/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_label33.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 20:59:35,419 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 20:59:35,422 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-23 20:59:35,434 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-23 20:59:35,434 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-23 20:59:35,435 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2019-11-23 20:59:35,447 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-23 20:59:35,448 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-23 20:59:35,449 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-23 20:59:35,453 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2019-11-23 20:59:35,461 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-23 20:59:35,462 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-23 20:59:35,464 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-23 20:59:35,464 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-11-23 20:59:35,476 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-23 20:59:35,480 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 20:59:35,500 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 20:59:35,500 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 20:59:35,502 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 20:59:35,502 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 20:59:35,502 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 20:59:35,503 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 20:59:35,503 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 20:59:35,503 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 20:59:35,503 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 20:59:35,504 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 20:59:35,504 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 20:59:35,505 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 20:59:35,505 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 20:59:35,505 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 20:59:35,505 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 20:59:35,506 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 20:59:35,506 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 20:59:35,506 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 20:59:35,506 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 20:59:35,506 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 20:59:35,507 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 20:59:35,507 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 20:59:35,507 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 20:59:35,507 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 20:59:35,507 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 20:59:35,508 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 20:59:35,508 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 20:59:35,508 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 20:59:35,508 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 20:59:35,508 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 20:59:35,794 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 20:59:35,806 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 20:59:35,809 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 20:59:35,811 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 20:59:35,811 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 20:59:35,812 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33.c
[2019-11-23 20:59:35,871 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ca884bd/32d3a8bb664147158500845409a1183d/FLAG125ce7599
[2019-11-23 20:59:36,660 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 20:59:36,660 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label33.c
[2019-11-23 20:59:36,704 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ca884bd/32d3a8bb664147158500845409a1183d/FLAG125ce7599
[2019-11-23 20:59:37,189 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ca884bd/32d3a8bb664147158500845409a1183d
[2019-11-23 20:59:37,199 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 20:59:37,201 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 20:59:37,202 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 20:59:37,202 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 20:59:37,205 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 20:59:37,206 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:59:37" (1/1) ...
[2019-11-23 20:59:37,209 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b9ebb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:37, skipping insertion in model container
[2019-11-23 20:59:37,209 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:59:37" (1/1) ...
[2019-11-23 20:59:37,217 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 20:59:37,359 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 20:59:38,814 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:59:38,822 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 20:59:39,547 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:59:39,583 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 20:59:39,584 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39 WrapperNode
[2019-11-23 20:59:39,584 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 20:59:39,585 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 20:59:39,585 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 20:59:39,586 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 20:59:39,594 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,645 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,805 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 20:59:39,805 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 20:59:39,805 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 20:59:39,805 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 20:59:39,815 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,816 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,843 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,844 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,958 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:39,994 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:40,027 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (1/1) ...
[2019-11-23 20:59:40,053 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 20:59:40,053 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 20:59:40,054 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 20:59:40,054 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 20:59:40,055 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (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 20:59:40,117 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 20:59:40,117 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 20:59:44,942 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 20:59:44,942 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 20:59:44,944 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:59:44 BoogieIcfgContainer
[2019-11-23 20:59:44,945 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 20:59:44,948 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 20:59:44,949 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 20:59:44,952 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 20:59:44,953 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:59:37" (1/3) ...
[2019-11-23 20:59:44,954 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489af6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:59:44, skipping insertion in model container
[2019-11-23 20:59:44,954 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:39" (2/3) ...
[2019-11-23 20:59:44,954 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489af6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:59:44, skipping insertion in model container
[2019-11-23 20:59:44,955 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:59:44" (3/3) ...
[2019-11-23 20:59:44,957 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label33.c
[2019-11-23 20:59:44,966 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 20:59:44,976 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 20:59:44,987 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 20:59:45,034 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 20:59:45,034 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 20:59:45,035 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 20:59:45,035 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 20:59:45,035 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 20:59:45,036 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 20:59:45,036 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 20:59:45,036 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 20:59:45,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 885 states.
[2019-11-23 20:59:45,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 813
[2019-11-23 20:59:45,120 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:59:45,122 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, 1, 1]
[2019-11-23 20:59:45,123 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:59:45,129 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:59:45,129 INFO  L82        PathProgramCache]: Analyzing trace with hash 612015069, now seen corresponding path program 1 times
[2019-11-23 20:59:45,139 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:59:45,139 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420686845]
[2019-11-23 20:59:45,140 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:59:45,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:47,232 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 20:59:47,232 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420686845]
[2019-11-23 20:59:47,233 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:59:47,234 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 20:59:47,235 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441084863]
[2019-11-23 20:59:47,241 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:59:47,241 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:47,252 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:59:47,253 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:59:47,254 INFO  L87              Difference]: Start difference. First operand 885 states. Second operand 3 states.
[2019-11-23 20:59:51,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:59:51,924 INFO  L93              Difference]: Finished difference Result 2589 states and 5028 transitions.
[2019-11-23 20:59:51,924 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:59:51,926 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 812
[2019-11-23 20:59:51,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:59:52,007 INFO  L225             Difference]: With dead ends: 2589
[2019-11-23 20:59:52,007 INFO  L226             Difference]: Without dead ends: 1640
[2019-11-23 20:59:52,023 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 20:59:52,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1640 states.
[2019-11-23 20:59:52,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640.
[2019-11-23 20:59:52,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1640 states.
[2019-11-23 20:59:52,179 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2918 transitions.
[2019-11-23 20:59:52,181 INFO  L78                 Accepts]: Start accepts. Automaton has 1640 states and 2918 transitions. Word has length 812
[2019-11-23 20:59:52,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:59:52,185 INFO  L462      AbstractCegarLoop]: Abstraction has 1640 states and 2918 transitions.
[2019-11-23 20:59:52,186 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:59:52,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 1640 states and 2918 transitions.
[2019-11-23 20:59:52,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 818
[2019-11-23 20:59:52,218 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:59:52,219 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-23 20:59:52,221 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:59:52,221 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:59:52,222 INFO  L82        PathProgramCache]: Analyzing trace with hash -1218234217, now seen corresponding path program 1 times
[2019-11-23 20:59:52,222 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:59:52,223 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442901281]
[2019-11-23 20:59:52,223 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:59:52,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:52,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 20:59:52,958 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442901281]
[2019-11-23 20:59:52,958 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:59:52,959 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 20:59:52,959 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859973376]
[2019-11-23 20:59:52,970 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 20:59:52,971 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:52,971 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 20:59:52,972 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 20:59:52,972 INFO  L87              Difference]: Start difference. First operand 1640 states and 2918 transitions. Second operand 3 states.
[2019-11-23 20:59:57,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 20:59:57,073 INFO  L93              Difference]: Finished difference Result 4914 states and 8749 transitions.
[2019-11-23 20:59:57,073 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 20:59:57,074 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 817
[2019-11-23 20:59:57,074 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 20:59:57,091 INFO  L225             Difference]: With dead ends: 4914
[2019-11-23 20:59:57,091 INFO  L226             Difference]: Without dead ends: 3276
[2019-11-23 20:59:57,094 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 20:59:57,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3276 states.
[2019-11-23 20:59:57,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276.
[2019-11-23 20:59:57,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3276 states.
[2019-11-23 20:59:57,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 5077 transitions.
[2019-11-23 20:59:57,155 INFO  L78                 Accepts]: Start accepts. Automaton has 3276 states and 5077 transitions. Word has length 817
[2019-11-23 20:59:57,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 20:59:57,156 INFO  L462      AbstractCegarLoop]: Abstraction has 3276 states and 5077 transitions.
[2019-11-23 20:59:57,156 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 20:59:57,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 3276 states and 5077 transitions.
[2019-11-23 20:59:57,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 835
[2019-11-23 20:59:57,168 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:59:57,169 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 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 20:59:57,170 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:59:57,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:59:57,170 INFO  L82        PathProgramCache]: Analyzing trace with hash 2044467882, now seen corresponding path program 1 times
[2019-11-23 20:59:57,171 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:59:57,171 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991606412]
[2019-11-23 20:59:57,171 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:59:57,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:59,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-23 20:59:59,264 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991606412]
[2019-11-23 20:59:59,265 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:59:59,265 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 20:59:59,265 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733165318]
[2019-11-23 20:59:59,266 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 20:59:59,268 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:59,268 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 20:59:59,268 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 20:59:59,269 INFO  L87              Difference]: Start difference. First operand 3276 states and 5077 transitions. Second operand 4 states.
[2019-11-23 21:00:06,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:06,160 INFO  L93              Difference]: Finished difference Result 13094 states and 20300 transitions.
[2019-11-23 21:00:06,161 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:00:06,161 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 834
[2019-11-23 21:00:06,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:06,201 INFO  L225             Difference]: With dead ends: 13094
[2019-11-23 21:00:06,202 INFO  L226             Difference]: Without dead ends: 9820
[2019-11-23 21:00:06,208 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 21:00:06,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9820 states.
[2019-11-23 21:00:06,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9820.
[2019-11-23 21:00:06,366 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9820 states.
[2019-11-23 21:00:06,386 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9820 states to 9820 states and 14501 transitions.
[2019-11-23 21:00:06,386 INFO  L78                 Accepts]: Start accepts. Automaton has 9820 states and 14501 transitions. Word has length 834
[2019-11-23 21:00:06,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:06,388 INFO  L462      AbstractCegarLoop]: Abstraction has 9820 states and 14501 transitions.
[2019-11-23 21:00:06,388 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:00:06,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 9820 states and 14501 transitions.
[2019-11-23 21:00:06,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 878
[2019-11-23 21:00:06,417 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:06,418 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:06,418 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:06,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:06,419 INFO  L82        PathProgramCache]: Analyzing trace with hash -1764799613, now seen corresponding path program 1 times
[2019-11-23 21:00:06,419 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:06,420 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612489141]
[2019-11-23 21:00:06,420 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:06,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:07,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2019-11-23 21:00:07,284 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612489141]
[2019-11-23 21:00:07,284 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:07,285 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:00:07,286 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649214190]
[2019-11-23 21:00:07,288 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:00:07,288 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:07,288 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:00:07,289 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:00:07,289 INFO  L87              Difference]: Start difference. First operand 9820 states and 14501 transitions. Second operand 4 states.
[2019-11-23 21:00:14,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:14,378 INFO  L93              Difference]: Finished difference Result 39270 states and 57996 transitions.
[2019-11-23 21:00:14,378 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:00:14,379 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 877
[2019-11-23 21:00:14,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:14,464 INFO  L225             Difference]: With dead ends: 39270
[2019-11-23 21:00:14,464 INFO  L226             Difference]: Without dead ends: 29452
[2019-11-23 21:00:14,477 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:00:14,506 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29452 states.
[2019-11-23 21:00:14,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29452 to 29452.
[2019-11-23 21:00:14,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29452 states.
[2019-11-23 21:00:14,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29452 states to 29452 states and 38773 transitions.
[2019-11-23 21:00:14,968 INFO  L78                 Accepts]: Start accepts. Automaton has 29452 states and 38773 transitions. Word has length 877
[2019-11-23 21:00:14,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:14,968 INFO  L462      AbstractCegarLoop]: Abstraction has 29452 states and 38773 transitions.
[2019-11-23 21:00:14,968 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:00:14,968 INFO  L276                IsEmpty]: Start isEmpty. Operand 29452 states and 38773 transitions.
[2019-11-23 21:00:15,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 910
[2019-11-23 21:00:15,023 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:15,024 INFO  L410         BasicCegarLoop]: trace histogram [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, 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, 1]
[2019-11-23 21:00:15,024 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:15,025 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:15,025 INFO  L82        PathProgramCache]: Analyzing trace with hash 1938044569, now seen corresponding path program 1 times
[2019-11-23 21:00:15,025 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:15,027 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893757916]
[2019-11-23 21:00:15,028 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:15,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:15,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 169 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2019-11-23 21:00:15,866 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893757916]
[2019-11-23 21:00:15,867 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:15,867 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:00:15,867 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822788680]
[2019-11-23 21:00:15,868 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:00:15,869 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:15,869 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:00:15,869 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:00:15,870 INFO  L87              Difference]: Start difference. First operand 29452 states and 38773 transitions. Second operand 4 states.
[2019-11-23 21:00:23,108 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:23,108 INFO  L93              Difference]: Finished difference Result 111254 states and 147178 transitions.
[2019-11-23 21:00:23,108 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:00:23,109 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 909
[2019-11-23 21:00:23,109 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:23,268 INFO  L225             Difference]: With dead ends: 111254
[2019-11-23 21:00:23,268 INFO  L226             Difference]: Without dead ends: 81804
[2019-11-23 21:00:23,319 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:00:23,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81804 states.
[2019-11-23 21:00:24,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81804 to 70352.
[2019-11-23 21:00:24,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70352 states.
[2019-11-23 21:00:24,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70352 states to 70352 states and 89171 transitions.
[2019-11-23 21:00:24,491 INFO  L78                 Accepts]: Start accepts. Automaton has 70352 states and 89171 transitions. Word has length 909
[2019-11-23 21:00:24,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:24,492 INFO  L462      AbstractCegarLoop]: Abstraction has 70352 states and 89171 transitions.
[2019-11-23 21:00:24,492 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:00:24,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 70352 states and 89171 transitions.
[2019-11-23 21:00:24,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 925
[2019-11-23 21:00:24,583 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:24,583 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1]
[2019-11-23 21:00:24,584 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:24,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:24,584 INFO  L82        PathProgramCache]: Analyzing trace with hash 721185496, now seen corresponding path program 1 times
[2019-11-23 21:00:24,585 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:24,585 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992735446]
[2019-11-23 21:00:24,585 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:24,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:27,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 228 backedges. 129 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2019-11-23 21:00:27,677 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992735446]
[2019-11-23 21:00:27,677 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411204]
[2019-11-23 21:00:27,677 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 21:00:28,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:28,072 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:00:28,099 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:00:28,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 228 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2019-11-23 21:00:28,764 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:00:28,765 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6
[2019-11-23 21:00:28,765 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017312751]
[2019-11-23 21:00:28,767 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:00:28,767 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:28,767 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:00:28,767 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2019-11-23 21:00:28,768 INFO  L87              Difference]: Start difference. First operand 70352 states and 89171 transitions. Second operand 3 states.
[2019-11-23 21:00:33,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:33,863 INFO  L93              Difference]: Finished difference Result 177512 states and 223995 transitions.
[2019-11-23 21:00:33,864 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:00:33,864 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 924
[2019-11-23 21:00:33,864 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:34,159 INFO  L225             Difference]: With dead ends: 177512
[2019-11-23 21:00:34,159 INFO  L226             Difference]: Without dead ends: 107162
[2019-11-23 21:00:34,242 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 923 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 21:00:34,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107162 states.
[2019-11-23 21:00:36,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107162 to 104708.
[2019-11-23 21:00:36,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 104708 states.
[2019-11-23 21:00:36,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 104708 states to 104708 states and 124431 transitions.
[2019-11-23 21:00:36,212 INFO  L78                 Accepts]: Start accepts. Automaton has 104708 states and 124431 transitions. Word has length 924
[2019-11-23 21:00:36,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:36,213 INFO  L462      AbstractCegarLoop]: Abstraction has 104708 states and 124431 transitions.
[2019-11-23 21:00:36,213 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:00:36,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 104708 states and 124431 transitions.
[2019-11-23 21:00:36,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1298
[2019-11-23 21:00:36,281 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:36,282 INFO  L410         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:36,489 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:00:36,490 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:36,490 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:36,491 INFO  L82        PathProgramCache]: Analyzing trace with hash 1133232012, now seen corresponding path program 1 times
[2019-11-23 21:00:36,492 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:36,492 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186196332]
[2019-11-23 21:00:36,492 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:36,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:39,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 783 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked.
[2019-11-23 21:00:39,133 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186196332]
[2019-11-23 21:00:39,133 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:39,134 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-23 21:00:39,134 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37374178]
[2019-11-23 21:00:39,135 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:00:39,135 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:39,136 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:00:39,136 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:00:39,136 INFO  L87              Difference]: Start difference. First operand 104708 states and 124431 transitions. Second operand 4 states.
[2019-11-23 21:00:47,034 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:47,034 INFO  L93              Difference]: Finished difference Result 215140 states and 255012 transitions.
[2019-11-23 21:00:47,035 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:00:47,035 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1297
[2019-11-23 21:00:47,035 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:47,177 INFO  L225             Difference]: With dead ends: 215140
[2019-11-23 21:00:47,177 INFO  L226             Difference]: Without dead ends: 110434
[2019-11-23 21:00:47,233 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:00:47,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110434 states.