/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 20:57:58,630 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 20:57:58,633 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-23 20:57:58,645 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-23 20:57:58,646 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-23 20:57:58,647 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2019-11-23 20:57:58,660 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-23 20:57:58,661 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-23 20:57:58,662 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-23 20:57:58,664 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2019-11-23 20:57:58,668 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-23 20:57:58,669 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-23 20:57:58,671 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-23 20:57:58,672 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-11-23 20:57:58,679 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-23 20:57:58,682 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-23 20:57:58,699 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 20:57:58,700 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 20:57:58,701 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 20:57:58,701 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 20:57:58,701 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 20:57:58,702 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 20:57:58,702 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 20:57:58,703 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 20:57:58,703 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 20:57:58,703 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 20:57:58,704 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 20:57:58,704 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 20:57:58,704 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 20:57:58,705 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 20:57:58,705 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 20:57:58,705 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 20:57:58,706 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 20:57:58,706 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 20:57:58,706 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 20:57:58,706 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 20:57:58,707 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 20:57:58,707 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 20:57:58,707 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 20:57:58,707 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 20:57:58,707 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 20:57:58,708 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 20:57:58,708 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 20:57:58,708 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 20:57:58,708 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 20:57:58,708 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 20:57:58,992 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 20:57:59,004 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 20:57:59,008 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 20:57:59,009 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 20:57:59,010 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 20:57:59,010 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c
[2019-11-23 20:57:59,078 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678244e16/363171caeb79424c8e362301cf7be66c/FLAG84e2e586e
[2019-11-23 20:57:59,833 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 20:57:59,834 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label10.c
[2019-11-23 20:57:59,867 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678244e16/363171caeb79424c8e362301cf7be66c/FLAG84e2e586e
[2019-11-23 20:57:59,929 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678244e16/363171caeb79424c8e362301cf7be66c
[2019-11-23 20:57:59,940 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 20:57:59,942 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 20:57:59,944 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 20:57:59,944 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 20:57:59,948 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 20:57:59,949 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:57:59" (1/1) ...
[2019-11-23 20:57:59,952 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef28fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:59, skipping insertion in model container
[2019-11-23 20:57:59,952 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:57:59" (1/1) ...
[2019-11-23 20:57:59,962 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 20:58:00,119 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 20:58:01,739 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:58:01,749 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 20:58:02,477 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:58:02,511 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 20:58:02,512 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02 WrapperNode
[2019-11-23 20:58:02,513 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 20:58:02,514 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 20:58:02,514 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 20:58:02,514 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 20:58:02,523 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,587 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,788 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 20:58:02,788 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 20:58:02,788 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 20:58:02,789 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 20:58:02,800 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,800 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,814 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,815 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:02,950 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:03,011 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:03,040 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
[2019-11-23 20:58:03,072 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 20:58:03,073 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 20:58:03,073 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 20:58:03,074 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 20:58:03,075 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 20:58:03,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 20:58:03,162 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 20:58:08,123 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 20:58:08,124 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 20:58:08,125 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:08 BoogieIcfgContainer
[2019-11-23 20:58:08,126 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 20:58:08,127 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 20:58:08,127 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 20:58:08,130 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 20:58:08,131 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:57:59" (1/3) ...
[2019-11-23 20:58:08,132 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e118354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:08, skipping insertion in model container
[2019-11-23 20:58:08,132 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:58:02" (2/3) ...
[2019-11-23 20:58:08,132 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e118354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:58:08, skipping insertion in model container
[2019-11-23 20:58:08,133 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:58:08" (3/3) ...
[2019-11-23 20:58:08,135 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label10.c
[2019-11-23 20:58:08,144 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 20:58:08,153 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 20:58:08,165 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 20:58:08,200 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 20:58:08,200 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 20:58:08,200 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 20:58:08,200 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 20:58:08,201 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 20:58:08,201 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 20:58:08,201 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 20:58:08,201 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 20:58:08,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 885 states.
[2019-11-23 20:58:08,265 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 811
[2019-11-23 20:58:08,266 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:08,268 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:08,268 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:08,274 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:08,275 INFO  L82        PathProgramCache]: Analyzing trace with hash 18513653, now seen corresponding path program 1 times
[2019-11-23 20:58:08,285 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:08,286 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350541915]
[2019-11-23 20:58:08,286 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:08,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:10,377 WARN  L192               SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19
[2019-11-23 20:58:14,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 20:58:14,643 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350541915]
[2019-11-23 20:58:14,643 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:58:14,644 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-23 20:58:14,645 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219543223]
[2019-11-23 20:58:14,651 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-23 20:58:14,651 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:14,661 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-23 20:58:14,662 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2019-11-23 20:58:14,664 INFO  L87              Difference]: Start difference. First operand 885 states. Second operand 6 states.
[2019-11-23 20:58:26,508 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:26,509 INFO  L93              Difference]: Finished difference Result 4236 states and 8303 transitions.
[2019-11-23 20:58:26,509 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-23 20:58:26,511 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 810
[2019-11-23 20:58:26,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:26,561 INFO  L225             Difference]: With dead ends: 4236
[2019-11-23 20:58:26,562 INFO  L226             Difference]: Without dead ends: 3278
[2019-11-23 20:58:26,569 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 14 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2019-11-23 20:58:26,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3278 states.
[2019-11-23 20:58:26,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3276.
[2019-11-23 20:58:26,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3276 states.
[2019-11-23 20:58:26,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4062 transitions.
[2019-11-23 20:58:26,755 INFO  L78                 Accepts]: Start accepts. Automaton has 3276 states and 4062 transitions. Word has length 810
[2019-11-23 20:58:26,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:26,759 INFO  L462      AbstractCegarLoop]: Abstraction has 3276 states and 4062 transitions.
[2019-11-23 20:58:26,759 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-23 20:58:26,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 3276 states and 4062 transitions.
[2019-11-23 20:58:26,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 826
[2019-11-23 20:58:26,784 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:26,786 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:26,786 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:26,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:26,787 INFO  L82        PathProgramCache]: Analyzing trace with hash -270526698, now seen corresponding path program 1 times
[2019-11-23 20:58:26,788 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:26,788 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259700398]
[2019-11-23 20:58:26,789 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:27,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:28,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 20:58:28,315 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259700398]
[2019-11-23 20:58:28,315 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:58:28,316 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 20:58:28,316 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750145158]
[2019-11-23 20:58:28,319 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 20:58:28,319 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:28,319 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 20:58:28,319 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 20:58:28,320 INFO  L87              Difference]: Start difference. First operand 3276 states and 4062 transitions. Second operand 4 states.
[2019-11-23 20:58:34,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:34,641 INFO  L93              Difference]: Finished difference Result 7368 states and 10436 transitions.
[2019-11-23 20:58:34,641 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 20:58:34,641 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 825
[2019-11-23 20:58:34,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:34,667 INFO  L225             Difference]: With dead ends: 7368
[2019-11-23 20:58:34,667 INFO  L226             Difference]: Without dead ends: 4912
[2019-11-23 20:58:34,673 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 20:58:34,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4912 states.
[2019-11-23 20:58:34,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4912.
[2019-11-23 20:58:34,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4912 states.
[2019-11-23 20:58:34,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 6868 transitions.
[2019-11-23 20:58:34,795 INFO  L78                 Accepts]: Start accepts. Automaton has 4912 states and 6868 transitions. Word has length 825
[2019-11-23 20:58:34,796 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:34,796 INFO  L462      AbstractCegarLoop]: Abstraction has 4912 states and 6868 transitions.
[2019-11-23 20:58:34,797 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 20:58:34,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 4912 states and 6868 transitions.
[2019-11-23 20:58:34,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 831
[2019-11-23 20:58:34,847 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:34,848 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:34,849 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:34,849 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:34,850 INFO  L82        PathProgramCache]: Analyzing trace with hash -1100982610, now seen corresponding path program 1 times
[2019-11-23 20:58:34,850 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:34,851 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249024051]
[2019-11-23 20:58:34,851 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:34,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:35,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-11-23 20:58:35,365 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249024051]
[2019-11-23 20:58:35,365 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:58:35,366 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 20:58:35,366 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853012250]
[2019-11-23 20:58:35,367 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:58:35,367 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:35,367 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:58:35,368 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:58:35,368 INFO  L87              Difference]: Start difference. First operand 4912 states and 6868 transitions. Second operand 3 states.
[2019-11-23 20:58:39,393 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:39,393 INFO  L93              Difference]: Finished difference Result 11458 states and 17297 transitions.
[2019-11-23 20:58:39,394 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:58:39,394 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 830
[2019-11-23 20:58:39,394 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:39,427 INFO  L225             Difference]: With dead ends: 11458
[2019-11-23 20:58:39,428 INFO  L226             Difference]: Without dead ends: 7366
[2019-11-23 20:58:39,436 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:58:39,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7366 states.
[2019-11-23 20:58:39,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7366 to 7366.
[2019-11-23 20:58:39,607 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7366 states.
[2019-11-23 20:58:39,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 10091 transitions.
[2019-11-23 20:58:39,622 INFO  L78                 Accepts]: Start accepts. Automaton has 7366 states and 10091 transitions. Word has length 830
[2019-11-23 20:58:39,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:39,623 INFO  L462      AbstractCegarLoop]: Abstraction has 7366 states and 10091 transitions.
[2019-11-23 20:58:39,623 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:58:39,623 INFO  L276                IsEmpty]: Start isEmpty. Operand 7366 states and 10091 transitions.
[2019-11-23 20:58:39,650 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 877
[2019-11-23 20:58:39,650 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:39,651 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:39,652 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:39,652 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:39,652 INFO  L82        PathProgramCache]: Analyzing trace with hash -382869059, now seen corresponding path program 1 times
[2019-11-23 20:58:39,653 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:39,653 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609910132]
[2019-11-23 20:58:39,653 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:39,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:40,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 88 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2019-11-23 20:58:40,268 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609910132]
[2019-11-23 20:58:40,269 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052604965]
[2019-11-23 20:58:40,269 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:58:40,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:40,588 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 20:58:40,618 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 20:58:41,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 88 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2019-11-23 20:58:41,147 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 20:58:41,147 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2019-11-23 20:58:41,148 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959613957]
[2019-11-23 20:58:41,150 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:58:41,150 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:41,151 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:58:41,151 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 20:58:41,151 INFO  L87              Difference]: Start difference. First operand 7366 states and 10091 transitions. Second operand 3 states.
[2019-11-23 20:58:45,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:45,321 INFO  L93              Difference]: Finished difference Result 19638 states and 27796 transitions.
[2019-11-23 20:58:45,326 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:58:45,326 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 876
[2019-11-23 20:58:45,326 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:45,385 INFO  L225             Difference]: With dead ends: 19638
[2019-11-23 20:58:45,385 INFO  L226             Difference]: Without dead ends: 13092
[2019-11-23 20:58:45,394 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 875 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 20:58:45,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13092 states.
[2019-11-23 20:58:45,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 12274.
[2019-11-23 20:58:45,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12274 states.
[2019-11-23 20:58:45,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12274 states to 12274 states and 16531 transitions.
[2019-11-23 20:58:45,654 INFO  L78                 Accepts]: Start accepts. Automaton has 12274 states and 16531 transitions. Word has length 876
[2019-11-23 20:58:45,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:45,655 INFO  L462      AbstractCegarLoop]: Abstraction has 12274 states and 16531 transitions.
[2019-11-23 20:58:45,655 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:58:45,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 12274 states and 16531 transitions.
[2019-11-23 20:58:45,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 904
[2019-11-23 20:58:45,691 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:45,691 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:45,896 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:58:45,896 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:45,896 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:45,897 INFO  L82        PathProgramCache]: Analyzing trace with hash 844616444, now seen corresponding path program 1 times
[2019-11-23 20:58:45,897 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:45,898 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170769973]
[2019-11-23 20:58:45,898 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:45,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:47,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 161 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked.
[2019-11-23 20:58:47,353 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170769973]
[2019-11-23 20:58:47,354 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769409069]
[2019-11-23 20:58:47,354 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:58:47,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:47,672 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 20:58:47,691 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 20:58:48,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 161 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-11-23 20:58:48,104 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 20:58:48,104 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6
[2019-11-23 20:58:48,105 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104186424]
[2019-11-23 20:58:48,106 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:58:48,106 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:48,106 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:58:48,106 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 20:58:48,107 INFO  L87              Difference]: Start difference. First operand 12274 states and 16531 transitions. Second operand 3 states.
[2019-11-23 20:58:52,472 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:52,472 INFO  L93              Difference]: Finished difference Result 34362 states and 47110 transitions.
[2019-11-23 20:58:52,473 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:58:52,473 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 903
[2019-11-23 20:58:52,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:52,515 INFO  L225             Difference]: With dead ends: 34362
[2019-11-23 20:58:52,515 INFO  L226             Difference]: Without dead ends: 22090
[2019-11-23 20:58:52,527 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 20:58:52,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22090 states.
[2019-11-23 20:58:52,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22090 to 22090.
[2019-11-23 20:58:52,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22090 states.
[2019-11-23 20:58:52,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22090 states to 22090 states and 27923 transitions.
[2019-11-23 20:58:52,820 INFO  L78                 Accepts]: Start accepts. Automaton has 22090 states and 27923 transitions. Word has length 903
[2019-11-23 20:58:52,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:52,820 INFO  L462      AbstractCegarLoop]: Abstraction has 22090 states and 27923 transitions.
[2019-11-23 20:58:52,821 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:58:52,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 22090 states and 27923 transitions.
[2019-11-23 20:58:52,861 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 985
[2019-11-23 20:58:52,861 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:52,862 INFO  L410         BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:53,068 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:58:53,068 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:53,069 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:53,069 INFO  L82        PathProgramCache]: Analyzing trace with hash -1074955838, now seen corresponding path program 1 times
[2019-11-23 20:58:53,070 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:53,071 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688783561]
[2019-11-23 20:58:53,071 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:53,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:58:54,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked.
[2019-11-23 20:58:54,043 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688783561]
[2019-11-23 20:58:54,043 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:58:54,044 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 20:58:54,044 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433808010]
[2019-11-23 20:58:54,046 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:58:54,046 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:58:54,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:58:54,047 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:58:54,047 INFO  L87              Difference]: Start difference. First operand 22090 states and 27923 transitions. Second operand 3 states.
[2019-11-23 20:58:58,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:58:58,489 INFO  L93              Difference]: Finished difference Result 62992 states and 80372 transitions.
[2019-11-23 20:58:58,489 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:58:58,489 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 984
[2019-11-23 20:58:58,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:58:58,560 INFO  L225             Difference]: With dead ends: 62992
[2019-11-23 20:58:58,560 INFO  L226             Difference]: Without dead ends: 40904
[2019-11-23 20:58:58,588 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:58:58,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40904 states.
[2019-11-23 20:58:59,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40904 to 40904.
[2019-11-23 20:58:59,240 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40904 states.
[2019-11-23 20:58:59,313 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40904 states to 40904 states and 51027 transitions.
[2019-11-23 20:58:59,314 INFO  L78                 Accepts]: Start accepts. Automaton has 40904 states and 51027 transitions. Word has length 984
[2019-11-23 20:58:59,315 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:58:59,315 INFO  L462      AbstractCegarLoop]: Abstraction has 40904 states and 51027 transitions.
[2019-11-23 20:58:59,315 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:58:59,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 40904 states and 51027 transitions.
[2019-11-23 20:58:59,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1052
[2019-11-23 20:58:59,375 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:58:59,375 INFO  L410         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:58:59,376 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:58:59,376 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:58:59,376 INFO  L82        PathProgramCache]: Analyzing trace with hash -1802790707, now seen corresponding path program 1 times
[2019-11-23 20:58:59,377 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:58:59,377 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664466251]
[2019-11-23 20:58:59,377 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:58:59,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:00,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 567 backedges. 297 proven. 3 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked.
[2019-11-23 20:59:00,181 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664466251]
[2019-11-23 20:59:00,182 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273059102]
[2019-11-23 20:59:00,182 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:59:00,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:00,532 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 20:59:00,557 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 20:59:01,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 567 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2019-11-23 20:59:01,645 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 20:59:01,645 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2019-11-23 20:59:01,646 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709451287]
[2019-11-23 20:59:01,647 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:59:01,647 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:01,648 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:59:01,648 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 20:59:01,648 INFO  L87              Difference]: Start difference. First operand 40904 states and 51027 transitions. Second operand 3 states.
[2019-11-23 20:59:06,269 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:59:06,270 INFO  L93              Difference]: Finished difference Result 112890 states and 141127 transitions.
[2019-11-23 20:59:06,270 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:59:06,270 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1051
[2019-11-23 20:59:06,271 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:59:06,349 INFO  L225             Difference]: With dead ends: 112890
[2019-11-23 20:59:06,349 INFO  L226             Difference]: Without dead ends: 71988
[2019-11-23 20:59:06,396 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1050 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 20:59:06,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71988 states.
[2019-11-23 20:59:07,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71988 to 66262.
[2019-11-23 20:59:07,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66262 states.
[2019-11-23 20:59:07,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66262 states to 66262 states and 81706 transitions.
[2019-11-23 20:59:07,335 INFO  L78                 Accepts]: Start accepts. Automaton has 66262 states and 81706 transitions. Word has length 1051
[2019-11-23 20:59:07,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:59:07,335 INFO  L462      AbstractCegarLoop]: Abstraction has 66262 states and 81706 transitions.
[2019-11-23 20:59:07,335 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:59:07,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 66262 states and 81706 transitions.
[2019-11-23 20:59:07,390 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1164
[2019-11-23 20:59:07,390 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:59:07,391 INFO  L410         BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:59:07,603 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 20:59:07,603 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:59:07,604 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:59:07,604 INFO  L82        PathProgramCache]: Analyzing trace with hash 183313042, now seen corresponding path program 1 times
[2019-11-23 20:59:07,604 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:59:07,605 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907508279]
[2019-11-23 20:59:07,605 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:59:07,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:10,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 646 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2019-11-23 20:59:10,073 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907508279]
[2019-11-23 20:59:10,074 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:59:10,074 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 20:59:10,074 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251910844]
[2019-11-23 20:59:10,075 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-23 20:59:10,075 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:10,076 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-23 20:59:10,076 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 20:59:10,076 INFO  L87              Difference]: Start difference. First operand 66262 states and 81706 transitions. Second operand 5 states.