/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/eca-rers2012/Problem04_label39.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-02 17:01:26,517 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-02 17:01:26,519 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-02 17:01:26,558 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-02 17:01:26,560 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-02 17:01:26,563 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-04-02 17:01:26,570 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-04-02 17:01:26,576 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-02 17:01:26,577 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-02 17:01:26,577 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-02 17:01:26,579 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-02 17:01:26,583 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-02 17:01:26,584 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2023-04-02 17:01:26,585 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-02 17:01:26,586 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-02 17:01:26,592 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-02 17:01:26,592 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-02 17:01:26,595 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-02 17:01:26,595 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-02 17:01:26,596 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-02 17:01:26,597 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-02 17:01:26,597 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-02 17:01:26,597 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-02 17:01:26,598 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2023-04-02 17:01:26,598 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-02 17:01:26,599 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-02 17:01:26,600 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 17:01:26,628 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-02 17:01:26,629 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-02 17:01:26,629 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-02 17:01:26,629 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-02 17:01:26,630 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-02 17:01:26,630 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-02 17:01:26,630 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-02 17:01:26,630 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-02 17:01:26,630 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-02 17:01:26,630 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-02 17:01:26,631 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-02 17:01:26,631 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-02 17:01:26,631 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-02 17:01:26,631 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-02 17:01:26,631 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-02 17:01:26,632 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-02 17:01:26,632 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-02 17:01:26,632 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-02 17:01:26,632 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-02 17:01:26,632 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-02 17:01:26,632 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-02 17:01:26,633 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-02 17:01:26,634 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 17:01:26,634 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-02 17:01:26,634 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-02 17:01:26,635 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-02 17:01:26,635 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-02 17:01:26,635 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-02 17:01:26,635 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-02 17:01:26,810 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-02 17:01:26,835 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-02 17:01:26,837 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-02 17:01:26,838 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-02 17:01:26,839 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-02 17:01:26,840 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label39.c
[2023-04-02 17:01:27,886 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-02 17:01:28,209 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-02 17:01:28,210 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label39.c
[2023-04-02 17:01:28,237 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe7ff784/110be98e295e4f5596598f14b8493c95/FLAG07945f14d
[2023-04-02 17:01:28,249 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe7ff784/110be98e295e4f5596598f14b8493c95
[2023-04-02 17:01:28,252 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-02 17:01:28,253 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-02 17:01:28,255 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-02 17:01:28,255 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-02 17:01:28,257 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-02 17:01:28,258 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:01:28" (1/1) ...
[2023-04-02 17:01:28,259 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109b941c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:28, skipping insertion in model container
[2023-04-02 17:01:28,259 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:01:28" (1/1) ...
[2023-04-02 17:01:28,264 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-02 17:01:28,344 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-02 17:01:29,079 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label39.c[176778,176791]
[2023-04-02 17:01:29,098 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 17:01:29,106 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-02 17:01:29,410 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label39.c[176778,176791]
[2023-04-02 17:01:29,418 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 17:01:29,435 INFO  L208         MainTranslator]: Completed translation
[2023-04-02 17:01:29,436 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29 WrapperNode
[2023-04-02 17:01:29,436 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-02 17:01:29,437 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-02 17:01:29,437 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-02 17:01:29,437 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-02 17:01:29,445 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,445 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,484 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,484 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,569 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,588 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,674 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,686 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,703 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-02 17:01:29,704 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-02 17:01:29,705 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-02 17:01:29,705 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-02 17:01:29,706 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (1/1) ...
[2023-04-02 17:01:29,711 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 17:01:29,718 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 17:01:29,734 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 17:01:29,736 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 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-02 17:01:29,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-02 17:01:29,763 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-02 17:01:29,763 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-02 17:01:29,763 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-02 17:01:29,763 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-02 17:01:29,763 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-02 17:01:29,764 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-02 17:01:29,849 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-02 17:01:29,850 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-02 17:01:32,647 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-02 17:01:32,834 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-02 17:01:32,835 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-02 17:01:32,838 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:01:32 BoogieIcfgContainer
[2023-04-02 17:01:32,838 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-02 17:01:32,840 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-02 17:01:32,840 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-02 17:01:32,842 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-02 17:01:32,842 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:01:28" (1/3) ...
[2023-04-02 17:01:32,843 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa5e296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:01:32, skipping insertion in model container
[2023-04-02 17:01:32,843 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:01:29" (2/3) ...
[2023-04-02 17:01:32,843 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa5e296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:01:32, skipping insertion in model container
[2023-04-02 17:01:32,843 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:01:32" (3/3) ...
[2023-04-02 17:01:32,844 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem04_label39.c
[2023-04-02 17:01:32,857 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-02 17:01:32,857 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-02 17:01:32,933 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-02 17:01:32,938 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;@1ebb588c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-02 17:01:32,938 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-02 17:01:32,947 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 785 states, 771 states have (on average 1.9779507133592737) internal successors, (1525), 772 states have internal predecessors, (1525), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-04-02 17:01:32,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 768
[2023-04-02 17:01:32,984 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:01:32,985 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:01:32,985 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:01:32,990 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:01:32,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -1186001260, now seen corresponding path program 1 times
[2023-04-02 17:01:32,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:01:32,998 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644558445]
[2023-04-02 17:01:32,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:01:32,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:01:33,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:01:35,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:01:35,919 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:01:35,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644558445]
[2023-04-02 17:01:35,920 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644558445] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:01:35,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:01:35,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-02 17:01:35,921 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035043618]
[2023-04-02 17:01:35,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:01:35,928 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-02 17:01:35,928 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:01:35,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-02 17:01:35,969 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-02 17:01:35,973 INFO  L87              Difference]: Start difference. First operand  has 785 states, 771 states have (on average 1.9779507133592737) internal successors, (1525), 772 states have internal predecessors, (1525), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 2 states have internal predecessors, (760), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 17:01:38,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:01:38,663 INFO  L93              Difference]: Finished difference Result 2343 states and 4615 transitions.
[2023-04-02 17:01:38,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-02 17:01:38,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 2 states have internal predecessors, (760), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 767
[2023-04-02 17:01:38,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:01:38,687 INFO  L225             Difference]: With dead ends: 2343
[2023-04-02 17:01:38,687 INFO  L226             Difference]: Without dead ends: 1555
[2023-04-02 17:01:38,691 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-02 17:01:38,694 INFO  L413           NwaCegarLoop]: 248 mSDtfsCounter, 250 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 1130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1130 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2023-04-02 17:01:38,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 276 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1130 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2023-04-02 17:01:38,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1555 states.
[2023-04-02 17:01:38,795 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555.
[2023-04-02 17:01:38,798 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1555 states, 1535 states have (on average 1.8371335504885993) internal successors, (2820), 1535 states have internal predecessors, (2820), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17)
[2023-04-02 17:01:38,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2847 transitions.
[2023-04-02 17:01:38,804 INFO  L78                 Accepts]: Start accepts. Automaton has 1555 states and 2847 transitions. Word has length 767
[2023-04-02 17:01:38,806 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:01:38,806 INFO  L495      AbstractCegarLoop]: Abstraction has 1555 states and 2847 transitions.
[2023-04-02 17:01:38,806 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 2 states have internal predecessors, (760), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 17:01:38,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 1555 states and 2847 transitions.
[2023-04-02 17:01:38,818 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 783
[2023-04-02 17:01:38,819 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:01:38,819 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:01:38,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-02 17:01:38,820 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:01:38,820 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:01:38,820 INFO  L85        PathProgramCache]: Analyzing trace with hash -882195498, now seen corresponding path program 1 times
[2023-04-02 17:01:38,821 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:01:38,821 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505471625]
[2023-04-02 17:01:38,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:01:38,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:01:38,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:01:39,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:01:39,737 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:01:39,737 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505471625]
[2023-04-02 17:01:39,737 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505471625] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:01:39,737 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:01:39,737 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-02 17:01:39,737 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763625692]
[2023-04-02 17:01:39,738 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:01:39,739 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 17:01:39,739 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:01:39,740 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 17:01:39,741 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-02 17:01:39,741 INFO  L87              Difference]: Start difference. First operand 1555 states and 2847 transitions. Second operand  has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:01:42,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:01:42,931 INFO  L93              Difference]: Finished difference Result 4749 states and 8709 transitions.
[2023-04-02 17:01:42,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-02 17:01:42,934 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 782
[2023-04-02 17:01:42,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:01:42,951 INFO  L225             Difference]: With dead ends: 4749
[2023-04-02 17:01:42,952 INFO  L226             Difference]: Without dead ends: 3199
[2023-04-02 17:01:42,962 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-04-02 17:01:42,965 INFO  L413           NwaCegarLoop]: 42 mSDtfsCounter, 2884 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2023-04-02 17:01:42,969 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2884 Valid, 111 Invalid, 5875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 4239 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2023-04-02 17:01:42,974 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3199 states.
[2023-04-02 17:01:43,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3169.
[2023-04-02 17:01:43,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3169 states, 3109 states have (on average 1.7027983274364749) internal successors, (5294), 3115 states have internal predecessors, (5294), 18 states have call successors, (18), 18 states have call predecessors, (18), 41 states have return successors, (104), 35 states have call predecessors, (104), 17 states have call successors, (104)
[2023-04-02 17:01:43,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5416 transitions.
[2023-04-02 17:01:43,060 INFO  L78                 Accepts]: Start accepts. Automaton has 3169 states and 5416 transitions. Word has length 782
[2023-04-02 17:01:43,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:01:43,061 INFO  L495      AbstractCegarLoop]: Abstraction has 3169 states and 5416 transitions.
[2023-04-02 17:01:43,062 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:01:43,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 3169 states and 5416 transitions.
[2023-04-02 17:01:43,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 796
[2023-04-02 17:01:43,081 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:01:43,081 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:01:43,082 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-02 17:01:43,082 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:01:43,082 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:01:43,082 INFO  L85        PathProgramCache]: Analyzing trace with hash 1325528782, now seen corresponding path program 1 times
[2023-04-02 17:01:43,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:01:43,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344834051]
[2023-04-02 17:01:43,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:01:43,083 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:01:43,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:01:43,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:01:43,980 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:01:43,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344834051]
[2023-04-02 17:01:43,980 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344834051] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:01:43,980 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:01:43,980 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-02 17:01:43,981 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107853000]
[2023-04-02 17:01:43,981 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:01:43,981 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 17:01:43,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:01:43,983 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 17:01:43,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-02 17:01:43,983 INFO  L87              Difference]: Start difference. First operand 3169 states and 5416 transitions. Second operand  has 5 states, 5 states have (on average 157.2) internal successors, (786), 4 states have internal predecessors, (786), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:01:46,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:01:46,921 INFO  L93              Difference]: Finished difference Result 9673 states and 16925 transitions.
[2023-04-02 17:01:46,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-02 17:01:46,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 157.2) internal successors, (786), 4 states have internal predecessors, (786), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 795
[2023-04-02 17:01:46,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:01:46,951 INFO  L225             Difference]: With dead ends: 9673
[2023-04-02 17:01:46,951 INFO  L226             Difference]: Without dead ends: 6509
[2023-04-02 17:01:46,958 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-04-02 17:01:46,958 INFO  L413           NwaCegarLoop]: 48 mSDtfsCounter, 2736 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 5821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2023-04-02 17:01:46,959 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 127 Invalid, 5821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 5254 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2023-04-02 17:01:46,964 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6509 states.
[2023-04-02 17:01:47,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6443.
[2023-04-02 17:01:47,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6443 states, 6284 states have (on average 1.6207829408020369) internal successors, (10185), 6313 states have internal predecessors, (10185), 34 states have call successors, (34), 34 states have call predecessors, (34), 124 states have return successors, (482), 95 states have call predecessors, (482), 33 states have call successors, (482)
[2023-04-02 17:01:47,127 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6443 states to 6443 states and 10701 transitions.
[2023-04-02 17:01:47,127 INFO  L78                 Accepts]: Start accepts. Automaton has 6443 states and 10701 transitions. Word has length 795
[2023-04-02 17:01:47,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:01:47,128 INFO  L495      AbstractCegarLoop]: Abstraction has 6443 states and 10701 transitions.
[2023-04-02 17:01:47,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 157.2) internal successors, (786), 4 states have internal predecessors, (786), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:01:47,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 6443 states and 10701 transitions.
[2023-04-02 17:01:47,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 804
[2023-04-02 17:01:47,148 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:01:47,148 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:47,149 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-02 17:01:47,149 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:01:47,150 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:01:47,150 INFO  L85        PathProgramCache]: Analyzing trace with hash 1399427120, now seen corresponding path program 1 times
[2023-04-02 17:01:47,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:01:47,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832498064]
[2023-04-02 17:01:47,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:01:47,151 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:01:47,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:01:48,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-04-02 17:01:48,560 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:01:48,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832498064]
[2023-04-02 17:01:48,560 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832498064] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 17:01:48,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19805280]
[2023-04-02 17:01:48,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:01:48,561 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 17:01:48,561 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 17:01:48,564 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 17:01:48,567 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 17:01:48,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:01:48,891 INFO  L262         TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 17:01:48,917 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 17:01:49,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:01:49,091 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-02 17:01:49,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:01:49,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [19805280] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-02 17:01:49,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81632158]
[2023-04-02 17:01:49,283 INFO  L159        IcfgInterpreter]: Started Sifa with 771 locations of interest
[2023-04-02 17:01:49,283 INFO  L166        IcfgInterpreter]: Building call graph
[2023-04-02 17:01:49,287 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-04-02 17:01:49,291 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-04-02 17:01:49,291 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-04-02 17:01:49,530 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 76 for LOIs
[2023-04-02 17:02:01,122 WARN  L223               SmtUtils]: Spent 10.27s on a formula simplification that was a NOOP. DAG size: 1032 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)
[2023-04-02 17:02:53,145 WARN  L176   XnfTransformerHelper]: Simplifying disjunction of 18468 conjuctions. This might take some time...
[2023-04-02 17:03:13,680 INFO  L192   XnfTransformerHelper]: Simplified to disjunction of 18468 conjuctions.