/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/Problem15_label38.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 05:23:26,469 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 05:23:26,492 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2022-01-10 05:23:26,512 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 05:23:26,514 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 05:23:26,516 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 05:23:26,523 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 05:23:26,523 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 05:23:26,524 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 05:23:26,524 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 05:23:26,525 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 05:23:26,525 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 05:23:26,526 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 05:23:26,527 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 05:23:26,528 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 05:23:26,536 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 05:23:26,537 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 05:23:26,538 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 05:23:26,547 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 05:23:26,547 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 05:23:26,548 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 05:23:26,549 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 05:23:26,549 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 05:23:26,549 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 05:23:26,550 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 05:23:26,550 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 05:23:26,550 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 05:23:26,551 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 05:23:26,551 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 05:23:26,551 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 05:23:26,551 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 05:23:26,552 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 05:23:26,554 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 05:23:26,575 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 05:23:26,575 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 05:23:26,575 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 05:23:26,575 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 05:23:26,576 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 05:23:26,576 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 05:23:26,576 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 05:23:26,576 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 05:23:26,577 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 05:23:26,577 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 05:23:26,578 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:23:26,578 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 05:23:26,578 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 05:23:26,579 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 05:23:26,579 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 05:23:26,702 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 05:23:26,716 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 05:23:26,717 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 05:23:26,718 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 05:23:26,718 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 05:23:26,719 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c
[2022-01-10 05:23:26,769 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4/FLAG74ef882d8
[2022-01-10 05:23:27,242 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 05:23:27,243 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label38.c
[2022-01-10 05:23:27,264 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4/FLAG74ef882d8
[2022-01-10 05:23:27,563 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4
[2022-01-10 05:23:27,564 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 05:23:27,565 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 05:23:27,566 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 05:23:27,566 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 05:23:27,568 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 05:23:27,569 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:23:27" (1/1) ...
[2022-01-10 05:23:27,569 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6246b216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:27, skipping insertion in model container
[2022-01-10 05:23:27,570 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:23:27" (1/1) ...
[2022-01-10 05:23:27,574 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 05:23:27,629 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 05:23:27,814 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/Problem15_label38.c[3800,3813]
[2022-01-10 05:23:28,146 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:23:28,154 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 05:23:28,176 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/Problem15_label38.c[3800,3813]
[2022-01-10 05:23:28,304 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:23:28,315 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 05:23:28,315 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28 WrapperNode
[2022-01-10 05:23:28,315 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 05:23:28,316 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 05:23:28,316 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 05:23:28,316 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 05:23:28,320 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,348 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,438 INFO  L137                Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1755
[2022-01-10 05:23:28,438 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 05:23:28,439 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 05:23:28,439 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 05:23:28,439 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 05:23:28,444 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,444 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,453 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,454 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,491 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,508 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,515 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,529 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 05:23:28,529 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 05:23:28,529 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 05:23:28,529 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 05:23:28,530 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ...
[2022-01-10 05:23:28,539 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:23:28,548 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 05:23:28,558 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 05:23:28,585 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 05:23:28,600 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 05:23:28,600 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 05:23:28,600 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 05:23:28,600 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 05:23:28,657 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 05:23:28,658 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 05:23:41,669 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 05:23:41,679 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 05:23:41,679 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 05:23:41,681 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:41 BoogieIcfgContainer
[2022-01-10 05:23:41,681 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 05:23:41,682 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 05:23:41,682 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 05:23:41,690 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 05:23:41,690 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:23:27" (1/3) ...
[2022-01-10 05:23:41,691 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71489483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:41, skipping insertion in model container
[2022-01-10 05:23:41,691 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (2/3) ...
[2022-01-10 05:23:41,691 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71489483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:41, skipping insertion in model container
[2022-01-10 05:23:41,691 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:41" (3/3) ...
[2022-01-10 05:23:41,692 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem15_label38.c
[2022-01-10 05:23:41,696 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 05:23:41,696 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 05:23:41,739 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 05:23:41,744 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 05:23:41,744 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 05:23:41,772 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 05:23:41,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-10 05:23:41,776 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:23:41,776 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]
[2022-01-10 05:23:41,777 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:23:41,780 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:23:41,780 INFO  L85        PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times
[2022-01-10 05:23:41,787 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:23:41,787 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057031866]
[2022-01-10 05:23:41,788 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:23:41,788 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:23:41,788 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:23:41,790 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 05:23:41,798 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 05:23:41,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:23:41,852 INFO  L263         TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:23:41,855 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:23:41,987 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 05:23:41,987 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:23:41,987 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:23:41,988 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057031866]
[2022-01-10 05:23:41,988 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057031866] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:23:41,988 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:23:41,988 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:23:41,989 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141862345]
[2022-01-10 05:23:41,990 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:23:41,992 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:23:41,992 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:23:42,014 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:23:42,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:23:42,017 INFO  L87              Difference]: Start difference. First operand  has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 05:23:58,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:23:58,918 INFO  L93              Difference]: Finished difference Result 1179 states and 2143 transitions.
[2022-01-10 05:23:58,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:23:58,920 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30
[2022-01-10 05:23:58,920 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:23:58,931 INFO  L225             Difference]: With dead ends: 1179
[2022-01-10 05:23:58,931 INFO  L226             Difference]: Without dead ends: 676
[2022-01-10 05:23:58,934 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 05:23:58,936 INFO  L933         BasicCegarLoop]: 236 mSDtfsCounter, 309 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time
[2022-01-10 05:23:58,937 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 277 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time]
[2022-01-10 05:23:58,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 676 states.
[2022-01-10 05:23:58,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 668.
[2022-01-10 05:23:58,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 668 states, 667 states have (on average 1.5772113943028485) internal successors, (1052), 667 states have internal predecessors, (1052), 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 05:23:58,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1052 transitions.
[2022-01-10 05:23:58,988 INFO  L78                 Accepts]: Start accepts. Automaton has 668 states and 1052 transitions. Word has length 30
[2022-01-10 05:23:58,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:23:58,988 INFO  L470      AbstractCegarLoop]: Abstraction has 668 states and 1052 transitions.
[2022-01-10 05:23:58,988 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 05:23:58,988 INFO  L276                IsEmpty]: Start isEmpty. Operand 668 states and 1052 transitions.
[2022-01-10 05:23:58,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2022-01-10 05:23:58,990 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:23:58,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:58,998 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 05:23:59,197 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 05:23:59,197 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:23:59,199 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:23:59,199 INFO  L85        PathProgramCache]: Analyzing trace with hash 1115416254, now seen corresponding path program 1 times
[2022-01-10 05:23:59,200 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:23:59,200 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352304123]
[2022-01-10 05:23:59,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:23:59,200 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:23:59,200 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:23:59,201 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 05:23:59,202 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 05:23:59,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:23:59,261 INFO  L263         TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:23:59,263 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:23:59,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:23:59,517 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:23:59,517 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:23:59,517 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352304123]
[2022-01-10 05:23:59,517 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352304123] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:23:59,517 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:23:59,517 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:23:59,518 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600867366]
[2022-01-10 05:23:59,518 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:23:59,519 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:23:59,519 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:23:59,519 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:23:59,519 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:23:59,519 INFO  L87              Difference]: Start difference. First operand 668 states and 1052 transitions. Second operand  has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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 05:24:20,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:24:20,293 INFO  L93              Difference]: Finished difference Result 1630 states and 2635 transitions.
[2022-01-10 05:24:20,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:24:20,310 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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 96
[2022-01-10 05:24:20,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:24:20,313 INFO  L225             Difference]: With dead ends: 1630
[2022-01-10 05:24:20,313 INFO  L226             Difference]: Without dead ends: 964
[2022-01-10 05:24:20,314 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 05:24:20,315 INFO  L933         BasicCegarLoop]: 301 mSDtfsCounter, 248 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:24:20,316 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 347 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time]
[2022-01-10 05:24:20,317 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 964 states.
[2022-01-10 05:24:20,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 962.
[2022-01-10 05:24:20,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 962 states, 961 states have (on average 1.3631633714880333) internal successors, (1310), 961 states have internal predecessors, (1310), 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 05:24:20,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1310 transitions.
[2022-01-10 05:24:20,344 INFO  L78                 Accepts]: Start accepts. Automaton has 962 states and 1310 transitions. Word has length 96
[2022-01-10 05:24:20,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:24:20,344 INFO  L470      AbstractCegarLoop]: Abstraction has 962 states and 1310 transitions.
[2022-01-10 05:24:20,344 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 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 05:24:20,344 INFO  L276                IsEmpty]: Start isEmpty. Operand 962 states and 1310 transitions.
[2022-01-10 05:24:20,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2022-01-10 05:24:20,346 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:24:20,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:20,358 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 05:24:20,547 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 05:24:20,548 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:24:20,548 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:24:20,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 55311796, now seen corresponding path program 1 times
[2022-01-10 05:24:20,549 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:24:20,549 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507679266]
[2022-01-10 05:24:20,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:24:20,549 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:24:20,549 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:24:20,550 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 05:24:20,551 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 05:24:20,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:24:20,599 INFO  L263         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:24:20,601 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:24:20,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:24:20,828 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:24:20,828 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:24:20,829 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507679266]
[2022-01-10 05:24:20,829 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507679266] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:24:20,829 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:24:20,829 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:24:20,829 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967714791]
[2022-01-10 05:24:20,829 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:24:20,829 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:24:20,830 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:24:20,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:24:20,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:24:20,830 INFO  L87              Difference]: Start difference. First operand 962 states and 1310 transitions. Second operand  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 05:24:40,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:24:40,230 INFO  L93              Difference]: Finished difference Result 1928 states and 2831 transitions.
[2022-01-10 05:24:40,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:24:40,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 100
[2022-01-10 05:24:40,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:24:40,234 INFO  L225             Difference]: With dead ends: 1928
[2022-01-10 05:24:40,234 INFO  L226             Difference]: Without dead ends: 1267
[2022-01-10 05:24:40,235 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 05:24:40,236 INFO  L933         BasicCegarLoop]: 279 mSDtfsCounter, 256 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time
[2022-01-10 05:24:40,236 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 318 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time]
[2022-01-10 05:24:40,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1267 states.
[2022-01-10 05:24:40,257 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265.
[2022-01-10 05:24:40,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1265 states, 1264 states have (on average 1.3045886075949367) internal successors, (1649), 1264 states have internal predecessors, (1649), 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 05:24:40,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1649 transitions.
[2022-01-10 05:24:40,261 INFO  L78                 Accepts]: Start accepts. Automaton has 1265 states and 1649 transitions. Word has length 100
[2022-01-10 05:24:40,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:24:40,261 INFO  L470      AbstractCegarLoop]: Abstraction has 1265 states and 1649 transitions.
[2022-01-10 05:24:40,261 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 05:24:40,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 1265 states and 1649 transitions.
[2022-01-10 05:24:40,265 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2022-01-10 05:24:40,265 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:24:40,265 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, 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]
[2022-01-10 05:24:40,275 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 05:24:40,472 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 05:24:40,472 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:24:40,473 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:24:40,473 INFO  L85        PathProgramCache]: Analyzing trace with hash 437312665, now seen corresponding path program 1 times
[2022-01-10 05:24:40,474 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:24:40,474 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424751459]
[2022-01-10 05:24:40,474 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:24:40,474 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:24:40,474 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:24:40,475 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 05:24:40,477 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 05:24:40,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:24:40,568 INFO  L263         TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 05:24:40,571 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:24:42,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:24:42,303 INFO  L328         TraceCheckSpWp]: Computing backward predicates...