/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/Problem05_label25.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 03:30:32,891 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 03:30:32,892 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 03:30:32,918 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 03:30:32,919 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 03:30:32,920 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 03:30:32,921 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 03:30:32,922 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 03:30:32,922 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 03:30:32,923 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 03:30:32,925 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 03:30:32,925 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 03:30:32,926 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 03:30:32,927 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 03:30:32,927 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 03:30:32,928 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 03:30:32,928 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 03:30:32,929 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 03:30:32,930 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 03:30:32,931 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 03:30:32,934 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 03:30:32,935 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 03:30:32,935 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 03:30:32,938 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 03:30:32,938 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 03:30:32,939 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-01 03:30:32,940 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 03:30:32,941 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 03:30:32,941 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 03:30:32,942 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 03:30:32,943 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 03:30:32,944 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 03:30:32,957 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 03:30:32,958 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 03:30:32,958 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 03:30:32,958 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 03:30:32,958 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 03:30:32,958 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 03:30:32,959 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 03:30:32,959 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 03:30:32,959 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 03:30:32,960 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 03:30:32,960 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 03:30:32,961 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 03:30:32,961 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 03:30:32,961 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 03:30:32,962 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 03:30:32,962 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 03:30:32,962 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 03:30:32,962 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 03:30:32,962 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 03:30:32,962 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 03:30:33,155 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 03:30:33,180 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 03:30:33,182 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 03:30:33,183 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 03:30:33,183 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 03:30:33,184 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label25.c
[2023-04-01 03:30:34,212 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 03:30:34,664 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 03:30:34,664 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label25.c
[2023-04-01 03:30:34,704 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb5d521f/138ebe57b12a4041b7acdec29bcc0fa5/FLAG6f210b336
[2023-04-01 03:30:34,719 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb5d521f/138ebe57b12a4041b7acdec29bcc0fa5
[2023-04-01 03:30:34,722 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 03:30:34,724 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 03:30:34,727 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 03:30:34,727 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 03:30:34,730 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 03:30:34,730 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:30:34" (1/1) ...
[2023-04-01 03:30:34,732 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2bcaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:34, skipping insertion in model container
[2023-04-01 03:30:34,732 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:30:34" (1/1) ...
[2023-04-01 03:30:34,737 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 03:30:34,871 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 03:30:36,212 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_label25.c[378353,378366]
[2023-04-01 03:30:36,227 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 03:30:36,235 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 03:30:36,800 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_label25.c[378353,378366]
[2023-04-01 03:30:36,804 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 03:30:36,839 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 03:30:36,840 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36 WrapperNode
[2023-04-01 03:30:36,840 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 03:30:36,841 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 03:30:36,841 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 03:30:36,841 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 03:30:36,850 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:36,850 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:36,914 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:36,914 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,024 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,056 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,110 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,131 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,206 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 03:30:37,207 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 03:30:37,207 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 03:30:37,207 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 03:30:37,208 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (1/1) ...
[2023-04-01 03:30:37,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 03:30:37,223 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 03:30:37,234 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 03:30:37,252 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 03:30:37,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 03:30:37,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 03:30:37,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-04-01 03:30:37,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-04-01 03:30:37,264 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 03:30:37,265 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 03:30:37,499 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 03:30:37,500 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 03:30:42,304 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 03:30:43,589 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 03:30:43,589 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 03:30:43,593 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:30:43 BoogieIcfgContainer
[2023-04-01 03:30:43,593 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 03:30:43,595 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 03:30:43,595 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 03:30:43,597 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 03:30:43,597 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:30:34" (1/3) ...
[2023-04-01 03:30:43,598 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ead66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:30:43, skipping insertion in model container
[2023-04-01 03:30:43,598 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:36" (2/3) ...
[2023-04-01 03:30:43,598 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ead66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:30:43, skipping insertion in model container
[2023-04-01 03:30:43,598 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:30:43" (3/3) ...
[2023-04-01 03:30:43,599 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label25.c
[2023-04-01 03:30:43,613 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 03:30:43,613 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 03:30:43,666 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 03:30:43,671 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;@19adfba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 03:30:43,671 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 03:30:43,678 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 03:30:43,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1652
[2023-04-01 03:30:43,753 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:30:43,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:43,756 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:30:43,762 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:30:43,763 INFO  L85        PathProgramCache]: Analyzing trace with hash 1963678051, now seen corresponding path program 1 times
[2023-04-01 03:30:43,770 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:30:43,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988881329]
[2023-04-01 03:30:43,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:30:43,771 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:30:44,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:30:49,726 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 03:30:49,726 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:30:49,727 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988881329]
[2023-04-01 03:30:49,727 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988881329] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:30:49,728 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:30:49,728 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 03:30:49,729 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198368855]
[2023-04-01 03:30:49,729 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:30:49,735 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 03:30:49,736 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:30:49,766 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 03:30:49,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 03:30:49,772 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 03:30:55,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:30:55,128 INFO  L93              Difference]: Finished difference Result 5031 states and 9947 transitions.
[2023-04-01 03:30:55,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 03:30:55,134 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 03:30:55,140 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:30:55,168 INFO  L225             Difference]: With dead ends: 5031
[2023-04-01 03:30:55,168 INFO  L226             Difference]: Without dead ends: 3347
[2023-04-01 03:30:55,177 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 03:30:55,179 INFO  L413           NwaCegarLoop]: 481 mSDtfsCounter, 448 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4783 mSolverCounterSat, 2295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 7078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2295 IncrementalHoareTripleChecker+Valid, 4783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-04-01 03:30:55,180 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 529 Invalid, 7078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2295 Valid, 4783 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-04-01 03:30:55,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3347 states.
[2023-04-01 03:30:55,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347.
[2023-04-01 03:30:55,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3347 states, 3311 states have (on average 1.8302627604953186) internal successors, (6060), 3311 states have internal predecessors, (6060), 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 03:30:55,316 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 6111 transitions.
[2023-04-01 03:30:55,318 INFO  L78                 Accepts]: Start accepts. Automaton has 3347 states and 6111 transitions. Word has length 1651
[2023-04-01 03:30:55,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:30:55,320 INFO  L495      AbstractCegarLoop]: Abstraction has 3347 states and 6111 transitions.
[2023-04-01 03:30:55,321 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 03:30:55,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 3347 states and 6111 transitions.
[2023-04-01 03:30:55,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1667
[2023-04-01 03:30:55,373 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:30:55,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:55,375 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 03:30:55,375 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:30:55,375 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:30:55,376 INFO  L85        PathProgramCache]: Analyzing trace with hash -43293419, now seen corresponding path program 1 times
[2023-04-01 03:30:55,376 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:30:55,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4110926]
[2023-04-01 03:30:55,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:30:55,376 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:30:55,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:30:57,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:30:57,483 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:30:57,484 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4110926]
[2023-04-01 03:30:57,484 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4110926] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:30:57,484 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:30:57,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-01 03:30:57,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858530652]
[2023-04-01 03:30:57,484 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:30:57,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 03:30:57,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:30:57,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 03:30:57,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-01 03:30:57,492 INFO  L87              Difference]: Start difference. First operand 3347 states and 6111 transitions. Second operand  has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 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 03:31:04,139 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:31:04,139 INFO  L93              Difference]: Finished difference Result 10226 states and 18713 transitions.
[2023-04-01 03:31:04,143 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-04-01 03:31:04,144 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 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 1666
[2023-04-01 03:31:04,144 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:31:04,169 INFO  L225             Difference]: With dead ends: 10226
[2023-04-01 03:31:04,169 INFO  L226             Difference]: Without dead ends: 6884
[2023-04-01 03:31:04,179 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 03:31:04,181 INFO  L413           NwaCegarLoop]: 72 mSDtfsCounter, 6821 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 8857 mSolverCounterSat, 3038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6821 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3038 IncrementalHoareTripleChecker+Valid, 8857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-04-01 03:31:04,182 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6821 Valid, 189 Invalid, 11895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3038 Valid, 8857 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-04-01 03:31:04,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6884 states.
[2023-04-01 03:31:04,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 6819.
[2023-04-01 03:31:04,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6819 states, 6705 states have (on average 1.7027591349739) internal successors, (11417), 6711 states have internal predecessors, (11417), 34 states have call successors, (34), 34 states have call predecessors, (34), 79 states have return successors, (205), 73 states have call predecessors, (205), 33 states have call successors, (205)
[2023-04-01 03:31:04,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6819 states to 6819 states and 11656 transitions.
[2023-04-01 03:31:04,360 INFO  L78                 Accepts]: Start accepts. Automaton has 6819 states and 11656 transitions. Word has length 1666
[2023-04-01 03:31:04,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:31:04,360 INFO  L495      AbstractCegarLoop]: Abstraction has 6819 states and 11656 transitions.
[2023-04-01 03:31:04,361 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 330.6) internal successors, (1653), 4 states have internal predecessors, (1653), 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 03:31:04,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 6819 states and 11656 transitions.
[2023-04-01 03:31:04,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2023-04-01 03:31:04,401 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:31:04,402 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-04-01 03:31:04,402 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 03:31:04,402 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:31:04,404 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:31:04,404 INFO  L85        PathProgramCache]: Analyzing trace with hash 1544510851, now seen corresponding path program 1 times
[2023-04-01 03:31:04,404 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:31:04,404 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306809476]
[2023-04-01 03:31:04,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:31:04,405 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:31:04,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:31:06,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-04-01 03:31:06,005 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:31:06,005 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306809476]
[2023-04-01 03:31:06,005 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306809476] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 03:31:06,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724074260]
[2023-04-01 03:31:06,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:31:06,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 03:31:06,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 03:31:06,009 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-01 03:31:06,009 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-01 03:31:06,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:31:06,519 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-04-01 03:31:06,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 03:31:06,709 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-04-01 03:31:06,709 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-04-01 03:31:06,709 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724074260] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:31:06,711 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-04-01 03:31:06,711 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2023-04-01 03:31:06,712 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123159634]
[2023-04-01 03:31:06,712 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:31:06,715 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 03:31:06,715 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:31:06,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 03:31:06,718 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2023-04-01 03:31:06,718 INFO  L87              Difference]: Start difference. First operand 6819 states and 11656 transitions. Second operand  has 5 states, 5 states have (on average 333.2) internal successors, (1666), 4 states have internal predecessors, (1666), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 03:31:12,604 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:31:12,604 INFO  L93              Difference]: Finished difference Result 17399 states and 29531 transitions.
[2023-04-01 03:31:12,606 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 03:31:12,607 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 333.2) internal successors, (1666), 4 states have internal predecessors, (1666), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1692
[2023-04-01 03:31:12,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:31:12,641 INFO  L225             Difference]: With dead ends: 17399
[2023-04-01 03:31:12,642 INFO  L226             Difference]: Without dead ends: 10585
[2023-04-01 03:31:12,654 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 1691 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2023-04-01 03:31:12,655 INFO  L413           NwaCegarLoop]: 87 mSDtfsCounter, 5626 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 9881 mSolverCounterSat, 1740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5626 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 11621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1740 IncrementalHoareTripleChecker+Valid, 9881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-04-01 03:31:12,655 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5626 Valid, 210 Invalid, 11621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1740 Valid, 9881 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-04-01 03:31:12,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10585 states.
[2023-04-01 03:31:12,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 10534.
[2023-04-01 03:31:12,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10534 states, 10257 states have (on average 1.5582529004582237) internal successors, (15983), 10281 states have internal predecessors, (15983), 50 states have call successors, (50), 50 states have call predecessors, (50), 226 states have return successors, (733), 202 states have call predecessors, (733), 49 states have call successors, (733)
[2023-04-01 03:31:12,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 16766 transitions.
[2023-04-01 03:31:12,852 INFO  L78                 Accepts]: Start accepts. Automaton has 10534 states and 16766 transitions. Word has length 1692
[2023-04-01 03:31:12,853 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:31:12,853 INFO  L495      AbstractCegarLoop]: Abstraction has 10534 states and 16766 transitions.
[2023-04-01 03:31:12,854 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 333.2) internal successors, (1666), 4 states have internal predecessors, (1666), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 03:31:12,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 10534 states and 16766 transitions.
[2023-04-01 03:31:12,889 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2023-04-01 03:31:12,890 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:31:12,890 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 03:31:12,925 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-04-01 03:31:13,098 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 03:31:13,099 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:31:13,099 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:31:13,099 INFO  L85        PathProgramCache]: Analyzing trace with hash 1370449010, now seen corresponding path program 1 times
[2023-04-01 03:31:13,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:31:13,100 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715780305]
[2023-04-01 03:31:13,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:31:13,100 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:31:13,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:31:14,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:31:14,690 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:31:14,690 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715780305]
[2023-04-01 03:31:14,690 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715780305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:31:14,691 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:31:14,691 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-01 03:31:14,691 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057537572]
[2023-04-01 03:31:14,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:31:14,692 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 03:31:14,693 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:31:14,694 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 03:31:14,694 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-01 03:31:14,695 INFO  L87              Difference]: Start difference. First operand 10534 states and 16766 transitions. Second operand  has 5 states, 5 states have (on average 335.6) internal successors, (1678), 4 states have internal predecessors, (1678), 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 03:31:21,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:31:21,306 INFO  L93              Difference]: Finished difference Result 32426 states and 54396 transitions.
[2023-04-01 03:31:21,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-04-01 03:31:21,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 335.6) internal successors, (1678), 4 states have internal predecessors, (1678), 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 1691
[2023-04-01 03:31:21,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:31:21,381 INFO  L225             Difference]: With dead ends: 32426
[2023-04-01 03:31:21,381 INFO  L226             Difference]: Without dead ends: 21897
[2023-04-01 03:31:21,402 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 03:31:21,406 INFO  L413           NwaCegarLoop]: 101 mSDtfsCounter, 5704 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 9494 mSolverCounterSat, 3112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5704 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 12606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3112 IncrementalHoareTripleChecker+Valid, 9494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-04-01 03:31:21,407 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5704 Valid, 244 Invalid, 12606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3112 Valid, 9494 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-04-01 03:31:21,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21897 states.
[2023-04-01 03:31:21,805 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21897 to 21498.
[2023-04-01 03:31:21,828 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21498 states, 20792 states have (on average 1.509234320892651) internal successors, (31380), 20871 states have internal predecessors, (31380), 98 states have call successors, (98), 98 states have call predecessors, (98), 607 states have return successors, (3239), 528 states have call predecessors, (3239), 97 states have call successors, (3239)
[2023-04-01 03:31:21,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21498 states to 21498 states and 34717 transitions.
[2023-04-01 03:31:21,866 INFO  L78                 Accepts]: Start accepts. Automaton has 21498 states and 34717 transitions. Word has length 1691
[2023-04-01 03:31:21,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:31:21,866 INFO  L495      AbstractCegarLoop]: Abstraction has 21498 states and 34717 transitions.
[2023-04-01 03:31:21,867 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 335.6) internal successors, (1678), 4 states have internal predecessors, (1678), 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 03:31:21,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 21498 states and 34717 transitions.
[2023-04-01 03:31:21,926 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2023-04-01 03:31:21,927 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:31:21,927 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 03:31:21,928 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 03:31:21,928 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:31:21,929 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:31:21,931 INFO  L85        PathProgramCache]: Analyzing trace with hash 48985306, now seen corresponding path program 1 times
[2023-04-01 03:31:21,932 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:31:21,932 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590609991]
[2023-04-01 03:31:21,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:31:21,937 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:31:22,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:31:23,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:31:23,304 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:31:23,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590609991]
[2023-04-01 03:31:23,304 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590609991] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:31:23,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:31:23,304 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-01 03:31:23,304 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855077901]
[2023-04-01 03:31:23,304 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:31:23,306 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 03:31:23,306 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:31:23,307 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 03:31:23,307 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-01 03:31:23,307 INFO  L87              Difference]: Start difference. First operand 21498 states and 34717 transitions. Second operand  has 5 states, 5 states have (on average 335.8) internal successors, (1679), 4 states have internal predecessors, (1679), 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)