38,215 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:57:38,216 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 20:57:38,218 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 20:57:38,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:38,891 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 18 conjunts are in the unsatisfiable core
[2023-04-01 20:57:38,909 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 20:57:40,714 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 20:57:40,714 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 20:57:40,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397810007] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 20:57:40,714 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 20:57:40,715 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7
[2023-04-01 20:57:40,715 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657646607]
[2023-04-01 20:57:40,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 20:57:40,716 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 20:57:40,717 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-04-01 20:57:40,718 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 20:57:40,718 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:57:40,718 INFO  L87              Difference]: Start difference. First operand 200108 states and 221149 transitions. Second operand  has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 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 20:57:46,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 20:57:46,987 INFO  L93              Difference]: Finished difference Result 403887 states and 446130 transitions.
[2023-04-01 20:57:46,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 20:57:46,988 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 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 2244
[2023-04-01 20:57:46,989 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 20:57:47,833 INFO  L225             Difference]: With dead ends: 403887
[2023-04-01 20:57:47,834 INFO  L226             Difference]: Without dead ends: 203785
[2023-04-01 20:57:48,156 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2270 GetRequests, 2265 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-04-01 20:57:48,156 INFO  L413           NwaCegarLoop]: 859 mSDtfsCounter, 670 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4993 mSolverCounterSat, 1939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 6932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1939 IncrementalHoareTripleChecker+Valid, 4993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-04-01 20:57:48,156 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 961 Invalid, 6932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1939 Valid, 4993 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-04-01 20:57:48,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203785 states.
[2023-04-01 20:57:50,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203785 to 199898.
[2023-04-01 20:57:50,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199898 states, 194280 states have (on average 1.0360459131150916) internal successors, (201283), 195103 states have internal predecessors, (201283), 874 states have call successors, (874), 874 states have call predecessors, (874), 4743 states have return successors, (17220), 3920 states have call predecessors, (17220), 873 states have call successors, (17220)
[2023-04-01 20:57:51,331 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199898 states to 199898 states and 219377 transitions.
[2023-04-01 20:57:51,332 INFO  L78                 Accepts]: Start accepts. Automaton has 199898 states and 219377 transitions. Word has length 2244
[2023-04-01 20:57:51,333 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 20:57:51,333 INFO  L495      AbstractCegarLoop]: Abstraction has 199898 states and 219377 transitions.
[2023-04-01 20:57:51,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 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 20:57:51,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 199898 states and 219377 transitions.
[2023-04-01 20:57:51,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2399
[2023-04-01 20:57:51,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 20:57:51,535 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-04-01 20:57:51,542 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-04-01 20:57:51,736 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:51,736 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 20:57:51,737 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 20:57:51,737 INFO  L85        PathProgramCache]: Analyzing trace with hash -1055705737, now seen corresponding path program 1 times
[2023-04-01 20:57:51,737 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-04-01 20:57:51,737 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198098394]
[2023-04-01 20:57:51,737 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:51,737 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 20:57:52,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,080 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-04-01 20:57:58,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,098 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-04-01 20:57:58,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,122 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2023-04-01 20:57:58,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,130 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2023-04-01 20:57:58,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,168 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235
[2023-04-01 20:57:58,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,380 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2023-04-01 20:57:58,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,471 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2023-04-01 20:57:58,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 20:57:58,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 1057 backedges. 682 proven. 18 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked.
[2023-04-01 20:57:58,486 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-04-01 20:57:58,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198098394]
[2023-04-01 20:57:58,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198098394] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 20:57:58,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608735222]
[2023-04-01 20:57:58,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 20:57:58,487 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 20:57:58,487 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 20:57:58,489 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-01 20:57:58,496 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process