/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/Problem06_label35.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-02 17:36:49,878 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-02 17:36:49,879 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-02 17:36:49,897 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-02 17:36:49,897 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-02 17:36:49,898 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-02 17:36:49,899 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-02 17:36:49,900 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-02 17:36:49,901 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-02 17:36:49,902 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-02 17:36:49,902 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-02 17:36:49,903 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-02 17:36:49,904 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-02 17:36:49,904 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-02 17:36:49,905 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-02 17:36:49,906 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-02 17:36:49,906 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-02 17:36:49,907 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-02 17:36:49,908 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-02 17:36:49,921 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-02 17:36:49,922 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-02 17:36:49,923 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-02 17:36:49,923 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-02 17:36:49,924 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-02 17:36:49,926 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-02 17:36:49,926 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-02 17:36:49,926 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-02 17:36:49,927 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-02 17:36:49,927 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-02 17:36:49,928 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-02 17:36:49,928 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-02 17:36:49,929 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-02 17:36:49,929 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-02 17:36:49,930 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-02 17:36:49,930 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-02 17:36:49,930 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-02 17:36:49,931 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-02 17:36:49,931 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-02 17:36:49,931 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-02 17:36:49,932 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-02 17:36:49,932 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-02 17:36:49,933 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 17:36:49,948 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-02 17:36:49,948 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-02 17:36:49,948 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-02 17:36:49,948 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-02 17:36:49,949 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-02 17:36:49,949 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-02 17:36:49,949 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-02 17:36:49,949 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-02 17:36:49,949 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-02 17:36:49,949 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-02 17:36:49,950 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-02 17:36:49,950 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-02 17:36:49,951 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-02 17:36:49,951 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-02 17:36:49,952 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 17:36:49,952 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-02 17:36:49,952 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-02 17:36:49,953 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-02 17:36:49,953 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-02 17:36:49,953 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-02 17:36:49,953 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-02 17:36:49,953 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-02 17:36:50,117 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-02 17:36:50,129 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-02 17:36:50,131 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-02 17:36:50,131 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-02 17:36:50,131 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-02 17:36:50,132 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label35.c
[2023-04-02 17:36:51,115 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-02 17:36:51,564 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-02 17:36:51,564 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label35.c
[2023-04-02 17:36:51,605 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf851632/468caa7bd7cb4297a1afc8ee363948b1/FLAGe5e321025
[2023-04-02 17:36:51,619 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf851632/468caa7bd7cb4297a1afc8ee363948b1
[2023-04-02 17:36:51,622 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-02 17:36:51,623 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-02 17:36:51,626 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-02 17:36:51,626 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-02 17:36:51,628 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-02 17:36:51,628 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:36:51" (1/1) ...
[2023-04-02 17:36:51,630 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af9a046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:51, skipping insertion in model container
[2023-04-02 17:36:51,630 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:36:51" (1/1) ...
[2023-04-02 17:36:51,634 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-02 17:36:51,768 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-02 17:36:52,957 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/Problem06_label35.c[334547,334560]
[2023-04-02 17:36:52,976 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 17:36:52,986 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-02 17:36:53,648 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/Problem06_label35.c[334547,334560]
[2023-04-02 17:36:53,653 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 17:36:53,752 INFO  L208         MainTranslator]: Completed translation
[2023-04-02 17:36:53,752 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53 WrapperNode
[2023-04-02 17:36:53,752 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-02 17:36:53,753 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-02 17:36:53,753 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-02 17:36:53,753 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-02 17:36:53,767 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:53,767 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:53,863 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:53,863 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:53,963 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:54,024 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:54,043 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:54,057 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:54,092 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-02 17:36:54,093 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-02 17:36:54,093 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-02 17:36:54,093 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-02 17:36:54,094 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (1/1) ...
[2023-04-02 17:36:54,100 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 17:36:54,106 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 17:36:54,118 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 17:36:54,123 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 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-02 17:36:54,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-02 17:36:54,145 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-02 17:36:54,145 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-02 17:36:54,145 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-02 17:36:54,145 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-02 17:36:54,145 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-02 17:36:54,146 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-02 17:36:54,254 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-02 17:36:54,256 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-02 17:36:58,304 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-02 17:36:58,952 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-02 17:36:58,952 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-02 17:36:58,955 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:36:58 BoogieIcfgContainer
[2023-04-02 17:36:58,955 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-02 17:36:58,957 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-02 17:36:58,957 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-02 17:36:58,959 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-02 17:36:58,959 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:36:51" (1/3) ...
[2023-04-02 17:36:58,959 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e4f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:36:58, skipping insertion in model container
[2023-04-02 17:36:58,959 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:36:53" (2/3) ...
[2023-04-02 17:36:58,959 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e4f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:36:58, skipping insertion in model container
[2023-04-02 17:36:58,960 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:36:58" (3/3) ...
[2023-04-02 17:36:58,960 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem06_label35.c
[2023-04-02 17:36:58,973 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-02 17:36:58,973 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-02 17:36:59,026 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-02 17:36:59,031 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;@1f43e2f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-02 17:36:59,031 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-02 17:36:59,037 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 964 states, 948 states have (on average 1.978902953586498) internal successors, (1876), 949 states have internal predecessors, (1876), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-02 17:36:59,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 944
[2023-04-02 17:36:59,081 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:36:59,083 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:59,083 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:36:59,087 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:36:59,087 INFO  L85        PathProgramCache]: Analyzing trace with hash 1715922154, now seen corresponding path program 1 times
[2023-04-02 17:36:59,093 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:36:59,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856025977]
[2023-04-02 17:36:59,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:36:59,094 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:36:59,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:37:03,340 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 17:37:03,340 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:37:03,341 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856025977]
[2023-04-02 17:37:03,341 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856025977] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:37:03,341 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:37:03,341 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-02 17:37:03,342 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211860986]
[2023-04-02 17:37:03,343 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:37:03,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-02 17:37:03,349 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:37:03,377 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-02 17:37:03,378 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-02 17:37:03,381 INFO  L87              Difference]: Start difference. First operand  has 964 states, 948 states have (on average 1.978902953586498) internal successors, (1876), 949 states have internal predecessors, (1876), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand  has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 17:37:06,765 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:37:06,765 INFO  L93              Difference]: Finished difference Result 2880 states and 5678 transitions.
[2023-04-02 17:37:06,766 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-02 17:37:06,767 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 943
[2023-04-02 17:37:06,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:37:06,795 INFO  L225             Difference]: With dead ends: 2880
[2023-04-02 17:37:06,795 INFO  L226             Difference]: Without dead ends: 1913
[2023-04-02 17:37:06,802 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 17:37:06,805 INFO  L413           NwaCegarLoop]: 196 mSDtfsCounter, 229 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-04-02 17:37:06,805 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 245 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-04-02 17:37:06,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1913 states.
[2023-04-02 17:37:06,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913.
[2023-04-02 17:37:06,885 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1913 states, 1889 states have (on average 1.8851244044467972) internal successors, (3561), 1889 states have internal predecessors, (3561), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21)
[2023-04-02 17:37:06,891 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3594 transitions.
[2023-04-02 17:37:06,892 INFO  L78                 Accepts]: Start accepts. Automaton has 1913 states and 3594 transitions. Word has length 943
[2023-04-02 17:37:06,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:37:06,894 INFO  L495      AbstractCegarLoop]: Abstraction has 1913 states and 3594 transitions.
[2023-04-02 17:37:06,894 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 2 states have internal predecessors, (935), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 17:37:06,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 1913 states and 3594 transitions.
[2023-04-02 17:37:06,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 952
[2023-04-02 17:37:06,914 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:37:06,914 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:37:06,914 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-02 17:37:06,915 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:37:06,915 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:37:06,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -1195581717, now seen corresponding path program 1 times
[2023-04-02 17:37:06,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:37:06,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383589606]
[2023-04-02 17:37:06,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:37:06,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:37:07,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:37:08,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:37:08,649 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:37:08,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383589606]
[2023-04-02 17:37:08,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383589606] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:37:08,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:37:08,650 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-02 17:37:08,650 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579376739]
[2023-04-02 17:37:08,650 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:37:08,653 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 17:37:08,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:37:08,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 17:37:08,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-02 17:37:08,654 INFO  L87              Difference]: Start difference. First operand 1913 states and 3594 transitions. Second operand  has 5 states, 5 states have (on average 188.2) internal successors, (941), 4 states have internal predecessors, (941), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:37:10,393 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:37:10,393 INFO  L93              Difference]: Finished difference Result 5812 states and 10925 transitions.
[2023-04-02 17:37:10,394 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-04-02 17:37:10,394 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 188.2) internal successors, (941), 4 states have internal predecessors, (941), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 951
[2023-04-02 17:37:10,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:37:10,409 INFO  L225             Difference]: With dead ends: 5812
[2023-04-02 17:37:10,409 INFO  L226             Difference]: Without dead ends: 3904
[2023-04-02 17:37:10,413 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-04-02 17:37:10,414 INFO  L413           NwaCegarLoop]: 1256 mSDtfsCounter, 5138 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5138 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-04-02 17:37:10,415 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5138 Valid, 3692 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-04-02 17:37:10,417 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3904 states.
[2023-04-02 17:37:10,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3874.
[2023-04-02 17:37:10,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3874 states, 3810 states have (on average 1.873490813648294) internal successors, (7138), 3815 states have internal predecessors, (7138), 22 states have call successors, (22), 22 states have call predecessors, (22), 41 states have return successors, (97), 36 states have call predecessors, (97), 21 states have call successors, (97)
[2023-04-02 17:37:10,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 7257 transitions.
[2023-04-02 17:37:10,527 INFO  L78                 Accepts]: Start accepts. Automaton has 3874 states and 7257 transitions. Word has length 951
[2023-04-02 17:37:10,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:37:10,527 INFO  L495      AbstractCegarLoop]: Abstraction has 3874 states and 7257 transitions.
[2023-04-02 17:37:10,528 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 188.2) internal successors, (941), 4 states have internal predecessors, (941), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:37:10,528 INFO  L276                IsEmpty]: Start isEmpty. Operand 3874 states and 7257 transitions.
[2023-04-02 17:37:10,542 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 954
[2023-04-02 17:37:10,543 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:37:10,543 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:37:10,543 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-02 17:37:10,544 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:37:10,545 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:37:10,545 INFO  L85        PathProgramCache]: Analyzing trace with hash 909365735, now seen corresponding path program 1 times
[2023-04-02 17:37:10,545 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:37:10,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093271353]
[2023-04-02 17:37:10,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:37:10,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:37:10,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:37:11,842 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:37:11,842 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:37:11,842 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093271353]
[2023-04-02 17:37:11,842 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093271353] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 17:37:11,842 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 17:37:11,843 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-02 17:37:11,843 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868475556]
[2023-04-02 17:37:11,843 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 17:37:11,844 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-02 17:37:11,844 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 17:37:11,845 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-02 17:37:11,845 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-02 17:37:11,845 INFO  L87              Difference]: Start difference. First operand 3874 states and 7257 transitions. Second operand  has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:37:15,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 17:37:15,871 INFO  L93              Difference]: Finished difference Result 12040 states and 22661 transitions.
[2023-04-02 17:37:15,871 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-04-02 17:37:15,872 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 953
[2023-04-02 17:37:15,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 17:37:15,900 INFO  L225             Difference]: With dead ends: 12040
[2023-04-02 17:37:15,901 INFO  L226             Difference]: Without dead ends: 8171
[2023-04-02 17:37:15,909 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 17:37:15,909 INFO  L413           NwaCegarLoop]: 79 mSDtfsCounter, 3338 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 5858 mSolverCounterSat, 1188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 5858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-04-02 17:37:15,910 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 218 Invalid, 7046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 5858 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-04-02 17:37:15,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8171 states.
[2023-04-02 17:37:16,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 7936.
[2023-04-02 17:37:16,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7936 states, 7741 states have (on average 1.646557292339491) internal successors, (12746), 7769 states have internal predecessors, (12746), 42 states have call successors, (42), 42 states have call predecessors, (42), 152 states have return successors, (488), 124 states have call predecessors, (488), 41 states have call successors, (488)
[2023-04-02 17:37:16,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7936 states to 7936 states and 13276 transitions.
[2023-04-02 17:37:16,086 INFO  L78                 Accepts]: Start accepts. Automaton has 7936 states and 13276 transitions. Word has length 953
[2023-04-02 17:37:16,086 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 17:37:16,087 INFO  L495      AbstractCegarLoop]: Abstraction has 7936 states and 13276 transitions.
[2023-04-02 17:37:16,087 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 188.6) internal successors, (943), 4 states have internal predecessors, (943), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 17:37:16,088 INFO  L276                IsEmpty]: Start isEmpty. Operand 7936 states and 13276 transitions.
[2023-04-02 17:37:16,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 967
[2023-04-02 17:37:16,107 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 17:37:16,108 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 17:37:16,108 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-02 17:37:16,108 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 17:37:16,115 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 17:37:16,115 INFO  L85        PathProgramCache]: Analyzing trace with hash 2052167300, now seen corresponding path program 1 times
[2023-04-02 17:37:16,115 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 17:37:16,115 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507636484]
[2023-04-02 17:37:16,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:37:16,116 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 17:37:16,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:37:19,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-04-02 17:37:19,012 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 17:37:19,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507636484]
[2023-04-02 17:37:19,012 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507636484] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-02 17:37:19,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151628199]
[2023-04-02 17:37:19,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 17:37:19,013 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-02 17:37:19,013 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 17:37:19,015 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 17:37:19,016 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 17:37:19,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 17:37:19,505 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-02 17:37:19,526 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-02 17:37:19,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:37:19,617 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-02 17:37:19,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 17:37:19,706 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [151628199] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-02 17:37:19,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576614671]
[2023-04-02 17:37:19,735 INFO  L159        IcfgInterpreter]: Started Sifa with 947 locations of interest
[2023-04-02 17:37:19,736 INFO  L166        IcfgInterpreter]: Building call graph
[2023-04-02 17:37:19,739 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-04-02 17:37:19,742 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-04-02 17:37:19,742 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-04-02 17:37:20,260 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 166 for LOIs
[2023-04-02 17:37:28,401 WARN  L223               SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 957 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)
[2023-04-02 17:37:39,868 WARN  L223               SmtUtils]: Spent 6.78s on a formula simplification that was a NOOP. DAG size: 957 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)
[2023-04-02 17:38:14,864 WARN  L176   XnfTransformerHelper]: Simplifying disjunction of 15750 conjuctions. This might take some time...
[2023-04-02 17:38:30,100 INFO  L192   XnfTransformerHelper]: Simplified to disjunction of 15750 conjuctions.