/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-02 23:34:55,798 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-02 23:34:55,799 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-02 23:34:55,821 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-02 23:34:55,822 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-02 23:34:55,823 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-02 23:34:55,824 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-02 23:34:55,825 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-02 23:34:55,826 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-02 23:34:55,827 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-02 23:34:55,828 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-02 23:34:55,829 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-02 23:34:55,829 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-02 23:34:55,830 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-02 23:34:55,831 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-02 23:34:55,832 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-02 23:34:55,832 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-02 23:34:55,833 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-02 23:34:55,834 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-02 23:34:55,836 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-02 23:34:55,837 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-02 23:34:55,838 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-02 23:34:55,838 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-02 23:34:55,839 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-02 23:34:55,842 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-02 23:34:55,843 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-02 23:34:55,843 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-02 23:34:55,843 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-02 23:34:55,844 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-02 23:34:55,845 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-02 23:34:55,845 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-02 23:34:55,845 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-02 23:34:55,846 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-02 23:34:55,847 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-02 23:34:55,847 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-02 23:34:55,848 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-02 23:34:55,848 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-02 23:34:55,849 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-02 23:34:55,849 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-02 23:34:55,850 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-02 23:34:55,851 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-04-02 23:34:55,869 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-02 23:34:55,869 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-02 23:34:55,870 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-02 23:34:55,870 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-02 23:34:55,870 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-02 23:34:55,871 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-02 23:34:55,871 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-02 23:34:55,871 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-02 23:34:55,871 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-02 23:34:55,871 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-02 23:34:55,871 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-02 23:34:55,872 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-02 23:34:55,872 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-02 23:34:55,872 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-02 23:34:55,872 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-02 23:34:55,872 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-02 23:34:55,873 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-02 23:34:55,873 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-02 23:34:55,873 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-02 23:34:55,873 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-02 23:34:55,873 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-02 23:34:55,873 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-02 23:34:55,874 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-02 23:34:55,875 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 23:34:55,875 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-02 23:34:55,875 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-02 23:34:55,876 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-02 23:34:55,876 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-02 23:34:55,876 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-02 23:34:55,876 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-02 23:34:56,065 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-02 23:34:56,090 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-02 23:34:56,092 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-02 23:34:56,093 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-02 23:34:56,094 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-02 23:34:56,095 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c
[2023-04-02 23:34:57,221 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-02 23:34:57,514 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-02 23:34:57,515 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c
[2023-04-02 23:34:57,537 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30694a46c/0931db0462dd43a284967c88d72b2f10/FLAG893b1e185
[2023-04-02 23:34:57,552 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30694a46c/0931db0462dd43a284967c88d72b2f10
[2023-04-02 23:34:57,554 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-02 23:34:57,557 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-02 23:34:57,562 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-02 23:34:57,562 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-02 23:34:57,565 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-02 23:34:57,566 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:34:57" (1/1) ...
[2023-04-02 23:34:57,567 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4065d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:57, skipping insertion in model container
[2023-04-02 23:34:57,568 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:34:57" (1/1) ...
[2023-04-02 23:34:57,574 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-02 23:34:57,635 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-02 23:34:57,932 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/product-lines/elevator_spec13_product29.cil.c[54440,54453]
[2023-04-02 23:34:58,041 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 23:34:58,052 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-02 23:34:58,111 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/product-lines/elevator_spec13_product29.cil.c[54440,54453]
[2023-04-02 23:34:58,130 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 23:34:58,152 INFO  L208         MainTranslator]: Completed translation
[2023-04-02 23:34:58,152 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58 WrapperNode
[2023-04-02 23:34:58,153 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-02 23:34:58,153 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-02 23:34:58,154 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-02 23:34:58,154 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-02 23:34:58,163 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,164 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,196 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,197 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,241 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,279 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,302 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,318 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,330 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-02 23:34:58,331 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-02 23:34:58,331 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-02 23:34:58,332 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-02 23:34:58,332 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (1/1) ...
[2023-04-02 23:34:58,344 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 23:34:58,353 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:34:58,370 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)
[2023-04-02 23:34:58,396 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
[2023-04-02 23:34:58,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-02 23:34:58,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-02 23:34:58,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2023-04-02 23:34:58,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-02 23:34:58,416 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2023-04-02 23:34:58,416 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2023-04-02 23:34:58,416 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2023-04-02 23:34:58,416 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2023-04-02 23:34:58,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2023-04-02 23:34:58,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2023-04-02 23:34:58,419 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2023-04-02 23:34:58,420 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2023-04-02 23:34:58,420 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2023-04-02 23:34:58,420 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2023-04-02 23:34:58,420 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2023-04-02 23:34:58,420 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2023-04-02 23:34:58,421 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2023-04-02 23:34:58,421 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2023-04-02 23:34:58,421 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1
[2023-04-02 23:34:58,422 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2
[2023-04-02 23:34:58,422 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2023-04-02 23:34:58,422 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2023-04-02 23:34:58,422 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2023-04-02 23:34:58,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2023-04-02 23:34:58,424 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2023-04-02 23:34:58,424 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2023-04-02 23:34:58,424 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2023-04-02 23:34:58,424 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2023-04-02 23:34:58,425 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2023-04-02 23:34:58,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2023-04-02 23:34:58,427 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2023-04-02 23:34:58,427 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2023-04-02 23:34:58,427 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2023-04-02 23:34:58,427 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-02 23:34:58,427 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-02 23:34:58,427 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-02 23:34:58,428 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-02 23:34:58,428 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-02 23:34:58,428 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2023-04-02 23:34:58,429 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2023-04-02 23:34:58,429 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2023-04-02 23:34:58,429 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2023-04-02 23:34:58,429 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2023-04-02 23:34:58,430 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2023-04-02 23:34:58,431 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2023-04-02 23:34:58,432 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2023-04-02 23:34:58,432 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2023-04-02 23:34:58,432 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2023-04-02 23:34:58,432 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2023-04-02 23:34:58,432 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2023-04-02 23:34:58,433 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2023-04-02 23:34:58,434 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2023-04-02 23:34:58,434 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2023-04-02 23:34:58,434 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty
[2023-04-02 23:34:58,434 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2023-04-02 23:34:58,435 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2023-04-02 23:34:58,437 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2023-04-02 23:34:58,437 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2023-04-02 23:34:58,442 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2023-04-02 23:34:58,442 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2023-04-02 23:34:58,442 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1
[2023-04-02 23:34:58,442 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2
[2023-04-02 23:34:58,442 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2023-04-02 23:34:58,443 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2023-04-02 23:34:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2023-04-02 23:34:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2023-04-02 23:34:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2023-04-02 23:34:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2023-04-02 23:34:58,468 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2023-04-02 23:34:58,469 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2023-04-02 23:34:58,470 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2023-04-02 23:34:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2023-04-02 23:34:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-02 23:34:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-02 23:34:58,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-02 23:34:58,740 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-02 23:34:58,742 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-02 23:34:59,934 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-02 23:35:00,716 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-02 23:35:00,716 INFO  L302             CfgBuilder]: Removed 10 assume(true) statements.
[2023-04-02 23:35:00,721 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:35:00 BoogieIcfgContainer
[2023-04-02 23:35:00,721 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-02 23:35:00,724 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-02 23:35:00,724 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-02 23:35:00,727 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-02 23:35:00,727 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:34:57" (1/3) ...
[2023-04-02 23:35:00,727 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220b0fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:35:00, skipping insertion in model container
[2023-04-02 23:35:00,727 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:34:58" (2/3) ...
[2023-04-02 23:35:00,728 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220b0fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:35:00, skipping insertion in model container
[2023-04-02 23:35:00,728 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:35:00" (3/3) ...
[2023-04-02 23:35:00,729 INFO  L112   eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c
[2023-04-02 23:35:00,746 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-02 23:35:00,746 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-02 23:35:00,817 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-02 23:35:00,824 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=FINITE_AUTOMATA, 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;@5deb1cfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-02 23:35:00,825 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-02 23:35:00,833 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 594 states, 356 states have (on average 1.5084269662921348) internal successors, (537), 380 states have internal predecessors, (537), 174 states have call successors, (174), 52 states have call predecessors, (174), 52 states have return successors, (174), 168 states have call predecessors, (174), 174 states have call successors, (174)
[2023-04-02 23:35:00,856 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2023-04-02 23:35:00,856 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:00,857 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:00,858 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:00,861 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:00,862 INFO  L85        PathProgramCache]: Analyzing trace with hash -491796243, now seen corresponding path program 1 times
[2023-04-02 23:35:00,870 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:00,871 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919272493]
[2023-04-02 23:35:00,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:00,871 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:01,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:01,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-04-02 23:35:01,463 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:01,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919272493]
[2023-04-02 23:35:01,464 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919272493] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:01,464 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257437027]
[2023-04-02 23:35:01,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:01,464 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:01,465 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:01,471 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)
[2023-04-02 23:35:01,473 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-02 23:35:02,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:02,064 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-04-02 23:35:02,078 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:02,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-04-02 23:35:02,120 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:02,121 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257437027] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:02,121 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:02,121 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2023-04-02 23:35:02,125 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070742805]
[2023-04-02 23:35:02,125 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:02,131 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-04-02 23:35:02,131 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:02,155 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-04-02 23:35:02,156 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-04-02 23:35:02,159 INFO  L87              Difference]: Start difference. First operand  has 594 states, 356 states have (on average 1.5084269662921348) internal successors, (537), 380 states have internal predecessors, (537), 174 states have call successors, (174), 52 states have call predecessors, (174), 52 states have return successors, (174), 168 states have call predecessors, (174), 174 states have call successors, (174) Second operand  has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-04-02 23:35:02,340 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:02,340 INFO  L93              Difference]: Finished difference Result 938 states and 1428 transitions.
[2023-04-02 23:35:02,341 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-04-02 23:35:02,342 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 127
[2023-04-02 23:35:02,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:02,365 INFO  L225             Difference]: With dead ends: 938
[2023-04-02 23:35:02,366 INFO  L226             Difference]: Without dead ends: 477
[2023-04-02 23:35:02,374 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-04-02 23:35:02,379 INFO  L413           NwaCegarLoop]: 685 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:02,381 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 685 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-02 23:35:02,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 477 states.
[2023-04-02 23:35:02,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477.
[2023-04-02 23:35:02,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 477 states, 306 states have (on average 1.522875816993464) internal successors, (466), 322 states have internal predecessors, (466), 125 states have call successors, (125), 50 states have call predecessors, (125), 45 states have return successors, (119), 116 states have call predecessors, (119), 119 states have call successors, (119)
[2023-04-02 23:35:02,471 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 710 transitions.
[2023-04-02 23:35:02,473 INFO  L78                 Accepts]: Start accepts. Automaton has 477 states and 710 transitions. Word has length 127
[2023-04-02 23:35:02,474 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:02,474 INFO  L495      AbstractCegarLoop]: Abstraction has 477 states and 710 transitions.
[2023-04-02 23:35:02,474 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-04-02 23:35:02,475 INFO  L276                IsEmpty]: Start isEmpty. Operand 477 states and 710 transitions.
[2023-04-02 23:35:02,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2023-04-02 23:35:02,482 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:02,482 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:02,493 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-04-02 23:35:02,692 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2023-04-02 23:35:02,692 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:02,693 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:02,693 INFO  L85        PathProgramCache]: Analyzing trace with hash -1869579283, now seen corresponding path program 1 times
[2023-04-02 23:35:02,693 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:02,694 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087919725]
[2023-04-02 23:35:02,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:02,694 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:02,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:03,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:03,570 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:03,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087919725]
[2023-04-02 23:35:03,577 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087919725] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:03,577 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:03,577 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-02 23:35:03,577 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263888597]
[2023-04-02 23:35:03,578 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:03,580 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-02 23:35:03,580 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:03,580 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-02 23:35:03,581 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:03,581 INFO  L87              Difference]: Start difference. First operand 477 states and 710 transitions. Second operand  has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24)
[2023-04-02 23:35:04,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:04,125 INFO  L93              Difference]: Finished difference Result 1366 states and 2070 transitions.
[2023-04-02 23:35:04,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-04-02 23:35:04,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 127
[2023-04-02 23:35:04,126 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:04,135 INFO  L225             Difference]: With dead ends: 1366
[2023-04-02 23:35:04,136 INFO  L226             Difference]: Without dead ends: 926
[2023-04-02 23:35:04,138 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-04-02 23:35:04,140 INFO  L413           NwaCegarLoop]: 829 mSDtfsCounter, 1071 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:04,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 4557 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-02 23:35:04,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 926 states.
[2023-04-02 23:35:04,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 910.
[2023-04-02 23:35:04,204 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 910 states, 597 states have (on average 1.5343383584589614) internal successors, (916), 624 states have internal predecessors, (916), 228 states have call successors, (228), 87 states have call predecessors, (228), 84 states have return successors, (231), 222 states have call predecessors, (231), 221 states have call successors, (231)
[2023-04-02 23:35:04,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1375 transitions.
[2023-04-02 23:35:04,211 INFO  L78                 Accepts]: Start accepts. Automaton has 910 states and 1375 transitions. Word has length 127
[2023-04-02 23:35:04,212 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:04,212 INFO  L495      AbstractCegarLoop]: Abstraction has 910 states and 1375 transitions.
[2023-04-02 23:35:04,212 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24)
[2023-04-02 23:35:04,212 INFO  L276                IsEmpty]: Start isEmpty. Operand 910 states and 1375 transitions.
[2023-04-02 23:35:04,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2023-04-02 23:35:04,221 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:04,221 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:04,221 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-02 23:35:04,221 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:04,222 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:04,222 INFO  L85        PathProgramCache]: Analyzing trace with hash 96637701, now seen corresponding path program 1 times
[2023-04-02 23:35:04,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:04,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942054807]
[2023-04-02 23:35:04,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:04,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:04,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:04,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:04,698 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:04,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942054807]
[2023-04-02 23:35:04,698 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942054807] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:04,699 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:04,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-02 23:35:04,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946962649]
[2023-04-02 23:35:04,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:04,699 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-02 23:35:04,700 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:04,700 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-02 23:35:04,700 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:04,700 INFO  L87              Difference]: Start difference. First operand 910 states and 1375 transitions. Second operand  has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:04,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:04,905 INFO  L93              Difference]: Finished difference Result 1374 states and 2094 transitions.
[2023-04-02 23:35:04,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-02 23:35:04,906 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 131
[2023-04-02 23:35:04,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:04,912 INFO  L225             Difference]: With dead ends: 1374
[2023-04-02 23:35:04,912 INFO  L226             Difference]: Without dead ends: 932
[2023-04-02 23:35:04,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:04,915 INFO  L413           NwaCegarLoop]: 679 mSDtfsCounter, 7 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:04,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4032 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-02 23:35:04,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 932 states.
[2023-04-02 23:35:04,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 924.
[2023-04-02 23:35:04,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 924 states, 607 states have (on average 1.5255354200988467) internal successors, (926), 634 states have internal predecessors, (926), 228 states have call successors, (228), 87 states have call predecessors, (228), 88 states have return successors, (241), 226 states have call predecessors, (241), 221 states have call successors, (241)
[2023-04-02 23:35:04,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1395 transitions.
[2023-04-02 23:35:04,961 INFO  L78                 Accepts]: Start accepts. Automaton has 924 states and 1395 transitions. Word has length 131
[2023-04-02 23:35:04,962 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:04,962 INFO  L495      AbstractCegarLoop]: Abstraction has 924 states and 1395 transitions.
[2023-04-02 23:35:04,962 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:04,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 924 states and 1395 transitions.
[2023-04-02 23:35:04,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2023-04-02 23:35:04,981 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:04,981 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:04,981 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-02 23:35:04,982 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:04,982 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:04,983 INFO  L85        PathProgramCache]: Analyzing trace with hash -1797235503, now seen corresponding path program 1 times
[2023-04-02 23:35:04,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:04,983 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155357563]
[2023-04-02 23:35:04,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:04,983 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:05,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:05,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:05,330 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:05,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155357563]
[2023-04-02 23:35:05,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155357563] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:05,330 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:05,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-02 23:35:05,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527794855]
[2023-04-02 23:35:05,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:05,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-02 23:35:05,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:05,331 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-02 23:35:05,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:05,332 INFO  L87              Difference]: Start difference. First operand 924 states and 1395 transitions. Second operand  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:05,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:05,538 INFO  L93              Difference]: Finished difference Result 1391 states and 2116 transitions.
[2023-04-02 23:35:05,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-02 23:35:05,538 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 132
[2023-04-02 23:35:05,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:05,544 INFO  L225             Difference]: With dead ends: 1391
[2023-04-02 23:35:05,544 INFO  L226             Difference]: Without dead ends: 942
[2023-04-02 23:35:05,546 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:05,547 INFO  L413           NwaCegarLoop]: 682 mSDtfsCounter, 6 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:05,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4046 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-02 23:35:05,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 942 states.
[2023-04-02 23:35:05,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 926.
[2023-04-02 23:35:05,577 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 926 states, 609 states have (on average 1.5238095238095237) internal successors, (928), 634 states have internal predecessors, (928), 228 states have call successors, (228), 87 states have call predecessors, (228), 88 states have return successors, (241), 228 states have call predecessors, (241), 221 states have call successors, (241)
[2023-04-02 23:35:05,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1397 transitions.
[2023-04-02 23:35:05,584 INFO  L78                 Accepts]: Start accepts. Automaton has 926 states and 1397 transitions. Word has length 132
[2023-04-02 23:35:05,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:05,585 INFO  L495      AbstractCegarLoop]: Abstraction has 926 states and 1397 transitions.
[2023-04-02 23:35:05,585 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:05,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 926 states and 1397 transitions.
[2023-04-02 23:35:05,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 133
[2023-04-02 23:35:05,588 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:05,588 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:05,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-02 23:35:05,589 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:05,589 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:05,589 INFO  L85        PathProgramCache]: Analyzing trace with hash 1915701937, now seen corresponding path program 1 times
[2023-04-02 23:35:05,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:05,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707086846]
[2023-04-02 23:35:05,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:05,589 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:05,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:05,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:05,940 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:05,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707086846]
[2023-04-02 23:35:05,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707086846] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:05,940 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:05,940 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-04-02 23:35:05,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752690623]
[2023-04-02 23:35:05,940 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:05,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-02 23:35:05,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:05,941 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-02 23:35:05,941 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:05,942 INFO  L87              Difference]: Start difference. First operand 926 states and 1397 transitions. Second operand  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:06,143 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:06,143 INFO  L93              Difference]: Finished difference Result 1394 states and 2119 transitions.
[2023-04-02 23:35:06,144 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-02 23:35:06,144 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 132
[2023-04-02 23:35:06,144 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:06,149 INFO  L225             Difference]: With dead ends: 1394
[2023-04-02 23:35:06,149 INFO  L226             Difference]: Without dead ends: 944
[2023-04-02 23:35:06,151 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:06,152 INFO  L413           NwaCegarLoop]: 682 mSDtfsCounter, 6 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:06,153 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4046 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-02 23:35:06,154 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 944 states.
[2023-04-02 23:35:06,180 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 928.
[2023-04-02 23:35:06,182 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 928 states, 611 states have (on average 1.5220949263502455) internal successors, (930), 634 states have internal predecessors, (930), 228 states have call successors, (228), 87 states have call predecessors, (228), 88 states have return successors, (241), 230 states have call predecessors, (241), 221 states have call successors, (241)
[2023-04-02 23:35:06,188 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1399 transitions.
[2023-04-02 23:35:06,188 INFO  L78                 Accepts]: Start accepts. Automaton has 928 states and 1399 transitions. Word has length 132
[2023-04-02 23:35:06,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:06,189 INFO  L495      AbstractCegarLoop]: Abstraction has 928 states and 1399 transitions.
[2023-04-02 23:35:06,189 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25)
[2023-04-02 23:35:06,189 INFO  L276                IsEmpty]: Start isEmpty. Operand 928 states and 1399 transitions.
[2023-04-02 23:35:06,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-04-02 23:35:06,192 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:06,192 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:06,193 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-04-02 23:35:06,193 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:06,193 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:06,193 INFO  L85        PathProgramCache]: Analyzing trace with hash -12744163, now seen corresponding path program 1 times
[2023-04-02 23:35:06,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:06,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285970590]
[2023-04-02 23:35:06,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:06,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:06,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:06,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:06,744 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:06,744 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285970590]
[2023-04-02 23:35:06,744 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285970590] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:06,744 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:06,744 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-04-02 23:35:06,745 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302906433]
[2023-04-02 23:35:06,745 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:06,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 23:35:06,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:06,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 23:35:06,746 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-04-02 23:35:06,746 INFO  L87              Difference]: Start difference. First operand 928 states and 1399 transitions. Second operand  has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25)
[2023-04-02 23:35:07,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:07,735 INFO  L93              Difference]: Finished difference Result 1957 states and 2978 transitions.
[2023-04-02 23:35:07,736 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-04-02 23:35:07,736 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 135
[2023-04-02 23:35:07,736 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:07,749 INFO  L225             Difference]: With dead ends: 1957
[2023-04-02 23:35:07,750 INFO  L226             Difference]: Without dead ends: 1381
[2023-04-02 23:35:07,753 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-04-02 23:35:07,755 INFO  L413           NwaCegarLoop]: 1217 mSDtfsCounter, 1263 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:07,755 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 2160 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-04-02 23:35:07,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1381 states.
[2023-04-02 23:35:07,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1362.
[2023-04-02 23:35:07,804 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1362 states, 890 states have (on average 1.4775280898876404) internal successors, (1315), 924 states have internal predecessors, (1315), 334 states have call successors, (334), 132 states have call predecessors, (334), 137 states have return successors, (373), 341 states have call predecessors, (373), 326 states have call successors, (373)
[2023-04-02 23:35:07,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2022 transitions.
[2023-04-02 23:35:07,814 INFO  L78                 Accepts]: Start accepts. Automaton has 1362 states and 2022 transitions. Word has length 135
[2023-04-02 23:35:07,814 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:07,814 INFO  L495      AbstractCegarLoop]: Abstraction has 1362 states and 2022 transitions.
[2023-04-02 23:35:07,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25)
[2023-04-02 23:35:07,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 1362 states and 2022 transitions.
[2023-04-02 23:35:07,817 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2023-04-02 23:35:07,820 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:07,820 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:07,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-04-02 23:35:07,821 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:07,821 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:07,821 INFO  L85        PathProgramCache]: Analyzing trace with hash 1905843825, now seen corresponding path program 1 times
[2023-04-02 23:35:07,821 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:07,821 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970833123]
[2023-04-02 23:35:07,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:07,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:07,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:08,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:08,284 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:08,284 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970833123]
[2023-04-02 23:35:08,284 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970833123] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:08,284 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:08,284 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-02 23:35:08,284 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086034791]
[2023-04-02 23:35:08,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:08,287 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-02 23:35:08,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:08,287 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-02 23:35:08,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-04-02 23:35:08,288 INFO  L87              Difference]: Start difference. First operand 1362 states and 2022 transitions. Second operand  has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25)
[2023-04-02 23:35:08,668 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:08,668 INFO  L93              Difference]: Finished difference Result 2536 states and 3834 transitions.
[2023-04-02 23:35:08,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-04-02 23:35:08,669 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) Word has length 139
[2023-04-02 23:35:08,669 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:08,678 INFO  L225             Difference]: With dead ends: 2536
[2023-04-02 23:35:08,678 INFO  L226             Difference]: Without dead ends: 1510
[2023-04-02 23:35:08,684 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2023-04-02 23:35:08,685 INFO  L413           NwaCegarLoop]: 709 mSDtfsCounter, 230 mSDsluCounter, 4672 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:08,685 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 5381 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-02 23:35:08,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1510 states.
[2023-04-02 23:35:08,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1510.
[2023-04-02 23:35:08,743 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1510 states, 1025 states have (on average 1.4829268292682927) internal successors, (1520), 1064 states have internal predecessors, (1520), 338 states have call successors, (338), 136 states have call predecessors, (338), 146 states have return successors, (377), 345 states have call predecessors, (377), 330 states have call successors, (377)
[2023-04-02 23:35:08,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2235 transitions.
[2023-04-02 23:35:08,752 INFO  L78                 Accepts]: Start accepts. Automaton has 1510 states and 2235 transitions. Word has length 139
[2023-04-02 23:35:08,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:08,752 INFO  L495      AbstractCegarLoop]: Abstraction has 1510 states and 2235 transitions.
[2023-04-02 23:35:08,752 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25)
[2023-04-02 23:35:08,753 INFO  L276                IsEmpty]: Start isEmpty. Operand 1510 states and 2235 transitions.
[2023-04-02 23:35:08,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2023-04-02 23:35:08,755 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:08,755 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:08,755 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-04-02 23:35:08,756 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:08,756 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:08,756 INFO  L85        PathProgramCache]: Analyzing trace with hash -1363868446, now seen corresponding path program 1 times
[2023-04-02 23:35:08,756 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:08,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838720319]
[2023-04-02 23:35:08,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:08,757 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:08,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:09,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:09,257 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:09,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838720319]
[2023-04-02 23:35:09,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838720319] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:09,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 23:35:09,258 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-02 23:35:09,258 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297670769]
[2023-04-02 23:35:09,258 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:09,259 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:09,259 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:09,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:09,260 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-02 23:35:09,260 INFO  L87              Difference]: Start difference. First operand 1510 states and 2235 transitions. Second operand  has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26)
[2023-04-02 23:35:09,813 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:09,814 INFO  L93              Difference]: Finished difference Result 2570 states and 3832 transitions.
[2023-04-02 23:35:09,814 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 23:35:09,814 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 140
[2023-04-02 23:35:09,815 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:09,823 INFO  L225             Difference]: With dead ends: 2570
[2023-04-02 23:35:09,823 INFO  L226             Difference]: Without dead ends: 1526
[2023-04-02 23:35:09,828 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-04-02 23:35:09,833 INFO  L413           NwaCegarLoop]: 858 mSDtfsCounter, 588 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:09,834 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 2974 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-02 23:35:09,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1526 states.
[2023-04-02 23:35:09,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1515.
[2023-04-02 23:35:09,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1515 states, 1028 states have (on average 1.4815175097276265) internal successors, (1523), 1068 states have internal predecessors, (1523), 339 states have call successors, (339), 137 states have call predecessors, (339), 147 states have return successors, (380), 345 states have call predecessors, (380), 331 states have call successors, (380)
[2023-04-02 23:35:09,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2242 transitions.
[2023-04-02 23:35:09,911 INFO  L78                 Accepts]: Start accepts. Automaton has 1515 states and 2242 transitions. Word has length 140
[2023-04-02 23:35:09,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:09,912 INFO  L495      AbstractCegarLoop]: Abstraction has 1515 states and 2242 transitions.
[2023-04-02 23:35:09,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26)
[2023-04-02 23:35:09,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 1515 states and 2242 transitions.
[2023-04-02 23:35:09,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2023-04-02 23:35:09,916 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:09,916 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:09,916 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-04-02 23:35:09,916 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:09,916 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:09,917 INFO  L85        PathProgramCache]: Analyzing trace with hash -1640485542, now seen corresponding path program 1 times
[2023-04-02 23:35:09,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:09,917 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431254893]
[2023-04-02 23:35:09,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:09,917 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:09,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:10,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-04-02 23:35:10,121 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:10,121 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431254893]
[2023-04-02 23:35:10,121 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431254893] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:10,121 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638022652]
[2023-04-02 23:35:10,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:10,122 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:10,122 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:10,123 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)
[2023-04-02 23:35:10,152 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-04-02 23:35:10,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:10,636 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-04-02 23:35:10,643 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:10,671 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:10,672 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:10,672 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [638022652] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:10,672 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:10,672 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4
[2023-04-02 23:35:10,672 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448058778]
[2023-04-02 23:35:10,673 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:10,673 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 23:35:10,673 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:10,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 23:35:10,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-04-02 23:35:10,674 INFO  L87              Difference]: Start difference. First operand 1515 states and 2242 transitions. Second operand  has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:10,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:10,884 INFO  L93              Difference]: Finished difference Result 3011 states and 4501 transitions.
[2023-04-02 23:35:10,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-04-02 23:35:10,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 144
[2023-04-02 23:35:10,885 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:10,900 INFO  L225             Difference]: With dead ends: 3011
[2023-04-02 23:35:10,900 INFO  L226             Difference]: Without dead ends: 1533
[2023-04-02 23:35:10,908 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-04-02 23:35:10,910 INFO  L413           NwaCegarLoop]: 665 mSDtfsCounter, 85 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:10,910 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1908 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-02 23:35:10,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1533 states.
[2023-04-02 23:35:10,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1533.
[2023-04-02 23:35:10,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1533 states, 1043 states have (on average 1.4774688398849474) internal successors, (1541), 1083 states have internal predecessors, (1541), 339 states have call successors, (339), 140 states have call predecessors, (339), 150 states have return successors, (380), 345 states have call predecessors, (380), 331 states have call successors, (380)
[2023-04-02 23:35:10,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2260 transitions.
[2023-04-02 23:35:10,983 INFO  L78                 Accepts]: Start accepts. Automaton has 1533 states and 2260 transitions. Word has length 144
[2023-04-02 23:35:10,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:10,983 INFO  L495      AbstractCegarLoop]: Abstraction has 1533 states and 2260 transitions.
[2023-04-02 23:35:10,984 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:10,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 1533 states and 2260 transitions.
[2023-04-02 23:35:10,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2023-04-02 23:35:10,987 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:10,987 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:10,998 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:11,196 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,SelfDestructingSolverStorable8
[2023-04-02 23:35:11,197 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:11,197 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:11,197 INFO  L85        PathProgramCache]: Analyzing trace with hash -773324847, now seen corresponding path program 1 times
[2023-04-02 23:35:11,197 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:11,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140402271]
[2023-04-02 23:35:11,198 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:11,198 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:11,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:11,438 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:11,439 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:11,439 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140402271]
[2023-04-02 23:35:11,439 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140402271] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:11,439 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59339225]
[2023-04-02 23:35:11,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:11,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:11,439 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:11,440 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)
[2023-04-02 23:35:11,443 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-04-02 23:35:11,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:11,958 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-04-02 23:35:11,964 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:12,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-04-02 23:35:12,009 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:12,009 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [59339225] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:12,009 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:12,009 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7
[2023-04-02 23:35:12,009 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897328817]
[2023-04-02 23:35:12,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:12,010 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 23:35:12,010 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:12,010 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 23:35:12,011 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:12,011 INFO  L87              Difference]: Start difference. First operand 1533 states and 2260 transitions. Second operand  has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:12,187 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:12,187 INFO  L93              Difference]: Finished difference Result 3038 states and 4516 transitions.
[2023-04-02 23:35:12,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-04-02 23:35:12,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 146
[2023-04-02 23:35:12,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:12,198 INFO  L225             Difference]: With dead ends: 3038
[2023-04-02 23:35:12,198 INFO  L226             Difference]: Without dead ends: 1530
[2023-04-02 23:35:12,206 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:12,206 INFO  L413           NwaCegarLoop]: 664 mSDtfsCounter, 91 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:12,206 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1904 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-02 23:35:12,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1530 states.
[2023-04-02 23:35:12,260 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1530.
[2023-04-02 23:35:12,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1530 states, 1040 states have (on average 1.4701923076923078) internal successors, (1529), 1080 states have internal predecessors, (1529), 339 states have call successors, (339), 140 states have call predecessors, (339), 150 states have return successors, (380), 345 states have call predecessors, (380), 331 states have call successors, (380)
[2023-04-02 23:35:12,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2248 transitions.
[2023-04-02 23:35:12,272 INFO  L78                 Accepts]: Start accepts. Automaton has 1530 states and 2248 transitions. Word has length 146
[2023-04-02 23:35:12,272 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:12,272 INFO  L495      AbstractCegarLoop]: Abstraction has 1530 states and 2248 transitions.
[2023-04-02 23:35:12,272 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:12,272 INFO  L276                IsEmpty]: Start isEmpty. Operand 1530 states and 2248 transitions.
[2023-04-02 23:35:12,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2023-04-02 23:35:12,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:12,275 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 23:35:12,285 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:12,484 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:12,485 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:12,485 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:12,485 INFO  L85        PathProgramCache]: Analyzing trace with hash -977963075, now seen corresponding path program 1 times
[2023-04-02 23:35:12,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:12,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067497338]
[2023-04-02 23:35:12,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:12,485 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:12,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:12,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-04-02 23:35:12,714 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:12,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067497338]
[2023-04-02 23:35:12,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067497338] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:12,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356313954]
[2023-04-02 23:35:12,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:12,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:12,715 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:12,716 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)
[2023-04-02 23:35:12,719 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-04-02 23:35:13,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:13,209 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 23:35:13,216 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:13,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:13,280 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:13,280 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [356313954] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:13,280 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:13,280 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2023-04-02 23:35:13,280 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042570953]
[2023-04-02 23:35:13,280 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:13,281 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:13,281 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:13,281 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:13,281 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:13,282 INFO  L87              Difference]: Start difference. First operand 1530 states and 2248 transitions. Second operand  has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:14,235 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:14,235 INFO  L93              Difference]: Finished difference Result 3902 states and 5887 transitions.
[2023-04-02 23:35:14,235 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 23:35:14,236 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 148
[2023-04-02 23:35:14,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:14,252 INFO  L225             Difference]: With dead ends: 3902
[2023-04-02 23:35:14,252 INFO  L226             Difference]: Without dead ends: 2409
[2023-04-02 23:35:14,262 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2023-04-02 23:35:14,263 INFO  L413           NwaCegarLoop]: 710 mSDtfsCounter, 674 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:14,263 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2119 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-04-02 23:35:14,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2409 states.
[2023-04-02 23:35:14,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2376.
[2023-04-02 23:35:14,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2376 states, 1613 states have (on average 1.448853068815871) internal successors, (2337), 1678 states have internal predecessors, (2337), 529 states have call successors, (529), 218 states have call predecessors, (529), 233 states have return successors, (646), 539 states have call predecessors, (646), 519 states have call successors, (646)
[2023-04-02 23:35:14,383 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3512 transitions.
[2023-04-02 23:35:14,383 INFO  L78                 Accepts]: Start accepts. Automaton has 2376 states and 3512 transitions. Word has length 148
[2023-04-02 23:35:14,384 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:14,384 INFO  L495      AbstractCegarLoop]: Abstraction has 2376 states and 3512 transitions.
[2023-04-02 23:35:14,384 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:14,384 INFO  L276                IsEmpty]: Start isEmpty. Operand 2376 states and 3512 transitions.
[2023-04-02 23:35:14,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2023-04-02 23:35:14,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:14,387 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:14,401 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:14,596 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:14,596 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:14,597 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:14,597 INFO  L85        PathProgramCache]: Analyzing trace with hash -203945100, now seen corresponding path program 1 times
[2023-04-02 23:35:14,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:14,597 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637583246]
[2023-04-02 23:35:14,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:14,597 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:14,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:14,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:14,853 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:14,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637583246]
[2023-04-02 23:35:14,853 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637583246] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:14,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053500913]
[2023-04-02 23:35:14,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:14,853 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:14,854 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:14,855 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)
[2023-04-02 23:35:14,857 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-04-02 23:35:15,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:15,358 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-04-02 23:35:15,363 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:15,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-04-02 23:35:15,390 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:15,390 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053500913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:15,390 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:15,390 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2023-04-02 23:35:15,392 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287218780]
[2023-04-02 23:35:15,392 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:15,393 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:15,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:15,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:15,394 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:15,394 INFO  L87              Difference]: Start difference. First operand 2376 states and 3512 transitions. Second operand  has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:15,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:15,633 INFO  L93              Difference]: Finished difference Result 4755 states and 7111 transitions.
[2023-04-02 23:35:15,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-04-02 23:35:15,634 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 148
[2023-04-02 23:35:15,634 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:15,648 INFO  L225             Difference]: With dead ends: 4755
[2023-04-02 23:35:15,648 INFO  L226             Difference]: Without dead ends: 2416
[2023-04-02 23:35:15,659 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:15,660 INFO  L413           NwaCegarLoop]: 676 mSDtfsCounter, 2 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:15,660 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2685 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-02 23:35:15,663 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2416 states.
[2023-04-02 23:35:15,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2396.
[2023-04-02 23:35:15,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2396 states, 1628 states have (on average 1.4447174447174447) internal successors, (2352), 1693 states have internal predecessors, (2352), 529 states have call successors, (529), 218 states have call predecessors, (529), 238 states have return successors, (656), 544 states have call predecessors, (656), 519 states have call successors, (656)
[2023-04-02 23:35:15,763 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3537 transitions.
[2023-04-02 23:35:15,764 INFO  L78                 Accepts]: Start accepts. Automaton has 2396 states and 3537 transitions. Word has length 148
[2023-04-02 23:35:15,764 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:15,764 INFO  L495      AbstractCegarLoop]: Abstraction has 2396 states and 3537 transitions.
[2023-04-02 23:35:15,764 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:15,765 INFO  L276                IsEmpty]: Start isEmpty. Operand 2396 states and 3537 transitions.
[2023-04-02 23:35:15,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2023-04-02 23:35:15,768 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:15,768 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 23:35:15,780 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:15,976 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-04-02 23:35:15,977 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:15,977 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:15,977 INFO  L85        PathProgramCache]: Analyzing trace with hash -1681994431, now seen corresponding path program 1 times
[2023-04-02 23:35:15,978 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:15,978 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687192160]
[2023-04-02 23:35:15,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:15,978 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:16,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:16,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-04-02 23:35:16,456 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:16,456 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687192160]
[2023-04-02 23:35:16,456 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687192160] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:16,456 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135839674]
[2023-04-02 23:35:16,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:16,456 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:16,456 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:16,457 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)
[2023-04-02 23:35:16,475 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-04-02 23:35:16,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:16,919 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-04-02 23:35:16,924 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:17,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-04-02 23:35:17,126 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:17,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135839674] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:17,126 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:17,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12
[2023-04-02 23:35:17,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62230740]
[2023-04-02 23:35:17,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:17,127 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-04-02 23:35:17,127 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:17,128 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-04-02 23:35:17,128 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2023-04-02 23:35:17,128 INFO  L87              Difference]: Start difference. First operand 2396 states and 3537 transitions. Second operand  has 7 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27)
[2023-04-02 23:35:17,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:17,961 INFO  L93              Difference]: Finished difference Result 5266 states and 7837 transitions.
[2023-04-02 23:35:17,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-04-02 23:35:17,962 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 149
[2023-04-02 23:35:17,962 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:17,980 INFO  L225             Difference]: With dead ends: 5266
[2023-04-02 23:35:17,980 INFO  L226             Difference]: Without dead ends: 2907
[2023-04-02 23:35:17,992 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-04-02 23:35:17,992 INFO  L413           NwaCegarLoop]: 887 mSDtfsCounter, 1276 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:17,993 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2881 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-02 23:35:17,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2907 states.
[2023-04-02 23:35:18,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2887.
[2023-04-02 23:35:18,109 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2887 states, 1980 states have (on average 1.433838383838384) internal successors, (2839), 2046 states have internal predecessors, (2839), 604 states have call successors, (604), 283 states have call predecessors, (604), 302 states have return successors, (862), 617 states have call predecessors, (862), 590 states have call successors, (862)
[2023-04-02 23:35:18,124 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4305 transitions.
[2023-04-02 23:35:18,126 INFO  L78                 Accepts]: Start accepts. Automaton has 2887 states and 4305 transitions. Word has length 149
[2023-04-02 23:35:18,126 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:18,126 INFO  L495      AbstractCegarLoop]: Abstraction has 2887 states and 4305 transitions.
[2023-04-02 23:35:18,127 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27)
[2023-04-02 23:35:18,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 2887 states and 4305 transitions.
[2023-04-02 23:35:18,130 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2023-04-02 23:35:18,130 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:18,130 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:18,145 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:18,344 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:18,344 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:18,345 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:18,345 INFO  L85        PathProgramCache]: Analyzing trace with hash -1984249961, now seen corresponding path program 1 times
[2023-04-02 23:35:18,345 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:18,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376258817]
[2023-04-02 23:35:18,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:18,345 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:18,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:18,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:18,761 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:18,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376258817]
[2023-04-02 23:35:18,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376258817] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:18,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739917616]
[2023-04-02 23:35:18,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:18,762 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:18,762 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:18,763 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:18,774 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-04-02 23:35:19,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:19,217 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 23:35:19,221 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:19,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-04-02 23:35:19,262 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:19,262 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [739917616] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:19,262 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:19,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6
[2023-04-02 23:35:19,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271803154]
[2023-04-02 23:35:19,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:19,263 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 23:35:19,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:19,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 23:35:19,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-04-02 23:35:19,264 INFO  L87              Difference]: Start difference. First operand 2887 states and 4305 transitions. Second operand  has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:19,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:19,546 INFO  L93              Difference]: Finished difference Result 5854 states and 8905 transitions.
[2023-04-02 23:35:19,546 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-04-02 23:35:19,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 150
[2023-04-02 23:35:19,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:19,564 INFO  L225             Difference]: With dead ends: 5854
[2023-04-02 23:35:19,564 INFO  L226             Difference]: Without dead ends: 3018
[2023-04-02 23:35:19,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-04-02 23:35:19,578 INFO  L413           NwaCegarLoop]: 662 mSDtfsCounter, 19 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:19,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1866 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-02 23:35:19,581 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3018 states.
[2023-04-02 23:35:19,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 2988.
[2023-04-02 23:35:19,701 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2988 states, 2081 states have (on average 1.4435367611725132) internal successors, (3004), 2147 states have internal predecessors, (3004), 604 states have call successors, (604), 283 states have call predecessors, (604), 302 states have return successors, (862), 617 states have call predecessors, (862), 590 states have call successors, (862)
[2023-04-02 23:35:19,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 4470 transitions.
[2023-04-02 23:35:19,716 INFO  L78                 Accepts]: Start accepts. Automaton has 2988 states and 4470 transitions. Word has length 150
[2023-04-02 23:35:19,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:19,716 INFO  L495      AbstractCegarLoop]: Abstraction has 2988 states and 4470 transitions.
[2023-04-02 23:35:19,717 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:19,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 2988 states and 4470 transitions.
[2023-04-02 23:35:19,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2023-04-02 23:35:19,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:19,720 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:19,734 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:19,934 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:19,935 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:19,935 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:19,935 INFO  L85        PathProgramCache]: Analyzing trace with hash 1747701869, now seen corresponding path program 1 times
[2023-04-02 23:35:19,935 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:19,935 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022438747]
[2023-04-02 23:35:19,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:19,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:19,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:20,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:20,363 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:20,363 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022438747]
[2023-04-02 23:35:20,363 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022438747] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:20,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493625803]
[2023-04-02 23:35:20,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:20,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:20,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:20,365 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:20,377 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-04-02 23:35:20,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:20,827 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 23:35:20,831 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:20,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:20,887 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:20,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [493625803] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:20,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:20,887 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7
[2023-04-02 23:35:20,887 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505274977]
[2023-04-02 23:35:20,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:20,888 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:20,888 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:20,888 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:20,889 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:20,889 INFO  L87              Difference]: Start difference. First operand 2988 states and 4470 transitions. Second operand  has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:21,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:21,776 INFO  L93              Difference]: Finished difference Result 7687 states and 12025 transitions.
[2023-04-02 23:35:21,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 23:35:21,776 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 152
[2023-04-02 23:35:21,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:21,810 INFO  L225             Difference]: With dead ends: 7687
[2023-04-02 23:35:21,810 INFO  L226             Difference]: Without dead ends: 5221
[2023-04-02 23:35:21,826 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:21,826 INFO  L413           NwaCegarLoop]: 789 mSDtfsCounter, 695 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:21,827 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 2145 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-02 23:35:21,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5221 states.
[2023-04-02 23:35:22,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 5043.
[2023-04-02 23:35:22,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5043 states, 3499 states have (on average 1.4435553015147184) internal successors, (5051), 3614 states have internal predecessors, (5051), 1030 states have call successors, (1030), 483 states have call predecessors, (1030), 513 states have return successors, (1721), 1053 states have call predecessors, (1721), 1008 states have call successors, (1721)
[2023-04-02 23:35:22,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 7802 transitions.
[2023-04-02 23:35:22,115 INFO  L78                 Accepts]: Start accepts. Automaton has 5043 states and 7802 transitions. Word has length 152
[2023-04-02 23:35:22,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:22,115 INFO  L495      AbstractCegarLoop]: Abstraction has 5043 states and 7802 transitions.
[2023-04-02 23:35:22,116 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:22,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 5043 states and 7802 transitions.
[2023-04-02 23:35:22,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2023-04-02 23:35:22,119 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:22,119 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:22,128 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:22,328 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-04-02 23:35:22,328 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:22,329 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:22,329 INFO  L85        PathProgramCache]: Analyzing trace with hash -517603241, now seen corresponding path program 1 times
[2023-04-02 23:35:22,329 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:22,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173592621]
[2023-04-02 23:35:22,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:22,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:22,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:22,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:22,499 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:22,499 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173592621]
[2023-04-02 23:35:22,499 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173592621] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:22,499 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780324361]
[2023-04-02 23:35:22,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:22,500 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:22,500 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:22,501 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:22,503 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-04-02 23:35:22,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:22,960 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-04-02 23:35:22,966 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:22,981 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-04-02 23:35:22,981 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:22,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780324361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:22,981 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:22,981 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4
[2023-04-02 23:35:22,981 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952665236]
[2023-04-02 23:35:22,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:22,982 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 23:35:22,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:22,982 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 23:35:22,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-04-02 23:35:22,983 INFO  L87              Difference]: Start difference. First operand 5043 states and 7802 transitions. Second operand  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:23,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:23,256 INFO  L93              Difference]: Finished difference Result 10155 states and 16163 transitions.
[2023-04-02 23:35:23,256 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-04-02 23:35:23,257 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 152
[2023-04-02 23:35:23,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:23,297 INFO  L225             Difference]: With dead ends: 10155
[2023-04-02 23:35:23,298 INFO  L226             Difference]: Without dead ends: 5163
[2023-04-02 23:35:23,323 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-04-02 23:35:23,326 INFO  L413           NwaCegarLoop]: 676 mSDtfsCounter, 5 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:23,326 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1335 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-02 23:35:23,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5163 states.
[2023-04-02 23:35:23,646 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5061.
[2023-04-02 23:35:23,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5061 states, 3517 states have (on average 1.4316178561273813) internal successors, (5035), 3632 states have internal predecessors, (5035), 1030 states have call successors, (1030), 483 states have call predecessors, (1030), 513 states have return successors, (1721), 1053 states have call predecessors, (1721), 1008 states have call successors, (1721)
[2023-04-02 23:35:23,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 7786 transitions.
[2023-04-02 23:35:23,676 INFO  L78                 Accepts]: Start accepts. Automaton has 5061 states and 7786 transitions. Word has length 152
[2023-04-02 23:35:23,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:23,677 INFO  L495      AbstractCegarLoop]: Abstraction has 5061 states and 7786 transitions.
[2023-04-02 23:35:23,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)
[2023-04-02 23:35:23,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 5061 states and 7786 transitions.
[2023-04-02 23:35:23,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2023-04-02 23:35:23,680 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:23,680 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:23,693 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:23,893 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-04-02 23:35:23,894 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:23,894 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:23,894 INFO  L85        PathProgramCache]: Analyzing trace with hash 1892162594, now seen corresponding path program 1 times
[2023-04-02 23:35:23,894 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:23,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076586126]
[2023-04-02 23:35:23,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:23,895 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:23,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:24,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:24,247 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:24,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076586126]
[2023-04-02 23:35:24,247 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076586126] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:24,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892773367]
[2023-04-02 23:35:24,248 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:24,248 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:24,248 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:24,249 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:24,272 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-04-02 23:35:24,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:24,669 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 23:35:24,686 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:24,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:24,733 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:24,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892773367] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:24,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:24,733 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7
[2023-04-02 23:35:24,733 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534004499]
[2023-04-02 23:35:24,733 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:24,735 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:24,735 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:24,736 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:24,736 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:24,736 INFO  L87              Difference]: Start difference. First operand 5061 states and 7786 transitions. Second operand  has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:25,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:25,680 INFO  L93              Difference]: Finished difference Result 11816 states and 18856 transitions.
[2023-04-02 23:35:25,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 23:35:25,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 153
[2023-04-02 23:35:25,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:25,721 INFO  L225             Difference]: With dead ends: 11816
[2023-04-02 23:35:25,722 INFO  L226             Difference]: Without dead ends: 7282
[2023-04-02 23:35:25,746 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:25,747 INFO  L413           NwaCegarLoop]: 792 mSDtfsCounter, 715 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:25,747 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 2146 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-02 23:35:25,754 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7282 states.
[2023-04-02 23:35:26,065 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7112.
[2023-04-02 23:35:26,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7112 states, 4931 states have (on average 1.4321638612857432) internal successors, (7062), 5095 states have internal predecessors, (7062), 1456 states have call successors, (1456), 683 states have call predecessors, (1456), 724 states have return successors, (2772), 1489 states have call predecessors, (2772), 1426 states have call successors, (2772)
[2023-04-02 23:35:26,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 11290 transitions.
[2023-04-02 23:35:26,179 INFO  L78                 Accepts]: Start accepts. Automaton has 7112 states and 11290 transitions. Word has length 153
[2023-04-02 23:35:26,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:26,180 INFO  L495      AbstractCegarLoop]: Abstraction has 7112 states and 11290 transitions.
[2023-04-02 23:35:26,180 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:26,180 INFO  L276                IsEmpty]: Start isEmpty. Operand 7112 states and 11290 transitions.
[2023-04-02 23:35:26,184 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2023-04-02 23:35:26,184 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:26,184 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:26,203 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:26,393 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-04-02 23:35:26,394 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:26,394 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:26,394 INFO  L85        PathProgramCache]: Analyzing trace with hash -1125215933, now seen corresponding path program 1 times
[2023-04-02 23:35:26,394 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:26,394 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999781463]
[2023-04-02 23:35:26,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:26,395 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:26,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:26,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:26,782 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:26,782 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999781463]
[2023-04-02 23:35:26,782 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999781463] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:26,782 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677049969]
[2023-04-02 23:35:26,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:26,782 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:26,782 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:26,783 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:26,786 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-04-02 23:35:27,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:27,195 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 23:35:27,199 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:27,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:27,241 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-02 23:35:27,241 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677049969] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 23:35:27,241 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-02 23:35:27,241 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7
[2023-04-02 23:35:27,241 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591602323]
[2023-04-02 23:35:27,241 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 23:35:27,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 23:35:27,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 23:35:27,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 23:35:27,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-04-02 23:35:27,242 INFO  L87              Difference]: Start difference. First operand 7112 states and 11290 transitions. Second operand  has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:28,300 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 23:35:28,300 INFO  L93              Difference]: Finished difference Result 15663 states and 25501 transitions.
[2023-04-02 23:35:28,300 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 23:35:28,300 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 154
[2023-04-02 23:35:28,301 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 23:35:28,342 INFO  L225             Difference]: With dead ends: 15663
[2023-04-02 23:35:28,342 INFO  L226             Difference]: Without dead ends: 9081
[2023-04-02 23:35:28,372 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-04-02 23:35:28,373 INFO  L413           NwaCegarLoop]: 745 mSDtfsCounter, 715 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-02 23:35:28,373 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 2188 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-02 23:35:28,382 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9081 states.
[2023-04-02 23:35:28,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 8762.
[2023-04-02 23:35:28,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8762 states, 6008 states have (on average 1.4320905459387483) internal successors, (8604), 6217 states have internal predecessors, (8604), 1848 states have call successors, (1848), 861 states have call predecessors, (1848), 905 states have return successors, (3723), 1887 states have call predecessors, (3723), 1812 states have call successors, (3723)
[2023-04-02 23:35:28,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8762 states to 8762 states and 14175 transitions.
[2023-04-02 23:35:28,864 INFO  L78                 Accepts]: Start accepts. Automaton has 8762 states and 14175 transitions. Word has length 154
[2023-04-02 23:35:28,864 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 23:35:28,864 INFO  L495      AbstractCegarLoop]: Abstraction has 8762 states and 14175 transitions.
[2023-04-02 23:35:28,864 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27)
[2023-04-02 23:35:28,865 INFO  L276                IsEmpty]: Start isEmpty. Operand 8762 states and 14175 transitions.
[2023-04-02 23:35:28,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-04-02 23:35:28,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 23:35:28,868 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-02 23:35:28,883 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-04-02 23:35:29,078 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-04-02 23:35:29,078 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 23:35:29,078 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 23:35:29,078 INFO  L85        PathProgramCache]: Analyzing trace with hash -1338243113, now seen corresponding path program 1 times
[2023-04-02 23:35:29,079 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 23:35:29,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324987635]
[2023-04-02 23:35:29,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:29,079 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 23:35:29,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:29,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-04-02 23:35:29,265 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 23:35:29,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324987635]
[2023-04-02 23:35:29,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324987635] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 23:35:29,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969753586]
[2023-04-02 23:35:29,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 23:35:29,348 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 23:35:29,348 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 23:35:29,350 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-02 23:35:29,353 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-04-02 23:35:29,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 23:35:29,809 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-04-02 23:35:29,812 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 23:35:29,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-04-02 23:35:29,884 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-02 23:35:30,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-04-02 23:35:30,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [969753586] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-02 23:35:30,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [785960114]
[2023-04-02 23:35:30,132 INFO  L159        IcfgInterpreter]: Started Sifa with 138 locations of interest
[2023-04-02 23:35:30,132 INFO  L166        IcfgInterpreter]: Building call graph
[2023-04-02 23:35:30,135 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-04-02 23:35:30,139 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-04-02 23:35:30,140 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-04-02 23:35:32,535 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 172 for LOIs
[2023-04-02 23:35:33,081 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 223 for LOIs
[2023-04-02 23:35:35,785 INFO  L197        IcfgInterpreter]: Interpreting procedure runTest with input of size 223 for LOIs
[2023-04-02 23:35:36,179 INFO  L197        IcfgInterpreter]: Interpreting procedure test with input of size 223 for LOIs
[2023-04-02 23:35:39,577 WARN  L176   XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...