/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_label50.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 05:24:36,261 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 05:24:36,262 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 05:24:36,330 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 05:24:36,330 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 05:24:36,333 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 05:24:36,336 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 05:24:36,339 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 05:24:36,339 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 05:24:36,341 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 05:24:36,341 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 05:24:36,342 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 05:24:36,343 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 05:24:36,343 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 05:24:36,344 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 05:24:36,345 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 05:24:36,346 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 05:24:36,351 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 05:24:36,358 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 05:24:36,363 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 05:24:36,364 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 05:24:36,365 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 05:24:36,367 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 05:24:36,367 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 05:24:36,368 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 05:24:36,369 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 05:24:36,369 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 05:24:36,369 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 05:24:36,370 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 05:24:36,371 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 05:24:36,371 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 05:24:36,371 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 05:24:36,372 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 05:24:36,372 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 05:24:36,372 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 05:24:36,374 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 05:24:36,374 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 05:24:36,400 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 05:24:36,401 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 05:24:36,401 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 05:24:36,401 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 05:24:36,402 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 05:24:36,402 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 05:24:36,402 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 05:24:36,403 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 05:24:36,403 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 05:24:36,403 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 05:24:36,403 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 05:24:36,403 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 05:24:36,404 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 05:24:36,405 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 05:24:36,405 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 05:24:36,405 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 05:24:36,405 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 05:24:36,405 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 05:24:36,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:24:36,406 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 05:24:36,406 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 05:24:36,406 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 05:24:36,406 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 05:24:36,407 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 05:24:36,407 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 05:24:36,410 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 05:24:36,410 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 05:24:36,410 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 05:24:36,411 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 05:24:36,593 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 05:24:36,610 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 05:24:36,613 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 05:24:36,614 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 05:24:36,614 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 05:24:36,615 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label50.c
[2022-01-10 05:24:36,673 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a5099ee/7a37d2abf9e442e5ad3e6e803fdab629/FLAG612d3145b
[2022-01-10 05:24:37,142 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 05:24:37,142 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label50.c
[2022-01-10 05:24:37,162 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a5099ee/7a37d2abf9e442e5ad3e6e803fdab629/FLAG612d3145b
[2022-01-10 05:24:37,431 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a5099ee/7a37d2abf9e442e5ad3e6e803fdab629
[2022-01-10 05:24:37,433 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 05:24:37,435 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 05:24:37,437 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 05:24:37,438 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 05:24:37,452 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 05:24:37,452 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:24:37" (1/1) ...
[2022-01-10 05:24:37,453 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d95c1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:37, skipping insertion in model container
[2022-01-10 05:24:37,453 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:24:37" (1/1) ...
[2022-01-10 05:24:37,459 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 05:24:37,510 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 05:24:37,663 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_label50.c[1693,1706]
[2022-01-10 05:24:38,093 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:24:38,102 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 05:24:38,121 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_label50.c[1693,1706]
[2022-01-10 05:24:38,301 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 05:24:38,315 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 05:24:38,315 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38 WrapperNode
[2022-01-10 05:24:38,315 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 05:24:38,317 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 05:24:38,317 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 05:24:38,317 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 05:24:38,322 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,360 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,438 INFO  L137                Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1755
[2022-01-10 05:24:38,438 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 05:24:38,439 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 05:24:38,439 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 05:24:38,439 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 05:24:38,446 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,447 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,456 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,456 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,494 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,514 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,533 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,548 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 05:24:38,549 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 05:24:38,549 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 05:24:38,549 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 05:24:38,550 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (1/1) ...
[2022-01-10 05:24:38,556 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 05:24:38,565 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 05:24:38,580 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 05:24:38,603 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 05:24:38,617 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 05:24:38,617 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 05:24:38,617 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 05:24:38,617 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 05:24:38,679 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 05:24:38,680 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 05:24:52,526 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 05:24:52,537 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 05:24:52,538 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 05:24:52,540 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:24:52 BoogieIcfgContainer
[2022-01-10 05:24:52,540 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 05:24:52,541 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 05:24:52,541 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 05:24:52,553 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 05:24:52,553 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:24:37" (1/3) ...
[2022-01-10 05:24:52,554 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:24:52, skipping insertion in model container
[2022-01-10 05:24:52,554 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:24:38" (2/3) ...
[2022-01-10 05:24:52,555 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a29fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:24:52, skipping insertion in model container
[2022-01-10 05:24:52,555 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:24:52" (3/3) ...
[2022-01-10 05:24:52,556 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem15_label50.c
[2022-01-10 05:24:52,562 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 05:24:52,563 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 05:24:52,623 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 05:24:52,637 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 05:24:52,637 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 05:24:52,662 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 05:24:52,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 05:24:52,666 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:24:52,666 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:24:52,667 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:24:52,671 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:24:52,671 INFO  L85        PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times
[2022-01-10 05:24:52,685 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:24:52,685 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874241394]
[2022-01-10 05:24:52,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:24:52,686 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:24:52,686 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:24:52,691 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 05:24:52,723 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 05:24:52,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:24:52,763 INFO  L263         TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:24:52,766 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:24:52,837 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 05:24:52,837 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:24:52,838 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:24:52,838 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874241394]
[2022-01-10 05:24:52,838 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [874241394] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:24:52,838 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:24:52,839 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:24:52,840 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082783220]
[2022-01-10 05:24:52,840 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:24:52,843 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:24:52,843 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:24:52,863 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:24:52,864 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:24:52,867 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:25:08,744 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:25:08,744 INFO  L93              Difference]: Finished difference Result 1179 states and 2143 transitions.
[2022-01-10 05:25:08,745 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:25:08,746 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12
[2022-01-10 05:25:08,747 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:25:08,763 INFO  L225             Difference]: With dead ends: 1179
[2022-01-10 05:25:08,764 INFO  L226             Difference]: Without dead ends: 676
[2022-01-10 05:25:08,767 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 05:25:08,770 INFO  L933         BasicCegarLoop]: 236 mSDtfsCounter, 327 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 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, 15.8s IncrementalHoareTripleChecker+Time
[2022-01-10 05:25:08,771 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 277 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time]
[2022-01-10 05:25:08,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 676 states.
[2022-01-10 05:25:08,847 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 668.
[2022-01-10 05:25:08,849 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 05:25:08,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1052 transitions.
[2022-01-10 05:25:08,852 INFO  L78                 Accepts]: Start accepts. Automaton has 668 states and 1052 transitions. Word has length 12
[2022-01-10 05:25:08,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:25:08,853 INFO  L470      AbstractCegarLoop]: Abstraction has 668 states and 1052 transitions.
[2022-01-10 05:25:08,853 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 05:25:08,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 668 states and 1052 transitions.
[2022-01-10 05:25:08,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2022-01-10 05:25:08,855 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:25:08,855 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:25:08,866 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 05:25:09,063 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 05:25:09,064 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:25:09,064 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:25:09,065 INFO  L85        PathProgramCache]: Analyzing trace with hash 508005558, now seen corresponding path program 1 times
[2022-01-10 05:25:09,066 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:25:09,066 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141751220]
[2022-01-10 05:25:09,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:25:09,066 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:25:09,066 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:25:09,072 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 05:25:09,073 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 05:25:09,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:25:09,146 INFO  L263         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:25:09,148 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:25:09,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:25:09,378 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:25:09,378 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:25:09,379 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141751220]
[2022-01-10 05:25:09,379 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141751220] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:25:09,379 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:25:09,379 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:25:09,379 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691991427]
[2022-01-10 05:25:09,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:25:09,380 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:25:09,380 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:25:09,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:25:09,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:25:09,381 INFO  L87              Difference]: Start difference. First operand 668 states and 1052 transitions. Second operand  has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 05:25:28,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:25:28,204 INFO  L93              Difference]: Finished difference Result 1630 states and 2635 transitions.
[2022-01-10 05:25:28,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:25:28,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78
[2022-01-10 05:25:28,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:25:28,224 INFO  L225             Difference]: With dead ends: 1630
[2022-01-10 05:25:28,225 INFO  L226             Difference]: Without dead ends: 964
[2022-01-10 05:25:28,226 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 05:25:28,227 INFO  L933         BasicCegarLoop]: 301 mSDtfsCounter, 248 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s 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, 18.7s IncrementalHoareTripleChecker+Time
[2022-01-10 05:25:28,227 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 347 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time]
[2022-01-10 05:25:28,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 964 states.
[2022-01-10 05:25:28,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 962.
[2022-01-10 05:25:28,251 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 05:25:28,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1310 transitions.
[2022-01-10 05:25:28,254 INFO  L78                 Accepts]: Start accepts. Automaton has 962 states and 1310 transitions. Word has length 78
[2022-01-10 05:25:28,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:25:28,254 INFO  L470      AbstractCegarLoop]: Abstraction has 962 states and 1310 transitions.
[2022-01-10 05:25:28,255 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 05:25:28,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 962 states and 1310 transitions.
[2022-01-10 05:25:28,256 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2022-01-10 05:25:28,257 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:25:28,257 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 05:25:28,267 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 05:25:28,466 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 05:25:28,467 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:25:28,467 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:25:28,468 INFO  L85        PathProgramCache]: Analyzing trace with hash 1118766380, now seen corresponding path program 1 times
[2022-01-10 05:25:28,468 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:25:28,468 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232985703]
[2022-01-10 05:25:28,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:25:28,469 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:25:28,469 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:25:28,470 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 05:25:28,471 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 05:25:28,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:25:28,523 INFO  L263         TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 05:25:28,527 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:25:28,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:25:28,745 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 05:25:28,745 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 05:25:28,745 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232985703]
[2022-01-10 05:25:28,745 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232985703] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 05:25:28,745 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 05:25:28,745 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 05:25:28,746 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296487417]
[2022-01-10 05:25:28,746 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 05:25:28,746 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 05:25:28,746 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 05:25:28,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 05:25:28,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 05:25:28,747 INFO  L87              Difference]: Start difference. First operand 962 states and 1310 transitions. Second operand  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 05:25:46,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 05:25:46,451 INFO  L93              Difference]: Finished difference Result 1928 states and 2831 transitions.
[2022-01-10 05:25:46,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 05:25:46,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82
[2022-01-10 05:25:46,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 05:25:46,456 INFO  L225             Difference]: With dead ends: 1928
[2022-01-10 05:25:46,456 INFO  L226             Difference]: Without dead ends: 1267
[2022-01-10 05:25:46,457 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 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 05:25:46,458 INFO  L933         BasicCegarLoop]: 279 mSDtfsCounter, 256 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s 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, 17.6s IncrementalHoareTripleChecker+Time
[2022-01-10 05:25:46,459 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 318 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time]
[2022-01-10 05:25:46,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1267 states.
[2022-01-10 05:25:46,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265.
[2022-01-10 05:25:46,484 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 05:25:46,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1649 transitions.
[2022-01-10 05:25:46,487 INFO  L78                 Accepts]: Start accepts. Automaton has 1265 states and 1649 transitions. Word has length 82
[2022-01-10 05:25:46,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 05:25:46,489 INFO  L470      AbstractCegarLoop]: Abstraction has 1265 states and 1649 transitions.
[2022-01-10 05:25:46,489 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 05:25:46,489 INFO  L276                IsEmpty]: Start isEmpty. Operand 1265 states and 1649 transitions.
[2022-01-10 05:25:46,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2022-01-10 05:25:46,498 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 05:25:46,499 INFO  L514         BasicCegarLoop]: trace histogram [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, 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 05:25:46,510 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 05:25:46,707 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 05:25:46,708 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 05:25:46,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 05:25:46,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -1218335183, now seen corresponding path program 1 times
[2022-01-10 05:25:46,710 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 05:25:46,710 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224596067]
[2022-01-10 05:25:46,710 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 05:25:46,710 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 05:25:46,710 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 05:25:46,711 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 05:25:46,713 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 05:25:46,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 05:25:46,813 INFO  L263         TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 05:25:46,817 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 05:25:48,536 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 61 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 05:25:48,536 INFO  L328         TraceCheckSpWp]: Computing backward predicates...