/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 EqDomain -i ../sv-benchmarks/c/eca-rers2012/Problem05_label49.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 09:35:03,895 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 09:35:03,897 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 09:35:03,939 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 09:35:03,942 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 09:35:03,945 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 09:35:03,947 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 09:35:03,951 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2023-04-01 09:35:03,957 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-04-01 09:35:03,961 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 09:35:03,964 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 09:35:03,965 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 09:35:03,966 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 09:35:03,967 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 09:35:03,969 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 09:35:03,974 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 09:35:03,975 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 09:35:03,976 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 09:35:03,977 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 09:35:03,978 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 09:35:03,986 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 09:35:03,987 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 09:35:03,991 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 09:35:03,992 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
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[2023-04-01 09:35:03,994 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 09:35:03,995 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 09:35:03,996 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
[2023-04-01 09:35:04,026 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 09:35:04,026 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 09:35:04,027 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 09:35:04,027 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 09:35:04,028 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 09:35:04,028 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 09:35:04,028 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 09:35:04,028 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 09:35:04,028 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 09:35:04,028 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 09:35:04,029 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 09:35:04,029 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 09:35:04,029 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 09:35:04,030 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 09:35:04,030 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 09:35:04,030 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 09:35:04,030 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 09:35:04,030 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 09:35:04,031 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 09:35:04,031 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 09:35:04,031 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 09:35:04,031 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 09:35:04,032 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 09:35:04,032 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 09:35:04,032 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 09:35:04,032 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 09:35:04,033 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 09:35:04,033 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 09:35:04,034 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 09:35:04,034 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 09:35:04,035 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 09:35:04,035 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain
[2023-04-01 09:35:04,246 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 09:35:04,262 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 09:35:04,265 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 09:35:04,266 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 09:35:04,266 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 09:35:04,267 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label49.c
[2023-04-01 09:35:05,441 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 09:35:06,021 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 09:35:06,022 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label49.c
[2023-04-01 09:35:06,070 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69cc3eac1/d9769837c4fc41629f281ae96d4100bb/FLAG950266b54
[2023-04-01 09:35:06,087 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69cc3eac1/d9769837c4fc41629f281ae96d4100bb
[2023-04-01 09:35:06,089 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 09:35:06,091 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 09:35:06,094 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 09:35:06,094 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 09:35:06,097 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 09:35:06,098 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:35:06" (1/1) ...
[2023-04-01 09:35:06,099 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e3d0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:06, skipping insertion in model container
[2023-04-01 09:35:06,099 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:35:06" (1/1) ...
[2023-04-01 09:35:06,105 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 09:35:06,301 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 09:35:07,722 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label49.c[380250,380263]
[2023-04-01 09:35:07,737 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 09:35:07,746 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 09:35:08,593 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label49.c[380250,380263]
[2023-04-01 09:35:08,598 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 09:35:08,645 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 09:35:08,645 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08 WrapperNode
[2023-04-01 09:35:08,645 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 09:35:08,647 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 09:35:08,647 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 09:35:08,647 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 09:35:08,658 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,658 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,737 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,738 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,896 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,935 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:08,964 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:09,082 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:09,128 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 09:35:09,129 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 09:35:09,129 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 09:35:09,129 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 09:35:09,131 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (1/1) ...
[2023-04-01 09:35:09,138 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 09:35:09,147 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 09:35:09,162 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-04-01 09:35:09,181 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-04-01 09:35:09,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-04-01 09:35:09,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-04-01 09:35:09,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 09:35:09,204 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 09:35:09,231 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 09:35:09,232 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 09:35:09,233 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 09:35:09,363 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 09:35:09,365 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 09:35:15,557 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 09:35:16,960 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 09:35:16,960 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 09:35:16,965 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:35:16 BoogieIcfgContainer
[2023-04-01 09:35:16,965 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 09:35:16,967 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 09:35:16,967 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 09:35:16,970 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 09:35:16,970 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:35:06" (1/3) ...
[2023-04-01 09:35:16,970 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eab5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:35:16, skipping insertion in model container
[2023-04-01 09:35:16,971 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:35:08" (2/3) ...
[2023-04-01 09:35:16,971 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eab5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:35:16, skipping insertion in model container
[2023-04-01 09:35:16,971 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:35:16" (3/3) ...
[2023-04-01 09:35:16,972 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label49.c
[2023-04-01 09:35:16,989 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 09:35:16,989 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 09:35:17,057 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 09:35:17,063 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;@95f972f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 09:35:17,063 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 09:35:17,074 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1681 states, 1659 states have (on average 1.9825195901145267) internal successors, (3289), 1660 states have internal predecessors, (3289), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 09:35:17,167 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1652
[2023-04-01 09:35:17,167 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 09:35:17,169 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 09:35:17,170 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 09:35:17,177 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 09:35:17,178 INFO  L85        PathProgramCache]: Analyzing trace with hash 1963681635, now seen corresponding path program 1 times
[2023-04-01 09:35:17,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 09:35:17,187 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6096805]
[2023-04-01 09:35:17,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 09:35:17,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 09:35:17,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 09:35:25,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 09:35:25,712 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 09:35:25,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6096805]
[2023-04-01 09:35:25,713 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6096805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 09:35:25,713 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 09:35:25,713 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 09:35:25,715 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914951037]
[2023-04-01 09:35:25,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 09:35:25,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 09:35:25,723 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 09:35:25,762 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 09:35:25,763 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 09:35:25,769 INFO  L87              Difference]: Start difference. First operand  has 1681 states, 1659 states have (on average 1.9825195901145267) internal successors, (3289), 1660 states have internal predecessors, (3289), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 09:35:31,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 09:35:31,755 INFO  L93              Difference]: Finished difference Result 5031 states and 9947 transitions.
[2023-04-01 09:35:31,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 09:35:31,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1651
[2023-04-01 09:35:31,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 09:35:31,849 INFO  L225             Difference]: With dead ends: 5031
[2023-04-01 09:35:31,849 INFO  L226             Difference]: Without dead ends: 3347
[2023-04-01 09:35:31,858 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 09:35:31,861 INFO  L413           NwaCegarLoop]: 140 mSDtfsCounter, 81 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 5637 mSolverCounterSat, 1604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 7241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1604 IncrementalHoareTripleChecker+Valid, 5637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-04-01 09:35:31,862 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 188 Invalid, 7241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1604 Valid, 5637 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-04-01 09:35:31,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3347 states.
[2023-04-01 09:35:32,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347.
[2023-04-01 09:35:32,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3347 states, 3311 states have (on average 1.9553005134400483) internal successors, (6474), 3311 states have internal predecessors, (6474), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (33), 17 states have call predecessors, (33), 17 states have call successors, (33)
[2023-04-01 09:35:32,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 6525 transitions.
[2023-04-01 09:35:32,058 INFO  L78                 Accepts]: Start accepts. Automaton has 3347 states and 6525 transitions. Word has length 1651
[2023-04-01 09:35:32,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 09:35:32,063 INFO  L495      AbstractCegarLoop]: Abstraction has 3347 states and 6525 transitions.
[2023-04-01 09:35:32,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 09:35:32,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 3347 states and 6525 transitions.
[2023-04-01 09:35:32,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2023-04-01 09:35:32,130 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 09:35:32,130 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 09:35:32,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 09:35:32,131 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 09:35:32,132 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 09:35:32,132 INFO  L85        PathProgramCache]: Analyzing trace with hash 647428867, now seen corresponding path program 1 times
[2023-04-01 09:35:32,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 09:35:32,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860451807]
[2023-04-01 09:35:32,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 09:35:32,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 09:35:32,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 09:35:35,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 09:35:35,140 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 09:35:35,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860451807]
[2023-04-01 09:35:35,141 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860451807] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 09:35:35,141 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 09:35:35,141 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-01 09:35:35,141 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173582947]
[2023-04-01 09:35:35,142 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 09:35:35,145 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 09:35:35,145 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 09:35:35,148 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 09:35:35,148 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-01 09:35:35,153 INFO  L87              Difference]: Start difference. First operand 3347 states and 6525 transitions. Second operand  has 5 states, 5 states have (on average 329.6) internal successors, (1648), 4 states have internal predecessors, (1648), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 09:35:42,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 09:35:42,348 INFO  L93              Difference]: Finished difference Result 10238 states and 19971 transitions.
[2023-04-01 09:35:42,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-04-01 09:35:42,350 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 329.6) internal successors, (1648), 4 states have internal predecessors, (1648), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1661
[2023-04-01 09:35:42,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 09:35:42,395 INFO  L225             Difference]: With dead ends: 10238
[2023-04-01 09:35:42,395 INFO  L226             Difference]: Without dead ends: 6896
[2023-04-01 09:35:42,409 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
[2023-04-01 09:35:42,412 INFO  L413           NwaCegarLoop]: 83 mSDtfsCounter, 6651 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9133 mSolverCounterSat, 2715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 11848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2715 IncrementalHoareTripleChecker+Valid, 9133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-04-01 09:35:42,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 210 Invalid, 11848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2715 Valid, 9133 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-04-01 09:35:42,422 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6896 states.
[2023-04-01 09:35:42,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6896 to 6825.
[2023-04-01 09:35:42,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6825 states, 6709 states have (on average 1.8132359517066627) internal successors, (12165), 6715 states have internal predecessors, (12165), 34 states have call successors, (34), 34 states have call predecessors, (34), 81 states have return successors, (209), 75 states have call predecessors, (209), 33 states have call successors, (209)
[2023-04-01 09:35:42,646 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 12408 transitions.
[2023-04-01 09:35:42,647 INFO  L78                 Accepts]: Start accepts. Automaton has 6825 states and 12408 transitions. Word has length 1661
[2023-04-01 09:35:42,647 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 09:35:42,647 INFO  L495      AbstractCegarLoop]: Abstraction has 6825 states and 12408 transitions.
[2023-04-01 09:35:42,648 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 329.6) internal successors, (1648), 4 states have internal predecessors, (1648), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 09:35:42,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 6825 states and 12408 transitions.
[2023-04-01 09:35:42,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1663
[2023-04-01 09:35:42,741 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 09:35:42,742 INFO  L195           NwaCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 09:35:42,742 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 09:35:42,742 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 09:35:42,744 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 09:35:42,744 INFO  L85        PathProgramCache]: Analyzing trace with hash 1263919012, now seen corresponding path program 1 times
[2023-04-01 09:35:42,745 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 09:35:42,745 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032612357]
[2023-04-01 09:35:42,745 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 09:35:42,745 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 09:35:43,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 09:35:46,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 09:35:46,590 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 09:35:46,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032612357]
[2023-04-01 09:35:46,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032612357] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 09:35:46,591 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 09:35:46,591 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 09:35:46,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005301123]
[2023-04-01 09:35:46,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 09:35:46,593 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 09:35:46,593 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 09:35:46,595 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 09:35:46,596 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 09:35:46,597 INFO  L87              Difference]: Start difference. First operand 6825 states and 12408 transitions. Second operand  has 3 states, 3 states have (on average 549.6666666666666) internal successors, (1649), 3 states have internal predecessors, (1649), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 09:35:51,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 09:35:51,703 INFO  L93              Difference]: Finished difference Result 20454 states and 37726 transitions.
[2023-04-01 09:35:51,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 09:35:51,704 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 549.6666666666666) internal successors, (1649), 3 states have internal predecessors, (1649), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1662
[2023-04-01 09:35:51,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 09:35:51,777 INFO  L225             Difference]: With dead ends: 20454
[2023-04-01 09:35:51,777 INFO  L226             Difference]: Without dead ends: 13634
[2023-04-01 09:35:51,797 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 09:35:51,798 INFO  L413           NwaCegarLoop]: 2970 mSDtfsCounter, 143 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4725 mSolverCounterSat, 2119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2119 IncrementalHoareTripleChecker+Valid, 4725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-04-01 09:35:51,798 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 3025 Invalid, 6844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2119 Valid, 4725 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-04-01 09:35:51,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13634 states.
[2023-04-01 09:35:52,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13634 to 13634.
[2023-04-01 09:35:52,080 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13634 states, 13409 states have (on average 1.5438138563651278) internal successors, (20701), 13421 states have internal predecessors, (20701), 66 states have call successors, (66), 66 states have call predecessors, (66), 158 states have return successors, (748), 146 states have call predecessors, (748), 65 states have call successors, (748)
[2023-04-01 09:35:52,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13634 states to 13634 states and 21515 transitions.
[2023-04-01 09:35:52,232 INFO  L78                 Accepts]: Start accepts. Automaton has 13634 states and 21515 transitions. Word has length 1662
[2023-04-01 09:35:52,236 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 09:35:52,236 INFO  L495      AbstractCegarLoop]: Abstraction has 13634 states and 21515 transitions.
[2023-04-01 09:35:52,237 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 549.6666666666666) internal successors, (1649), 3 states have internal predecessors, (1649), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 09:35:52,237 INFO  L276                IsEmpty]: Start isEmpty. Operand 13634 states and 21515 transitions.
[2023-04-01 09:35:52,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1667
[2023-04-01 09:35:52,292 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 09:35:52,293 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 09:35:52,293 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 09:35:52,293 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 09:35:52,295 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 09:35:52,295 INFO  L85        PathProgramCache]: Analyzing trace with hash -43289835, now seen corresponding path program 1 times
[2023-04-01 09:35:52,296 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 09:35:52,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193530298]
[2023-04-01 09:35:52,296 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 09:35:52,296 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 09:35:52,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat