/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label23.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 05:00:01,900 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 05:00:01,902 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 05:00:01,958 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 05:00:01,959 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 05:00:01,959 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 05:00:01,960 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 05:00:01,964 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 05:00:01,964 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 05:00:01,964 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 05:00:01,965 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 05:00:01,966 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 05:00:01,966 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 05:00:01,967 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 05:00:01,968 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 05:00:01,969 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 05:00:01,969 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 05:00:01,977 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 05:00:01,979 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 05:00:01,980 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 05:00:01,984 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 05:00:01,984 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 05:00:01,985 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 05:00:01,985 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 05:00:01,986 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 05:00:01,986 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 05:00:01,986 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 05:00:01,986 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 05:00:01,987 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 05:00:01,987 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 05:00:01,988 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 05:00:01,988 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 05:00:01,988 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 05:00:01,988 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 05:00:01,989 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 05:00:01,995 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 05:00:02,025 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 05:00:02,025 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 05:00:02,026 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 05:00:02,026 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 05:00:02,026 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 05:00:02,026 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 05:00:02,027 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 05:00:02,027 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 05:00:02,027 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 05:00:02,027 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 05:00:02,027 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 05:00:02,028 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 05:00:02,028 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 05:00:02,029 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:00:02,029 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 05:00:02,029 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 05:00:02,030 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 05:00:02,225 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 05:00:02,243 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 05:00:02,245 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 05:00:02,245 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 05:00:02,246 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 05:00:02,246 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label23.c
[2022-01-10 05:00:02,308 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b09fc1ba/a2aff1f5d2a94e989d527725460c5070/FLAGcfb5bb471
[2022-01-10 05:00:02,711 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 05:00:02,711 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label23.c
[2022-01-10 05:00:02,723 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b09fc1ba/a2aff1f5d2a94e989d527725460c5070/FLAGcfb5bb471
[2022-01-10 05:00:03,055 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b09fc1ba/a2aff1f5d2a94e989d527725460c5070
[2022-01-10 05:00:03,057 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 05:00:03,057 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 05:00:03,058 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 05:00:03,058 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 05:00:03,060 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 05:00:03,061 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,061 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4512dce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03, skipping insertion in model container
[2022-01-10 05:00:03,062 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,066 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 05:00:03,105 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 05:00:03,310 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label23.c[9364,9377]
[2022-01-10 05:00:03,485 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:00:03,494 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 05:00:03,525 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label23.c[9364,9377]
[2022-01-10 05:00:03,599 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:00:03,609 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 05:00:03,609 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03 WrapperNode
[2022-01-10 05:00:03,609 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 05:00:03,610 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 05:00:03,610 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 05:00:03,610 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 05:00:03,614 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,640 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,688 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997
[2022-01-10 05:00:03,688 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 05:00:03,689 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 05:00:03,689 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 05:00:03,689 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 05:00:03,695 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,695 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,702 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,703 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,726 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,746 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,752 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,763 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 05:00:03,764 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 05:00:03,764 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 05:00:03,764 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 05:00:03,765 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (1/1) ...
[2022-01-10 05:00:03,769 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:00:03,778 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 05:00:03,790 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)
[2022-01-10 05:00:03,792 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
[2022-01-10 05:00:03,815 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 05:00:03,815 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 05:00:03,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 05:00:03,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 05:00:03,874 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 05:00:03,875 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 05:00:09,762 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 05:00:09,771 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 05:00:09,771 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 05:00:09,773 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:00:09 BoogieIcfgContainer
[2022-01-10 05:00:09,773 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 05:00:09,774 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 05:00:09,774 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 05:00:09,776 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 05:00:09,776 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:00:03" (1/3) ...
[2022-01-10 05:00:09,776 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84c87fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:00:09, skipping insertion in model container
[2022-01-10 05:00:09,777 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:03" (2/3) ...
[2022-01-10 05:00:09,777 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84c87fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:00:09, skipping insertion in model container
[2022-01-10 05:00:09,777 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:00:09" (3/3) ...
[2022-01-10 05:00:09,778 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem11_label23.c
[2022-01-10 05:00:09,781 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 05:00:09,781 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 05:00:09,808 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 05:00:09,812 INFO  L339      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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 05:00:09,812 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 05:00:09,824 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:09,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2022-01-10 05:00:09,829 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:09,830 INFO  L514         BasicCegarLoop]: 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]
[2022-01-10 05:00:09,830 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:09,833 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:09,833 INFO  L85        PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times
[2022-01-10 05:00:09,842 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:09,842 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691729798]
[2022-01-10 05:00:09,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:09,843 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:09,843 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:09,844 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:09,846 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 05:00:09,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:09,908 INFO  L263         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:00:09,912 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:10,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:10,188 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:10,189 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:10,189 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691729798]
[2022-01-10 05:00:10,189 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [691729798] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:10,189 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:10,189 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:00:10,191 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494033240]
[2022-01-10 05:00:10,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:10,193 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:10,194 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:10,237 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:10,237 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:10,239 INFO  L87              Difference]: Start difference. First operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:17,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:17,597 INFO  L93              Difference]: Finished difference Result 764 states and 1354 transitions.
[2022-01-10 05:00:17,605 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:17,606 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65
[2022-01-10 05:00:17,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:17,615 INFO  L225             Difference]: With dead ends: 764
[2022-01-10 05:00:17,615 INFO  L226             Difference]: Without dead ends: 417
[2022-01-10 05:00:17,622 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:17,626 INFO  L933         BasicCegarLoop]: 170 mSDtfsCounter, 152 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:17,628 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 193 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2022-01-10 05:00:17,641 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 417 states.
[2022-01-10 05:00:17,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408.
[2022-01-10 05:00:17,681 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 408 states, 407 states have (on average 1.484029484029484) internal successors, (604), 407 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:17,682 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 604 transitions.
[2022-01-10 05:00:17,683 INFO  L78                 Accepts]: Start accepts. Automaton has 408 states and 604 transitions. Word has length 65
[2022-01-10 05:00:17,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:17,683 INFO  L470      AbstractCegarLoop]: Abstraction has 408 states and 604 transitions.
[2022-01-10 05:00:17,683 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:17,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 408 states and 604 transitions.
[2022-01-10 05:00:17,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2022-01-10 05:00:17,686 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:17,687 INFO  L514         BasicCegarLoop]: 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, 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]
[2022-01-10 05:00:17,695 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2022-01-10 05:00:17,889 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:00:17,889 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:17,892 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:17,892 INFO  L85        PathProgramCache]: Analyzing trace with hash -566112933, now seen corresponding path program 1 times
[2022-01-10 05:00:17,893 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:17,893 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270914293]
[2022-01-10 05:00:17,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:17,893 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:17,894 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:17,904 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:17,905 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 05:00:17,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:17,978 INFO  L263         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 05:00:17,981 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:18,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:18,435 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:18,435 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:18,435 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270914293]
[2022-01-10 05:00:18,435 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270914293] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:18,435 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:18,435 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:00:18,435 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827212045]
[2022-01-10 05:00:18,435 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:18,436 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:18,436 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:18,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:18,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:18,437 INFO  L87              Difference]: Start difference. First operand 408 states and 604 transitions. Second operand  has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:24,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:24,333 INFO  L93              Difference]: Finished difference Result 1001 states and 1456 transitions.
[2022-01-10 05:00:24,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:24,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131
[2022-01-10 05:00:24,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:24,343 INFO  L225             Difference]: With dead ends: 1001
[2022-01-10 05:00:24,343 INFO  L226             Difference]: Without dead ends: 595
[2022-01-10 05:00:24,343 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:24,344 INFO  L933         BasicCegarLoop]: 154 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:24,344 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 175 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2022-01-10 05:00:24,345 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 595 states.
[2022-01-10 05:00:24,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 592.
[2022-01-10 05:00:24,356 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 592 states, 591 states have (on average 1.3637901861252115) internal successors, (806), 591 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:24,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 806 transitions.
[2022-01-10 05:00:24,357 INFO  L78                 Accepts]: Start accepts. Automaton has 592 states and 806 transitions. Word has length 131
[2022-01-10 05:00:24,357 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:24,357 INFO  L470      AbstractCegarLoop]: Abstraction has 592 states and 806 transitions.
[2022-01-10 05:00:24,357 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:24,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 592 states and 806 transitions.
[2022-01-10 05:00:24,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2022-01-10 05:00:24,362 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:24,362 INFO  L514         BasicCegarLoop]: 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, 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]
[2022-01-10 05:00:24,375 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 05:00:24,572 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:00:24,572 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:24,572 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:24,573 INFO  L85        PathProgramCache]: Analyzing trace with hash 402383397, now seen corresponding path program 1 times
[2022-01-10 05:00:24,573 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:24,573 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374708004]
[2022-01-10 05:00:24,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:24,574 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:24,574 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:24,575 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:24,576 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 05:00:24,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:24,664 INFO  L263         TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:00:24,667 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:24,922 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:24,922 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:24,922 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:24,922 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374708004]
[2022-01-10 05:00:24,923 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374708004] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:24,923 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:24,923 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:00:24,923 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426520585]
[2022-01-10 05:00:24,923 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:24,923 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:24,924 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:24,924 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:24,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:24,924 INFO  L87              Difference]: Start difference. First operand 592 states and 806 transitions. Second operand  has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:31,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:31,575 INFO  L93              Difference]: Finished difference Result 1556 states and 2168 transitions.
[2022-01-10 05:00:31,585 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:31,586 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136
[2022-01-10 05:00:31,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:31,589 INFO  L225             Difference]: With dead ends: 1556
[2022-01-10 05:00:31,589 INFO  L226             Difference]: Without dead ends: 966
[2022-01-10 05:00:31,590 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:31,590 INFO  L933         BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:31,591 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2022-01-10 05:00:31,592 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 966 states.
[2022-01-10 05:00:31,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966.
[2022-01-10 05:00:31,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 966 states, 965 states have (on average 1.2870466321243523) internal successors, (1242), 965 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:31,605 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1242 transitions.
[2022-01-10 05:00:31,605 INFO  L78                 Accepts]: Start accepts. Automaton has 966 states and 1242 transitions. Word has length 136
[2022-01-10 05:00:31,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:31,606 INFO  L470      AbstractCegarLoop]: Abstraction has 966 states and 1242 transitions.
[2022-01-10 05:00:31,606 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:31,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 966 states and 1242 transitions.
[2022-01-10 05:00:31,608 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 193
[2022-01-10 05:00:31,608 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:31,609 INFO  L514         BasicCegarLoop]: 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, 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]
[2022-01-10 05:00:31,619 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 05:00:31,816 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:00:31,818 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:31,818 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:31,818 INFO  L85        PathProgramCache]: Analyzing trace with hash -144928379, now seen corresponding path program 1 times
[2022-01-10 05:00:31,819 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:31,820 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426298820]
[2022-01-10 05:00:31,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:31,820 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:31,820 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:31,821 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:31,822 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 05:00:31,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:31,886 INFO  L263         TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:00:31,896 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:32,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:32,155 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:32,155 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:32,156 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426298820]
[2022-01-10 05:00:32,156 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426298820] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:32,156 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:32,156 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 05:00:32,156 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095533152]
[2022-01-10 05:00:32,156 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:32,157 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:32,157 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:32,157 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:32,157 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:32,157 INFO  L87              Difference]: Start difference. First operand 966 states and 1242 transitions. Second operand  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:38,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:00:38,904 INFO  L93              Difference]: Finished difference Result 2130 states and 2853 transitions.
[2022-01-10 05:00:38,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:00:38,909 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192
[2022-01-10 05:00:38,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:00:38,913 INFO  L225             Difference]: With dead ends: 2130
[2022-01-10 05:00:38,913 INFO  L226             Difference]: Without dead ends: 1350
[2022-01-10 05:00:38,916 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:38,917 INFO  L933         BasicCegarLoop]: 316 mSDtfsCounter, 140 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:00:38,917 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2022-01-10 05:00:38,918 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1350 states.
[2022-01-10 05:00:38,929 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1342.
[2022-01-10 05:00:38,931 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1342 states, 1341 states have (on average 1.2647278150633856) internal successors, (1696), 1341 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:38,933 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1696 transitions.
[2022-01-10 05:00:38,933 INFO  L78                 Accepts]: Start accepts. Automaton has 1342 states and 1696 transitions. Word has length 192
[2022-01-10 05:00:38,934 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:00:38,934 INFO  L470      AbstractCegarLoop]: Abstraction has 1342 states and 1696 transitions.
[2022-01-10 05:00:38,935 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:00:38,935 INFO  L276                IsEmpty]: Start isEmpty. Operand 1342 states and 1696 transitions.
[2022-01-10 05:00:38,940 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 247
[2022-01-10 05:00:38,941 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:38,941 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-01-10 05:00:38,950 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 05:00:39,148 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:00:39,148 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:39,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:39,149 INFO  L85        PathProgramCache]: Analyzing trace with hash 71089053, now seen corresponding path program 1 times
[2022-01-10 05:00:39,150 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:39,150 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348170488]
[2022-01-10 05:00:39,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:39,150 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:39,150 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:39,151 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:00:39,151 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 05:00:39,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:39,281 INFO  L263         TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 05:00:39,284 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:40,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 125 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:40,317 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 05:00:42,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:00:42,425 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:42,425 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348170488]
[2022-01-10 05:00:42,425 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348170488] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 05:00:42,425 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 05:00:42,425 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2022-01-10 05:00:42,425 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338895069]
[2022-01-10 05:00:42,425 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:42,426 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:42,426 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:42,426 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:42,426 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 05:00:42,427 INFO  L87              Difference]: Start difference. First operand 1342 states and 1696 transitions. Second operand  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:01:04,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:01:04,827 INFO  L93              Difference]: Finished difference Result 2309 states and 3082 transitions.
[2022-01-10 05:01:04,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:01:04,833 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246
[2022-01-10 05:01:04,834 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:01:04,838 INFO  L225             Difference]: With dead ends: 2309
[2022-01-10 05:01:04,839 INFO  L226             Difference]: Without dead ends: 1711
[2022-01-10 05:01:04,839 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 05:01:04,840 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time
[2022-01-10 05:01:04,840 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time]
[2022-01-10 05:01:04,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1711 states.
[2022-01-10 05:01:04,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711.
[2022-01-10 05:01:04,857 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1711 states, 1710 states have (on average 1.2923976608187135) internal successors, (2210), 1710 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:01:04,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2210 transitions.
[2022-01-10 05:01:04,859 INFO  L78                 Accepts]: Start accepts. Automaton has 1711 states and 2210 transitions. Word has length 246
[2022-01-10 05:01:04,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:01:04,860 INFO  L470      AbstractCegarLoop]: Abstraction has 1711 states and 2210 transitions.
[2022-01-10 05:01:04,860 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 05:01:04,860 INFO  L276                IsEmpty]: Start isEmpty. Operand 1711 states and 2210 transitions.
[2022-01-10 05:01:04,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 258
[2022-01-10 05:01:04,862 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:01:04,862 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2022-01-10 05:01:04,875 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-01-10 05:01:05,071 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 05:01:05,072 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:01:05,072 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:01:05,072 INFO  L85        PathProgramCache]: Analyzing trace with hash 1990113089, now seen corresponding path program 1 times
[2022-01-10 05:01:05,073 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:01:05,073 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228567867]
[2022-01-10 05:01:05,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:01:05,073 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:01:05,074 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:01:05,074 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 05:01:05,076 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-01-10 05:01:05,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:01:05,195 INFO  L263         TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 05:01:05,198 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:01:06,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:01:06,958 INFO  L328         TraceCheckSpWp]: Computing backward predicates...