/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_label30.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 05:00:49,305 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 05:00:49,307 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 05:00:49,370 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 05:00:49,370 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 05:00:49,371 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 05:00:49,372 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 05:00:49,374 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 05:00:49,392 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 05:00:49,392 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 05:00:49,393 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 05:00:49,394 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 05:00:49,394 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 05:00:49,395 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 05:00:49,395 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 05:00:49,396 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 05:00:49,397 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 05:00:49,398 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 05:00:49,399 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 05:00:49,400 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 05:00:49,400 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 05:00:49,402 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 05:00:49,403 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 05:00:49,403 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 05:00:49,403 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 05:00:49,404 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 05:00:49,404 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 05:00:49,404 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 05:00:49,405 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 05:00:49,405 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 05:00:49,406 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 05:00:49,406 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 05:00:49,406 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 05:00:49,407 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 05:00:49,407 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 05:00:49,408 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 05:00:49,410 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 05:00:49,423 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 05:00:49,426 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 05:00:49,426 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 05:00:49,426 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 05:00:49,427 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 05:00:49,427 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 05:00:49,427 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 05:00:49,427 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 05:00:49,428 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 05:00:49,428 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 05:00:49,428 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 05:00:49,428 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 05:00:49,429 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 05:00:49,429 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:00:49,430 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 05:00:49,430 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 05:00:49,431 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 05:00:49,431 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 05:00:49,642 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 05:00:49,656 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 05:00:49,658 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 05:00:49,658 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 05:00:49,659 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 05:00:49,660 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c
[2022-01-10 05:00:49,700 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77d9f46b/81e1f2e937c94a029a6688c3f15ab0c0/FLAG083fde683
[2022-01-10 05:00:50,109 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 05:00:50,109 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30.c
[2022-01-10 05:00:50,127 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77d9f46b/81e1f2e937c94a029a6688c3f15ab0c0/FLAG083fde683
[2022-01-10 05:00:50,438 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77d9f46b/81e1f2e937c94a029a6688c3f15ab0c0
[2022-01-10 05:00:50,442 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 05:00:50,444 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 05:00:50,447 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 05:00:50,448 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 05:00:50,451 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 05:00:50,451 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:50" (1/1) ...
[2022-01-10 05:00:50,453 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2bf337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:50, skipping insertion in model container
[2022-01-10 05:00:50,453 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:00:50" (1/1) ...
[2022-01-10 05:00:50,458 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 05:00:50,548 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 05:00:50,744 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_label30.c[4279,4292]
[2022-01-10 05:00:50,954 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:00:50,963 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 05:00:50,980 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_label30.c[4279,4292]
[2022-01-10 05:00:51,112 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:00:51,127 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 05:00:51,127 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51 WrapperNode
[2022-01-10 05:00:51,127 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 05:00:51,128 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 05:00:51,128 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 05:00:51,128 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 05:00:51,133 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,159 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,214 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997
[2022-01-10 05:00:51,214 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 05:00:51,215 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 05:00:51,215 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 05:00:51,215 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 05:00:51,222 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,222 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,233 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,233 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,261 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,280 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,285 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,295 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 05:00:51,296 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 05:00:51,296 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 05:00:51,296 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 05:00:51,298 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (1/1) ...
[2022-01-10 05:00:51,303 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:00:51,311 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 05:00:51,335 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 05:00:51,341 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 05:00:51,363 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 05:00:51,364 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 05:00:51,364 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 05:00:51,364 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 05:00:51,419 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 05:00:51,420 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 05:00:57,516 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 05:00:57,524 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 05:00:57,524 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 05:00:57,525 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:00:57 BoogieIcfgContainer
[2022-01-10 05:00:57,525 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 05:00:57,527 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 05:00:57,527 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 05:00:57,532 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 05:00:57,532 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:00:50" (1/3) ...
[2022-01-10 05:00:57,533 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f867bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:00:57, skipping insertion in model container
[2022-01-10 05:00:57,533 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:00:51" (2/3) ...
[2022-01-10 05:00:57,533 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f867bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:00:57, skipping insertion in model container
[2022-01-10 05:00:57,533 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:00:57" (3/3) ...
[2022-01-10 05:00:57,534 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem11_label30.c
[2022-01-10 05:00:57,542 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 05:00:57,542 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 05:00:57,590 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 05:00:57,599 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 05:00:57,599 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 05:00:57,620 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 05:00:57,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 05:00:57,626 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:00:57,626 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]
[2022-01-10 05:00:57,627 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:00:57,631 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:00:57,631 INFO  L85        PathProgramCache]: Analyzing trace with hash -748286455, now seen corresponding path program 1 times
[2022-01-10 05:00:57,645 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:00:57,646 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904267708]
[2022-01-10 05:00:57,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:00:57,646 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:00:57,647 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:00:57,648 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 05:00:57,649 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 05:00:57,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:00:57,733 INFO  L263         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:00:57,736 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:00:57,904 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 05:00:57,904 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:00:57,905 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:00:57,905 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904267708]
[2022-01-10 05:00:57,906 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904267708] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:00:57,906 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:00:57,906 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:00:57,907 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585806166]
[2022-01-10 05:00:57,908 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:00:57,911 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:00:57,911 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:00:57,976 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:00:57,977 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:00:57,980 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 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 05:01:06,039 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:01:06,039 INFO  L93              Difference]: Finished difference Result 758 states and 1342 transitions.
[2022-01-10 05:01:06,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:01:06,052 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29
[2022-01-10 05:01:06,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:01:06,071 INFO  L225             Difference]: With dead ends: 758
[2022-01-10 05:01:06,071 INFO  L226             Difference]: Without dead ends: 410
[2022-01-10 05:01:06,088 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 05:01:06,090 INFO  L933         BasicCegarLoop]: 188 mSDtfsCounter, 196 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2022-01-10 05:01:06,093 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 220 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2022-01-10 05:01:06,123 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 410 states.
[2022-01-10 05:01:06,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410.
[2022-01-10 05:01:06,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 410 states, 409 states have (on average 1.4572127139364304) internal successors, (596), 409 states have internal predecessors, (596), 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 05:01:06,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 596 transitions.
[2022-01-10 05:01:06,199 INFO  L78                 Accepts]: Start accepts. Automaton has 410 states and 596 transitions. Word has length 29
[2022-01-10 05:01:06,199 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:01:06,199 INFO  L470      AbstractCegarLoop]: Abstraction has 410 states and 596 transitions.
[2022-01-10 05:01:06,199 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 05:01:06,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 410 states and 596 transitions.
[2022-01-10 05:01:06,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-01-10 05:01:06,203 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:01:06,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:06,220 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 05:01:06,411 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 05:01:06,411 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:01:06,413 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:01:06,413 INFO  L85        PathProgramCache]: Analyzing trace with hash -618924976, now seen corresponding path program 1 times
[2022-01-10 05:01:06,414 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:01:06,414 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238777540]
[2022-01-10 05:01:06,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:01:06,414 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:01:06,415 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:01:06,417 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 05:01:06,418 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 05:01:06,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:01:06,502 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:01:06,504 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:01:06,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:01:06,857 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:01:06,857 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:01:06,857 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238777540]
[2022-01-10 05:01:06,857 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238777540] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:01:06,857 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:01:06,857 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:01:06,857 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319017096]
[2022-01-10 05:01:06,858 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:01:06,858 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:01:06,859 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:01:06,859 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:01:06,859 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:01:06,859 INFO  L87              Difference]: Start difference. First operand 410 states and 596 transitions. Second operand  has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 05:01:15,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:01:15,572 INFO  L93              Difference]: Finished difference Result 1202 states and 1754 transitions.
[2022-01-10 05:01:15,578 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:01:15,578 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 97
[2022-01-10 05:01:15,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:01:15,582 INFO  L225             Difference]: With dead ends: 1202
[2022-01-10 05:01:15,583 INFO  L226             Difference]: Without dead ends: 794
[2022-01-10 05:01:15,583 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 05:01:15,584 INFO  L933         BasicCegarLoop]: 167 mSDtfsCounter, 133 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:01:15,585 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 186 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2022-01-10 05:01:15,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 794 states.
[2022-01-10 05:01:15,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 782.
[2022-01-10 05:01:15,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 782 states, 781 states have (on average 1.3482714468629962) internal successors, (1053), 781 states have internal predecessors, (1053), 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 05:01:15,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1053 transitions.
[2022-01-10 05:01:15,613 INFO  L78                 Accepts]: Start accepts. Automaton has 782 states and 1053 transitions. Word has length 97
[2022-01-10 05:01:15,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:01:15,614 INFO  L470      AbstractCegarLoop]: Abstraction has 782 states and 1053 transitions.
[2022-01-10 05:01:15,614 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 05:01:15,614 INFO  L276                IsEmpty]: Start isEmpty. Operand 782 states and 1053 transitions.
[2022-01-10 05:01:15,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-10 05:01:15,615 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:01:15,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:15,624 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 05:01:15,823 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 05:01:15,824 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:01:15,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:01:15,825 INFO  L85        PathProgramCache]: Analyzing trace with hash 1540494948, now seen corresponding path program 1 times
[2022-01-10 05:01:15,826 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:01:15,826 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118484510]
[2022-01-10 05:01:15,826 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:01:15,826 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:01:15,826 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:01:15,827 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 05:01:15,829 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 05:01:15,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:01:15,895 INFO  L263         TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:01:15,897 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:01:16,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:01:16,107 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:01:16,108 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:01:16,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118484510]
[2022-01-10 05:01:16,108 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118484510] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:01:16,108 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:01:16,108 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:01:16,108 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528590866]
[2022-01-10 05:01:16,108 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:01:16,109 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:01:16,109 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:01:16,109 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:01:16,109 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:01:16,109 INFO  L87              Difference]: Start difference. First operand 782 states and 1053 transitions. Second operand  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:01:23,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:01:23,274 INFO  L93              Difference]: Finished difference Result 1931 states and 2546 transitions.
[2022-01-10 05:01:23,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:01:23,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 105
[2022-01-10 05:01:23,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:01:23,298 INFO  L225             Difference]: With dead ends: 1931
[2022-01-10 05:01:23,298 INFO  L226             Difference]: Without dead ends: 1151
[2022-01-10 05:01:23,300 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 05:01:23,301 INFO  L933         BasicCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2022-01-10 05:01:23,301 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 194 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2022-01-10 05:01:23,303 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1151 states.
[2022-01-10 05:01:23,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1150.
[2022-01-10 05:01:23,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1150 states, 1149 states have (on average 1.257615317667537) internal successors, (1445), 1149 states have internal predecessors, (1445), 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 05:01:23,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1445 transitions.
[2022-01-10 05:01:23,352 INFO  L78                 Accepts]: Start accepts. Automaton has 1150 states and 1445 transitions. Word has length 105
[2022-01-10 05:01:23,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:01:23,353 INFO  L470      AbstractCegarLoop]: Abstraction has 1150 states and 1445 transitions.
[2022-01-10 05:01:23,353 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:01:23,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 1150 states and 1445 transitions.
[2022-01-10 05:01:23,358 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2022-01-10 05:01:23,359 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:01:23,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:23,366 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0
[2022-01-10 05:01:23,566 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 05:01:23,567 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:01:23,567 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:01:23,567 INFO  L85        PathProgramCache]: Analyzing trace with hash 786326133, now seen corresponding path program 1 times
[2022-01-10 05:01:23,569 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:01:23,569 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265875813]
[2022-01-10 05:01:23,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:01:23,569 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:01:23,570 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:01:23,570 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 05:01:23,577 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 05:01:23,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:01:23,637 INFO  L263         TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 05:01:23,640 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:01:24,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:01:24,011 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 05:01:24,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:01:24,476 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:01:24,476 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265875813]
[2022-01-10 05:01:24,476 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [265875813] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 05:01:24,476 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 05:01:24,476 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5
[2022-01-10 05:01:24,476 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940227100]
[2022-01-10 05:01:24,476 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 05:01:24,477 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 05:01:24,477 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:01:24,477 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 05:01:24,477 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-01-10 05:01:24,478 INFO  L87              Difference]: Start difference. First operand 1150 states and 1445 transitions. Second operand  has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 5 states have internal predecessors, (311), 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 05:01:59,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:01:59,786 INFO  L93              Difference]: Finished difference Result 3072 states and 4311 transitions.
[2022-01-10 05:01:59,786 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-10 05:01:59,787 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 5 states have internal predecessors, (311), 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 156
[2022-01-10 05:01:59,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:01:59,794 INFO  L225             Difference]: With dead ends: 3072
[2022-01-10 05:01:59,794 INFO  L226             Difference]: Without dead ends: 2666
[2022-01-10 05:01:59,795 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 05:01:59,796 INFO  L933         BasicCegarLoop]: 38 mSDtfsCounter, 1050 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time
[2022-01-10 05:01:59,796 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 135 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time]
[2022-01-10 05:01:59,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2666 states.
[2022-01-10 05:01:59,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2283.
[2022-01-10 05:01:59,823 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2283 states, 2282 states have (on average 1.2865907099035934) internal successors, (2936), 2282 states have internal predecessors, (2936), 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 05:01:59,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2936 transitions.
[2022-01-10 05:01:59,826 INFO  L78                 Accepts]: Start accepts. Automaton has 2283 states and 2936 transitions. Word has length 156
[2022-01-10 05:01:59,827 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:01:59,827 INFO  L470      AbstractCegarLoop]: Abstraction has 2283 states and 2936 transitions.
[2022-01-10 05:01:59,827 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 5 states have internal predecessors, (311), 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 05:01:59,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 2283 states and 2936 transitions.
[2022-01-10 05:01:59,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2022-01-10 05:01:59,829 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:01:59,829 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, 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]
[2022-01-10 05:01:59,836 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0
[2022-01-10 05:02:00,035 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 05:02:00,036 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:00,036 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:00,036 INFO  L85        PathProgramCache]: Analyzing trace with hash -1505517997, now seen corresponding path program 1 times
[2022-01-10 05:02:00,037 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:00,037 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783192942]
[2022-01-10 05:02:00,037 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:00,037 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:00,038 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:00,038 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 05:02:00,040 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 05:02:00,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:00,186 INFO  L263         TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:02:00,189 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:02:00,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:02:00,503 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:02:00,503 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:02:00,503 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783192942]
[2022-01-10 05:02:00,504 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [783192942] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:02:00,504 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:02:00,504 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 05:02:00,504 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541660917]
[2022-01-10 05:02:00,504 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:02:00,504 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:02:00,504 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:02:00,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:02:00,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:02:00,505 INFO  L87              Difference]: Start difference. First operand 2283 states and 2936 transitions. Second operand  has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 05:02:07,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:02:07,226 INFO  L93              Difference]: Finished difference Result 5133 states and 6837 transitions.
[2022-01-10 05:02:07,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:02:07,226 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 209
[2022-01-10 05:02:07,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:02:07,235 INFO  L225             Difference]: With dead ends: 5133
[2022-01-10 05:02:07,236 INFO  L226             Difference]: Without dead ends: 3220
[2022-01-10 05:02:07,238 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 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 05:02:07,240 INFO  L933         BasicCegarLoop]: 325 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:02:07,241 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 345 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2022-01-10 05:02:07,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3220 states.
[2022-01-10 05:02:07,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3208.
[2022-01-10 05:02:07,279 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3208 states, 3207 states have (on average 1.263797942001871) internal successors, (4053), 3207 states have internal predecessors, (4053), 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 05:02:07,283 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 4053 transitions.
[2022-01-10 05:02:07,284 INFO  L78                 Accepts]: Start accepts. Automaton has 3208 states and 4053 transitions. Word has length 209
[2022-01-10 05:02:07,285 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:02:07,285 INFO  L470      AbstractCegarLoop]: Abstraction has 3208 states and 4053 transitions.
[2022-01-10 05:02:07,285 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 05:02:07,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 3208 states and 4053 transitions.
[2022-01-10 05:02:07,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2022-01-10 05:02:07,287 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:02:07,287 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, 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]
[2022-01-10 05:02:07,298 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 05:02:07,496 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 05:02:07,496 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:02:07,497 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:02:07,498 INFO  L85        PathProgramCache]: Analyzing trace with hash 327026253, now seen corresponding path program 1 times
[2022-01-10 05:02:07,498 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:02:07,499 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998809036]
[2022-01-10 05:02:07,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:02:07,499 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:02:07,499 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:02:07,500 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 05:02:07,501 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 05:02:07,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:02:07,629 INFO  L263         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 05:02:07,632 INFO  L286         TraceCheckSpWp]: Computing forward predicates...