/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/Problem03_label16.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 03:21:05,171 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 03:21:05,173 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 03:21:05,198 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 03:21:05,199 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 03:21:05,200 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 03:21:05,201 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 03:21:05,203 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
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[2023-04-01 03:21:05,205 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 03:21:05,206 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 03:21:05,207 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 03:21:05,207 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 03:21:05,209 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 03:21:05,210 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 03:21:05,211 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 03:21:05,212 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 03:21:05,213 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 03:21:05,214 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 03:21:05,215 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 03:21:05,217 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 03:21:05,218 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 03:21:05,218 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 03:21:05,221 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 03:21:05,223 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 03:21:05,225 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 03:21:05,225 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-01 03:21:05,226 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 03:21:05,227 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 03:21:05,227 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 03:21:05,228 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 03:21:05,229 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 03:21:05,230 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 03:21:05,254 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 03:21:05,255 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 03:21:05,255 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 03:21:05,255 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 03:21:05,256 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 03:21:05,256 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 03:21:05,256 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 03:21:05,257 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 03:21:05,257 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 03:21:05,257 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 03:21:05,257 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 03:21:05,258 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 03:21:05,258 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 03:21:05,258 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 03:21:05,259 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 03:21:05,260 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 03:21:05,260 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 03:21:05,260 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 03:21:05,261 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 03:21:05,261 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 03:21:05,261 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 03:21:05,525 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 03:21:05,558 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 03:21:05,560 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 03:21:05,561 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 03:21:05,565 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 03:21:05,566 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label16.c
[2023-04-01 03:21:06,918 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 03:21:07,175 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 03:21:07,175 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c
[2023-04-01 03:21:07,189 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7aa3e776/2ca34a432c44438aad3a68c8d5e1dcdc/FLAG8ba698d7e
[2023-04-01 03:21:07,203 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7aa3e776/2ca34a432c44438aad3a68c8d5e1dcdc
[2023-04-01 03:21:07,206 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 03:21:07,207 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 03:21:07,211 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 03:21:07,211 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 03:21:07,214 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 03:21:07,214 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:07,216 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dae8b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07, skipping insertion in model container
[2023-04-01 03:21:07,216 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:07,221 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 03:21:07,281 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 03:21:07,688 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/Problem03_label16.c[56490,56503]
[2023-04-01 03:21:07,728 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 03:21:07,739 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 03:21:07,970 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/Problem03_label16.c[56490,56503]
[2023-04-01 03:21:07,980 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 03:21:07,992 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 03:21:07,993 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07 WrapperNode
[2023-04-01 03:21:07,993 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 03:21:07,994 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 03:21:07,994 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 03:21:07,994 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 03:21:08,003 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,003 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,023 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,023 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,058 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,066 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,079 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,089 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,106 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 03:21:08,107 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 03:21:08,107 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 03:21:08,108 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 03:21:08,108 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (1/1) ...
[2023-04-01 03:21:08,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 03:21:08,124 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 03:21:08,171 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 03:21:08,227 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 03:21:08,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 03:21:08,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 03:21:08,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 03:21:08,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-04-01 03:21:08,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 03:21:08,262 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 03:21:08,263 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 03:21:08,263 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 03:21:08,263 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 03:21:08,366 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 03:21:08,368 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 03:21:09,821 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 03:21:10,101 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 03:21:10,101 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 03:21:10,104 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:21:10 BoogieIcfgContainer
[2023-04-01 03:21:10,104 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 03:21:10,107 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 03:21:10,107 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 03:21:10,109 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 03:21:10,109 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:21:07" (1/3) ...
[2023-04-01 03:21:10,112 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20d784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:21:10, skipping insertion in model container
[2023-04-01 03:21:10,112 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:21:07" (2/3) ...
[2023-04-01 03:21:10,112 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20d784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:21:10, skipping insertion in model container
[2023-04-01 03:21:10,112 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:21:10" (3/3) ...
[2023-04-01 03:21:10,113 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem03_label16.c
[2023-04-01 03:21:10,128 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 03:21:10,128 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 03:21:10,188 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 03:21:10,193 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;@3e77f149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 03:21:10,193 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 03:21:10,198 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 158 states, 150 states have (on average 1.9466666666666668) internal successors, (292), 151 states have internal predecessors, (292), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 03:21:10,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2023-04-01 03:21:10,208 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:21:10,208 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]
[2023-04-01 03:21:10,209 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:21:10,212 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:21:10,212 INFO  L85        PathProgramCache]: Analyzing trace with hash 729855828, now seen corresponding path program 1 times
[2023-04-01 03:21:10,219 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:21:10,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592726191]
[2023-04-01 03:21:10,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:21:10,220 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:21:10,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:21:11,113 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 03:21:11,113 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:21:11,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592726191]
[2023-04-01 03:21:11,114 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592726191] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:21:11,115 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:21:11,115 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 03:21:11,116 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146701240]
[2023-04-01 03:21:11,117 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:21:11,122 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 03:21:11,122 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:21:11,156 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 03:21:11,157 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 03:21:11,160 INFO  L87              Difference]: Start difference. First operand  has 158 states, 150 states have (on average 1.9466666666666668) internal successors, (292), 151 states have internal predecessors, (292), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 03:21:11,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:21:11,882 INFO  L93              Difference]: Finished difference Result 462 states and 886 transitions.
[2023-04-01 03:21:11,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 03:21:11,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149
[2023-04-01 03:21:11,885 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:21:11,893 INFO  L225             Difference]: With dead ends: 462
[2023-04-01 03:21:11,893 INFO  L226             Difference]: Without dead ends: 301
[2023-04-01 03:21:11,896 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:21:11,898 INFO  L413           NwaCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-04-01 03:21:11,899 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-04-01 03:21:11,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 301 states.
[2023-04-01 03:21:11,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301.
[2023-04-01 03:21:11,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 301 states, 293 states have (on average 1.7747440273037542) internal successors, (520), 293 states have internal predecessors, (520), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2023-04-01 03:21:11,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 529 transitions.
[2023-04-01 03:21:11,941 INFO  L78                 Accepts]: Start accepts. Automaton has 301 states and 529 transitions. Word has length 149
[2023-04-01 03:21:11,941 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:21:11,941 INFO  L495      AbstractCegarLoop]: Abstraction has 301 states and 529 transitions.
[2023-04-01 03:21:11,942 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 03:21:11,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 301 states and 529 transitions.
[2023-04-01 03:21:11,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2023-04-01 03:21:11,945 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:21:11,945 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-01 03:21:11,945 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 03:21:11,946 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:21:11,946 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:21:11,946 INFO  L85        PathProgramCache]: Analyzing trace with hash -455551565, now seen corresponding path program 1 times
[2023-04-01 03:21:11,946 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:21:11,946 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351584506]
[2023-04-01 03:21:11,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:21:11,947 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:21:12,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:21:12,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:21:12,330 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:21:12,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351584506]
[2023-04-01 03:21:12,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351584506] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:21:12,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:21:12,331 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-04-01 03:21:12,331 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86209629]
[2023-04-01 03:21:12,331 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:21:12,333 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-04-01 03:21:12,334 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:21:12,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-04-01 03:21:12,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-04-01 03:21:12,335 INFO  L87              Difference]: Start difference. First operand 301 states and 529 transitions. Second operand  has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 03:21:13,126 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:21:13,126 INFO  L93              Difference]: Finished difference Result 917 states and 1632 transitions.
[2023-04-01 03:21:13,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-04-01 03:21:13,127 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 161
[2023-04-01 03:21:13,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:21:13,131 INFO  L225             Difference]: With dead ends: 917
[2023-04-01 03:21:13,131 INFO  L226             Difference]: Without dead ends: 621
[2023-04-01 03:21:13,132 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 03:21:13,133 INFO  L413           NwaCegarLoop]: 18 mSDtfsCounter, 494 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-01 03:21:13,134 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 48 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-01 03:21:13,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 621 states.
[2023-04-01 03:21:13,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 607.
[2023-04-01 03:21:13,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 607 states, 589 states have (on average 1.7232597623089982) internal successors, (1015), 595 states have internal predecessors, (1015), 6 states have call successors, (6), 6 states have call predecessors, (6), 11 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26)
[2023-04-01 03:21:13,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1047 transitions.
[2023-04-01 03:21:13,173 INFO  L78                 Accepts]: Start accepts. Automaton has 607 states and 1047 transitions. Word has length 161
[2023-04-01 03:21:13,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:21:13,173 INFO  L495      AbstractCegarLoop]: Abstraction has 607 states and 1047 transitions.
[2023-04-01 03:21:13,174 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 03:21:13,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 607 states and 1047 transitions.
[2023-04-01 03:21:13,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2023-04-01 03:21:13,177 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:21:13,178 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-01 03:21:13,178 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 03:21:13,178 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:21:13,178 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:21:13,178 INFO  L85        PathProgramCache]: Analyzing trace with hash -2038827244, now seen corresponding path program 1 times
[2023-04-01 03:21:13,179 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:21:13,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955167666]
[2023-04-01 03:21:13,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:21:13,179 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:21:13,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:21:13,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:21:13,466 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:21:13,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955167666]
[2023-04-01 03:21:13,466 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955167666] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 03:21:13,467 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 03:21:13,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 03:21:13,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257646679]
[2023-04-01 03:21:13,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 03:21:13,468 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 03:21:13,468 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 03:21:13,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 03:21:13,469 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 03:21:13,469 INFO  L87              Difference]: Start difference. First operand 607 states and 1047 transitions. Second operand  has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 03:21:14,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 03:21:14,026 INFO  L93              Difference]: Finished difference Result 1805 states and 3191 transitions.
[2023-04-01 03:21:14,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 03:21:14,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170
[2023-04-01 03:21:14,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 03:21:14,033 INFO  L225             Difference]: With dead ends: 1805
[2023-04-01 03:21:14,034 INFO  L226             Difference]: Without dead ends: 1203
[2023-04-01 03:21:14,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 03:21:14,036 INFO  L413           NwaCegarLoop]: 261 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-01 03:21:14,037 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 274 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-01 03:21:14,038 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1203 states.
[2023-04-01 03:21:14,059 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203.
[2023-04-01 03:21:14,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1203 states, 1173 states have (on average 1.5720375106564366) internal successors, (1844), 1183 states have internal predecessors, (1844), 10 states have call successors, (10), 10 states have call predecessors, (10), 19 states have return successors, (92), 9 states have call predecessors, (92), 9 states have call successors, (92)
[2023-04-01 03:21:14,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1946 transitions.
[2023-04-01 03:21:14,064 INFO  L78                 Accepts]: Start accepts. Automaton has 1203 states and 1946 transitions. Word has length 170
[2023-04-01 03:21:14,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 03:21:14,065 INFO  L495      AbstractCegarLoop]: Abstraction has 1203 states and 1946 transitions.
[2023-04-01 03:21:14,065 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2023-04-01 03:21:14,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 1203 states and 1946 transitions.
[2023-04-01 03:21:14,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2023-04-01 03:21:14,069 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 03:21:14,070 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:14,070 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 03:21:14,070 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 03:21:14,070 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 03:21:14,071 INFO  L85        PathProgramCache]: Analyzing trace with hash -767372691, now seen corresponding path program 1 times
[2023-04-01 03:21:14,071 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 03:21:14,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593659419]
[2023-04-01 03:21:14,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:21:14,071 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 03:21:14,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:21:14,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:21:14,535 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 03:21:14,536 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593659419]
[2023-04-01 03:21:14,536 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593659419] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 03:21:14,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117937696]
[2023-04-01 03:21:14,537 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 03:21:14,538 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 03:21:14,538 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 03:21:14,555 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 03:21:14,579 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 03:21:14,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 03:21:14,807 INFO  L262         TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-04-01 03:21:14,823 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 03:21:14,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:21:14,958 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-04-01 03:21:15,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 03:21:15,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [117937696] provided 0 perfect and 2 imperfect interpolant sequences
[2023-04-01 03:21:15,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1979184332]
[2023-04-01 03:21:15,098 INFO  L159        IcfgInterpreter]: Started Sifa with 153 locations of interest
[2023-04-01 03:21:15,098 INFO  L166        IcfgInterpreter]: Building call graph
[2023-04-01 03:21:15,104 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-04-01 03:21:15,107 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-04-01 03:21:15,108 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-04-01 03:21:16,094 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 162 for LOIs
[2023-04-01 03:21:26,185 WARN  L223               SmtUtils]: Spent 8.90s on a formula simplification that was a NOOP. DAG size: 962 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)
[2023-04-01 03:22:17,750 WARN  L176   XnfTransformerHelper]: Simplifying disjunction of 24864 conjuctions. This might take some time...