/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_label34.c


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


This is Ultimate 0.1.24-6598664
[2019-11-23 20:59:40,063 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-23 20:59:40,066 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-23 20:59:40,087 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-23 20:59:40,087 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-23 20:59:40,090 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2019-11-23 20:59:40,119 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-23 20:59:40,119 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-23 20:59:40,124 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-23 20:59:40,126 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-23 20:59:40,129 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-23 20:59:40,132 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-23 20:59:40,134 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-23 20:59:40,135 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-23 20:59:40,139 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-23 20:59:40,140 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-11-23 20:59:40,145 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2019-11-23 20:59:40,155 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-23 20:59:40,157 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-23 20:59:40,157 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 20:59:40,171 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-23 20:59:40,171 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-23 20:59:40,172 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-23 20:59:40,173 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-23 20:59:40,173 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-23 20:59:40,173 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-23 20:59:40,173 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-23 20:59:40,174 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-23 20:59:40,174 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-23 20:59:40,174 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-23 20:59:40,174 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-23 20:59:40,174 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-23 20:59:40,175 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-23 20:59:40,175 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-23 20:59:40,175 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-23 20:59:40,175 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-23 20:59:40,175 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-23 20:59:40,176 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-23 20:59:40,176 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-23 20:59:40,176 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-23 20:59:40,176 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-23 20:59:40,176 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-23 20:59:40,177 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-23 20:59:40,177 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-23 20:59:40,177 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-23 20:59:40,177 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-23 20:59:40,178 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-23 20:59:40,178 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-23 20:59:40,178 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-23 20:59:40,178 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-23 20:59:40,471 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-23 20:59:40,487 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-23 20:59:40,490 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-23 20:59:40,491 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-23 20:59:40,492 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-23 20:59:40,492 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c
[2019-11-23 20:59:40,564 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32efb8ef4/1fbe5fb536d741b1830c0ab310f5473e/FLAG5c0a7f39b
[2019-11-23 20:59:41,313 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-23 20:59:41,314 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label34.c
[2019-11-23 20:59:41,356 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32efb8ef4/1fbe5fb536d741b1830c0ab310f5473e/FLAG5c0a7f39b
[2019-11-23 20:59:41,408 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32efb8ef4/1fbe5fb536d741b1830c0ab310f5473e
[2019-11-23 20:59:41,419 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-23 20:59:41,421 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-23 20:59:41,423 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-23 20:59:41,423 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-23 20:59:41,427 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-23 20:59:41,428 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:59:41" (1/1) ...
[2019-11-23 20:59:41,431 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d48176b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:41, skipping insertion in model container
[2019-11-23 20:59:41,431 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:59:41" (1/1) ...
[2019-11-23 20:59:41,440 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-23 20:59:41,576 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-23 20:59:43,111 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:59:43,119 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-23 20:59:43,757 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-23 20:59:43,793 INFO  L208         MainTranslator]: Completed translation
[2019-11-23 20:59:43,794 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43 WrapperNode
[2019-11-23 20:59:43,794 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-23 20:59:43,795 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-23 20:59:43,795 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-23 20:59:43,796 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-23 20:59:43,806 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:43,858 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,019 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-23 20:59:44,019 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-23 20:59:44,020 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-23 20:59:44,020 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-23 20:59:44,030 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,030 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,064 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,064 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,154 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,195 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,219 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (1/1) ...
[2019-11-23 20:59:44,243 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-23 20:59:44,244 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-23 20:59:44,244 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-23 20:59:44,244 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-23 20:59:44,245 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (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 20:59:44,311 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-23 20:59:44,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-23 20:59:48,755 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-23 20:59:48,755 INFO  L284             CfgBuilder]: Removed 13 assume(true) statements.
[2019-11-23 20:59:48,758 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:59:48 BoogieIcfgContainer
[2019-11-23 20:59:48,758 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-23 20:59:48,760 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-23 20:59:48,761 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-23 20:59:48,764 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-23 20:59:48,765 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:59:41" (1/3) ...
[2019-11-23 20:59:48,767 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98c698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:59:48, skipping insertion in model container
[2019-11-23 20:59:48,767 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:59:43" (2/3) ...
[2019-11-23 20:59:48,767 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a98c698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:59:48, skipping insertion in model container
[2019-11-23 20:59:48,768 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:59:48" (3/3) ...
[2019-11-23 20:59:48,770 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label34.c
[2019-11-23 20:59:48,780 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-23 20:59:48,790 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-23 20:59:48,802 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-23 20:59:48,848 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-23 20:59:48,849 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-23 20:59:48,849 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-23 20:59:48,849 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-23 20:59:48,849 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-23 20:59:48,850 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-23 20:59:48,850 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-23 20:59:48,850 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-23 20:59:48,888 INFO  L276                IsEmpty]: Start isEmpty. Operand 885 states.
[2019-11-23 20:59:48,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 789
[2019-11-23 20:59:48,938 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 20:59:48,940 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]
[2019-11-23 20:59:48,941 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 20:59:48,947 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 20:59:48,948 INFO  L82        PathProgramCache]: Analyzing trace with hash -122154755, now seen corresponding path program 1 times
[2019-11-23 20:59:48,957 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 20:59:48,958 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884355884]
[2019-11-23 20:59:48,958 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 20:59:49,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 20:59:54,435 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 20:59:54,436 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884355884]
[2019-11-23 20:59:54,437 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 20:59:54,437 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-23 20:59:54,439 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290388655]
[2019-11-23 20:59:54,445 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-23 20:59:54,446 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 20:59:54,460 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-23 20:59:54,461 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2019-11-23 20:59:54,463 INFO  L87              Difference]: Start difference. First operand 885 states. Second operand 8 states.
[2019-11-23 21:00:12,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:12,537 INFO  L93              Difference]: Finished difference Result 5878 states and 11571 transitions.
[2019-11-23 21:00:12,538 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-23 21:00:12,540 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 788
[2019-11-23 21:00:12,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:12,602 INFO  L225             Difference]: With dead ends: 5878
[2019-11-23 21:00:12,602 INFO  L226             Difference]: Without dead ends: 4914
[2019-11-23 21:00:12,610 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 14 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2019-11-23 21:00:12,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4914 states.
[2019-11-23 21:00:12,787 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 4912.
[2019-11-23 21:00:12,789 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4912 states.
[2019-11-23 21:00:12,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 5998 transitions.
[2019-11-23 21:00:12,805 INFO  L78                 Accepts]: Start accepts. Automaton has 4912 states and 5998 transitions. Word has length 788
[2019-11-23 21:00:12,807 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:12,807 INFO  L462      AbstractCegarLoop]: Abstraction has 4912 states and 5998 transitions.
[2019-11-23 21:00:12,808 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-23 21:00:12,808 INFO  L276                IsEmpty]: Start isEmpty. Operand 4912 states and 5998 transitions.
[2019-11-23 21:00:12,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 811
[2019-11-23 21:00:12,837 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:12,838 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]
[2019-11-23 21:00:12,838 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:12,838 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:12,839 INFO  L82        PathProgramCache]: Analyzing trace with hash -1990531382, now seen corresponding path program 1 times
[2019-11-23 21:00:12,839 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:12,839 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519473484]
[2019-11-23 21:00:12,840 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:13,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:14,194 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 21:00:14,194 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519473484]
[2019-11-23 21:00:14,195 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:14,195 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:00:14,195 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524749313]
[2019-11-23 21:00:14,198 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:00:14,198 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:14,198 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:00:14,199 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:00:14,199 INFO  L87              Difference]: Start difference. First operand 4912 states and 5998 transitions. Second operand 4 states.
[2019-11-23 21:00:20,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:20,682 INFO  L93              Difference]: Finished difference Result 10640 states and 14308 transitions.
[2019-11-23 21:00:20,683 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-23 21:00:20,683 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 810
[2019-11-23 21:00:20,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:20,714 INFO  L225             Difference]: With dead ends: 10640
[2019-11-23 21:00:20,715 INFO  L226             Difference]: Without dead ends: 6548
[2019-11-23 21:00:20,721 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 21:00:20,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6548 states.
[2019-11-23 21:00:20,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6548.
[2019-11-23 21:00:20,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6548 states.
[2019-11-23 21:00:20,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 8786 transitions.
[2019-11-23 21:00:20,831 INFO  L78                 Accepts]: Start accepts. Automaton has 6548 states and 8786 transitions. Word has length 810
[2019-11-23 21:00:20,832 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:20,832 INFO  L462      AbstractCegarLoop]: Abstraction has 6548 states and 8786 transitions.
[2019-11-23 21:00:20,833 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-23 21:00:20,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 6548 states and 8786 transitions.
[2019-11-23 21:00:20,849 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 816
[2019-11-23 21:00:20,850 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:20,850 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 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 21:00:20,851 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:20,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:20,851 INFO  L82        PathProgramCache]: Analyzing trace with hash 1913814538, now seen corresponding path program 1 times
[2019-11-23 21:00:20,852 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:20,852 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364682376]
[2019-11-23 21:00:20,852 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:20,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:21,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-11-23 21:00:21,490 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364682376]
[2019-11-23 21:00:21,492 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:21,492 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-23 21:00:21,493 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378046363]
[2019-11-23 21:00:21,494 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:00:21,495 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:21,496 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:00:21,496 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-23 21:00:21,497 INFO  L87              Difference]: Start difference. First operand 6548 states and 8786 transitions. Second operand 3 states.
[2019-11-23 21:00:25,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:25,697 INFO  L93              Difference]: Finished difference Result 14730 states and 21133 transitions.
[2019-11-23 21:00:25,702 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:00:25,702 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 815
[2019-11-23 21:00:25,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:25,735 INFO  L225             Difference]: With dead ends: 14730
[2019-11-23 21:00:25,736 INFO  L226             Difference]: Without dead ends: 9002
[2019-11-23 21:00:25,742 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 21:00:25,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9002 states.
[2019-11-23 21:00:25,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 9002.
[2019-11-23 21:00:25,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9002 states.
[2019-11-23 21:00:25,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 12009 transitions.
[2019-11-23 21:00:25,881 INFO  L78                 Accepts]: Start accepts. Automaton has 9002 states and 12009 transitions. Word has length 815
[2019-11-23 21:00:25,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:25,881 INFO  L462      AbstractCegarLoop]: Abstraction has 9002 states and 12009 transitions.
[2019-11-23 21:00:25,882 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:00:25,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 9002 states and 12009 transitions.
[2019-11-23 21:00:25,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 855
[2019-11-23 21:00:25,907 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:25,907 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]
[2019-11-23 21:00:25,908 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:25,908 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:25,908 INFO  L82        PathProgramCache]: Analyzing trace with hash 1681504709, now seen corresponding path program 1 times
[2019-11-23 21:00:25,909 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:25,909 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735491203]
[2019-11-23 21:00:25,909 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:25,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:26,663 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 21:00:26,665 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735491203]
[2019-11-23 21:00:26,665 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090809790]
[2019-11-23 21:00:26,666 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 21:00:27,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:27,010 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:00:27,069 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:00:27,496 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 21:00:27,497 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:00:27,497 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2019-11-23 21:00:27,497 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134900649]
[2019-11-23 21:00:27,499 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:00:27,499 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:27,499 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:00:27,499 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:00:27,500 INFO  L87              Difference]: Start difference. First operand 9002 states and 12009 transitions. Second operand 3 states.
[2019-11-23 21:00:31,777 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:31,777 INFO  L93              Difference]: Finished difference Result 24546 states and 33526 transitions.
[2019-11-23 21:00:31,782 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:00:31,782 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 854
[2019-11-23 21:00:31,783 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:31,836 INFO  L225             Difference]: With dead ends: 24546
[2019-11-23 21:00:31,836 INFO  L226             Difference]: Without dead ends: 16364
[2019-11-23 21:00:31,845 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 853 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 21:00:31,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16364 states.
[2019-11-23 21:00:32,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16364 to 15546.
[2019-11-23 21:00:32,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15546 states.
[2019-11-23 21:00:32,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15546 states to 15546 states and 20187 transitions.
[2019-11-23 21:00:32,084 INFO  L78                 Accepts]: Start accepts. Automaton has 15546 states and 20187 transitions. Word has length 854
[2019-11-23 21:00:32,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:32,084 INFO  L462      AbstractCegarLoop]: Abstraction has 15546 states and 20187 transitions.
[2019-11-23 21:00:32,084 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:00:32,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 15546 states and 20187 transitions.
[2019-11-23 21:00:32,117 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 889
[2019-11-23 21:00:32,117 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:32,118 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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]
[2019-11-23 21:00:32,323 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:00:32,326 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:32,327 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:32,327 INFO  L82        PathProgramCache]: Analyzing trace with hash 146843184, now seen corresponding path program 1 times
[2019-11-23 21:00:32,327 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:32,327 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840427545]
[2019-11-23 21:00:32,328 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:32,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:33,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 182 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked.
[2019-11-23 21:00:33,210 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840427545]
[2019-11-23 21:00:33,211 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714604848]
[2019-11-23 21:00:33,211 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 21:00:33,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:33,637 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:00:33,657 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:00:34,123 INFO  L134       CoverageAnalysis]: Checked inductivity of 182 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2019-11-23 21:00:34,124 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:00:34,124 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2019-11-23 21:00:34,124 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904395386]
[2019-11-23 21:00:34,125 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:00:34,125 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:34,125 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:00:34,126 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:00:34,126 INFO  L87              Difference]: Start difference. First operand 15546 states and 20187 transitions. Second operand 3 states.
[2019-11-23 21:00:38,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:38,320 INFO  L93              Difference]: Finished difference Result 44178 states and 58072 transitions.
[2019-11-23 21:00:38,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:00:38,321 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 888
[2019-11-23 21:00:38,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:38,382 INFO  L225             Difference]: With dead ends: 44178
[2019-11-23 21:00:38,382 INFO  L226             Difference]: Without dead ends: 28634
[2019-11-23 21:00:38,401 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 887 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 21:00:38,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28634 states.
[2019-11-23 21:00:38,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28634 to 27816.
[2019-11-23 21:00:38,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27816 states.
[2019-11-23 21:00:38,960 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27816 states to 27816 states and 35859 transitions.
[2019-11-23 21:00:38,960 INFO  L78                 Accepts]: Start accepts. Automaton has 27816 states and 35859 transitions. Word has length 888
[2019-11-23 21:00:38,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:38,961 INFO  L462      AbstractCegarLoop]: Abstraction has 27816 states and 35859 transitions.
[2019-11-23 21:00:38,961 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:00:38,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 27816 states and 35859 transitions.
[2019-11-23 21:00:39,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 923
[2019-11-23 21:00:39,015 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:39,016 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-11-23 21:00:39,221 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:00:39,221 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:39,222 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:39,222 INFO  L82        PathProgramCache]: Analyzing trace with hash 542026407, now seen corresponding path program 1 times
[2019-11-23 21:00:39,223 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:39,223 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761684135]
[2019-11-23 21:00:39,224 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:39,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:40,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 286 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2019-11-23 21:00:40,157 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761684135]
[2019-11-23 21:00:40,157 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163745649]
[2019-11-23 21:00:40,157 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 21:00:40,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:40,459 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-11-23 21:00:40,471 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-23 21:00:41,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 286 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked.
[2019-11-23 21:00:41,244 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-23 21:00:41,244 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2019-11-23 21:00:41,246 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568804929]
[2019-11-23 21:00:41,247 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-23 21:00:41,248 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:41,249 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-23 21:00:41,249 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:00:41,249 INFO  L87              Difference]: Start difference. First operand 27816 states and 35859 transitions. Second operand 3 states.
[2019-11-23 21:00:45,566 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:45,567 INFO  L93              Difference]: Finished difference Result 76080 states and 98907 transitions.
[2019-11-23 21:00:45,567 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-23 21:00:45,567 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 922
[2019-11-23 21:00:45,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:45,651 INFO  L225             Difference]: With dead ends: 76080
[2019-11-23 21:00:45,652 INFO  L226             Difference]: Without dead ends: 48266
[2019-11-23 21:00:45,678 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 921 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 21:00:45,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48266 states.
[2019-11-23 21:00:46,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48266 to 46630.
[2019-11-23 21:00:46,209 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46630 states.
[2019-11-23 21:00:46,264 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46630 states to 46630 states and 57049 transitions.
[2019-11-23 21:00:46,264 INFO  L78                 Accepts]: Start accepts. Automaton has 46630 states and 57049 transitions. Word has length 922
[2019-11-23 21:00:46,266 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:46,266 INFO  L462      AbstractCegarLoop]: Abstraction has 46630 states and 57049 transitions.
[2019-11-23 21:00:46,266 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-23 21:00:46,266 INFO  L276                IsEmpty]: Start isEmpty. Operand 46630 states and 57049 transitions.
[2019-11-23 21:00:46,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1137
[2019-11-23 21:00:46,317 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:46,318 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, 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]
[2019-11-23 21:00:46,530 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-23 21:00:46,531 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:46,531 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:46,531 INFO  L82        PathProgramCache]: Analyzing trace with hash -1611470214, now seen corresponding path program 1 times
[2019-11-23 21:00:46,532 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:46,532 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125247413]
[2019-11-23 21:00:46,533 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:46,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:00:48,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 622 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked.
[2019-11-23 21:00:48,548 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125247413]
[2019-11-23 21:00:48,548 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:00:48,548 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:00:48,549 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216484823]
[2019-11-23 21:00:48,550 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-23 21:00:48,551 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:00:48,551 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-23 21:00:48,551 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:00:48,551 INFO  L87              Difference]: Start difference. First operand 46630 states and 57049 transitions. Second operand 5 states.
[2019-11-23 21:00:57,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-23 21:00:57,657 INFO  L93              Difference]: Finished difference Result 126796 states and 157418 transitions.
[2019-11-23 21:00:57,657 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-23 21:00:57,658 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1136
[2019-11-23 21:00:57,658 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-23 21:00:57,821 INFO  L225             Difference]: With dead ends: 126796
[2019-11-23 21:00:57,821 INFO  L226             Difference]: Without dead ends: 80168
[2019-11-23 21:00:57,854 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-11-23 21:00:57,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80168 states.
[2019-11-23 21:00:58,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80168 to 78532.
[2019-11-23 21:00:58,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 78532 states.
[2019-11-23 21:00:58,701 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78532 states to 78532 states and 92317 transitions.
[2019-11-23 21:00:58,701 INFO  L78                 Accepts]: Start accepts. Automaton has 78532 states and 92317 transitions. Word has length 1136
[2019-11-23 21:00:58,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-23 21:00:58,702 INFO  L462      AbstractCegarLoop]: Abstraction has 78532 states and 92317 transitions.
[2019-11-23 21:00:58,702 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-23 21:00:58,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 78532 states and 92317 transitions.
[2019-11-23 21:00:58,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1293
[2019-11-23 21:00:58,755 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-23 21:00:58,756 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-11-23 21:00:58,756 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-23 21:00:58,756 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-23 21:00:58,757 INFO  L82        PathProgramCache]: Analyzing trace with hash -197514492, now seen corresponding path program 1 times
[2019-11-23 21:00:58,757 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-23 21:00:58,757 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129301747]
[2019-11-23 21:00:58,758 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-23 21:00:58,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-23 21:01:00,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 690 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked.
[2019-11-23 21:01:00,364 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129301747]
[2019-11-23 21:01:00,365 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-23 21:01:00,365 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-23 21:01:00,365 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943799060]
[2019-11-23 21:01:00,366 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-23 21:01:00,366 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-23 21:01:00,367 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-23 21:01:00,367 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-11-23 21:01:00,367 INFO  L87              Difference]: Start difference. First operand 78532 states and 92317 transitions. Second operand 4 states.