java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:56:41,108 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:56:41,110 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:56:41,128 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:56:41,128 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:56:41,130 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:56:41,132 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-10-13 17:56:41,149 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2019-10-13 17:56:41,156 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:56:41,157 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:56:41,159 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:56:41,161 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:56:41,167 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:56:41,169 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:56:41,171 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:56:41,172 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:56:41,174 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:56:41,176 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-13 17:56:41,176 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-10-13 17:56:41,187 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 17:56:41,192 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 17:56:41,193 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
[2019-10-13 17:56:41,211 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:56:41,211 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:56:41,212 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:56:41,212 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:56:41,213 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:56:41,213 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:56:41,213 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:56:41,213 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:56:41,213 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:56:41,214 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:56:41,215 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:56:41,215 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:56:41,215 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:56:41,215 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:56:41,216 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:56:41,216 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:56:41,216 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:56:41,216 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:56:41,216 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:56:41,218 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:56:41,218 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:56:41,219 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:56:41,220 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:56:41,220 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:56:41,220 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:56:41,221 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:56:41,221 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:56:41,222 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:56:41,222 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:56:41,490 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:56:41,508 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:56:41,512 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:56:41,513 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:56:41,514 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:56:41,514 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c
[2019-10-13 17:56:41,588 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb027591/0c95dcc63b5247b6be8295323e3ba15b/FLAG5c4311af4
[2019-10-13 17:56:42,362 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:56:42,363 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label34.c
[2019-10-13 17:56:42,396 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb027591/0c95dcc63b5247b6be8295323e3ba15b/FLAG5c4311af4
[2019-10-13 17:56:42,439 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb027591/0c95dcc63b5247b6be8295323e3ba15b
[2019-10-13 17:56:42,449 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:56:42,451 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:56:42,452 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:56:42,452 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:56:42,456 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:56:42,457 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:42" (1/1) ...
[2019-10-13 17:56:42,461 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4525a3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:42, skipping insertion in model container
[2019-10-13 17:56:42,461 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:42" (1/1) ...
[2019-10-13 17:56:42,471 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:56:42,628 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:56:43,980 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:56:43,991 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:56:44,948 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:56:44,990 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:56:44,991 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44 WrapperNode
[2019-10-13 17:56:44,992 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:56:44,993 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:56:44,993 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:56:44,993 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:56:45,009 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,010 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,071 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,071 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,164 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,193 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,214 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (1/1) ...
[2019-10-13 17:56:45,236 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:56:45,237 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:56:45,237 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:56:45,237 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:56:45,239 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (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
[2019-10-13 17:56:45,304 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:56:45,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:56:45,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:56:45,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 17:56:45,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-13 17:56:45,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-13 17:56:45,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:56:45,306 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:56:45,306 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 17:56:45,306 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-13 17:56:45,306 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-13 17:56:45,306 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:56:45,307 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:56:45,307 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:56:45,307 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:56:45,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:56:45,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:56:50,150 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:56:50,155 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:56:50,158 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:50 BoogieIcfgContainer
[2019-10-13 17:56:50,158 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:56:50,161 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:56:50,161 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:56:50,166 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:56:50,166 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:56:42" (1/3) ...
[2019-10-13 17:56:50,168 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0b7920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:50, skipping insertion in model container
[2019-10-13 17:56:50,168 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:44" (2/3) ...
[2019-10-13 17:56:50,169 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0b7920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:50, skipping insertion in model container
[2019-10-13 17:56:50,170 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:50" (3/3) ...
[2019-10-13 17:56:50,187 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label34.c
[2019-10-13 17:56:50,198 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:56:50,209 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:56:50,221 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:56:50,264 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:56:50,264 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:56:50,265 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:56:50,265 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:56:50,265 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:56:50,265 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:56:50,265 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:56:50,265 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:56:50,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-10-13 17:56:50,372 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 801
[2019-10-13 17:56:50,372 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:56:50,374 INFO  L380         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]
[2019-10-13 17:56:50,376 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:56:50,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:56:50,383 INFO  L82        PathProgramCache]: Analyzing trace with hash 1010735603, now seen corresponding path program 1 times
[2019-10-13 17:56:50,392 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:56:50,392 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546459328]
[2019-10-13 17:56:50,393 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:50,393 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:50,393 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:56:50,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:52,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:53,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:56:53,058 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546459328]
[2019-10-13 17:56:53,059 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:56:53,059 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:56:53,059 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797662429]
[2019-10-13 17:56:53,069 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:56:53,069 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:56:53,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:56:53,081 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:56:53,083 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-10-13 17:57:05,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:57:05,428 INFO  L93              Difference]: Finished difference Result 3521 states and 6827 transitions.
[2019-10-13 17:57:05,429 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:57:05,430 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 800
[2019-10-13 17:57:05,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:57:05,472 INFO  L225             Difference]: With dead ends: 3521
[2019-10-13 17:57:05,472 INFO  L226             Difference]: Without dead ends: 2547
[2019-10-13 17:57:05,482 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:57:05,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2547 states.
[2019-10-13 17:57:05,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534.
[2019-10-13 17:57:05,694 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2534 states.
[2019-10-13 17:57:05,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4128 transitions.
[2019-10-13 17:57:05,708 INFO  L78                 Accepts]: Start accepts. Automaton has 2534 states and 4128 transitions. Word has length 800
[2019-10-13 17:57:05,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:57:05,711 INFO  L462      AbstractCegarLoop]: Abstraction has 2534 states and 4128 transitions.
[2019-10-13 17:57:05,711 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:57:05,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 2534 states and 4128 transitions.
[2019-10-13 17:57:05,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 874
[2019-10-13 17:57:05,750 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:05,751 INFO  L380         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:57:05,751 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:05,752 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:05,752 INFO  L82        PathProgramCache]: Analyzing trace with hash 1821293431, now seen corresponding path program 1 times
[2019-10-13 17:57:05,753 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:05,753 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574127982]
[2019-10-13 17:57:05,753 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:05,753 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:05,753 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:05,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:05,982 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:06,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:06,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:06,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 82 backedges. 67 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 17:57:06,637 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574127982]
[2019-10-13 17:57:06,637 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840521674]
[2019-10-13 17:57:06,637 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
[2019-10-13 17:57:06,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:06,934 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 17:57:06,968 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:57:07,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked.
[2019-10-13 17:57:07,610 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:57:07,610 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2019-10-13 17:57:07,610 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853500865]
[2019-10-13 17:57:07,613 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:57:07,614 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:07,614 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:57:07,614 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:57:07,615 INFO  L87              Difference]: Start difference. First operand 2534 states and 4128 transitions. Second operand 5 states.
[2019-10-13 17:57:13,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:57:13,462 INFO  L93              Difference]: Finished difference Result 7687 states and 12697 transitions.
[2019-10-13 17:57:13,462 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:57:13,463 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 873
[2019-10-13 17:57:13,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:57:13,495 INFO  L225             Difference]: With dead ends: 7687
[2019-10-13 17:57:13,496 INFO  L226             Difference]: Without dead ends: 5159
[2019-10-13 17:57:13,504 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 872 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2019-10-13 17:57:13,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5159 states.
[2019-10-13 17:57:13,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5111.
[2019-10-13 17:57:13,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5111 states.
[2019-10-13 17:57:13,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 8272 transitions.
[2019-10-13 17:57:13,694 INFO  L78                 Accepts]: Start accepts. Automaton has 5111 states and 8272 transitions. Word has length 873
[2019-10-13 17:57:13,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:57:13,694 INFO  L462      AbstractCegarLoop]: Abstraction has 5111 states and 8272 transitions.
[2019-10-13 17:57:13,694 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:57:13,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 5111 states and 8272 transitions.
[2019-10-13 17:57:13,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 879
[2019-10-13 17:57:13,724 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:13,725 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 17:57:13,932 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:57:13,932 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:13,933 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:13,933 INFO  L82        PathProgramCache]: Analyzing trace with hash 811367286, now seen corresponding path program 1 times
[2019-10-13 17:57:13,934 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:13,935 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392739726]
[2019-10-13 17:57:13,935 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:13,935 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:13,935 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:14,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:14,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:14,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:15,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:15,140 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392739726]
[2019-10-13 17:57:15,140 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:57:15,140 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 17:57:15,141 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966904101]
[2019-10-13 17:57:15,142 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 17:57:15,143 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:15,143 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 17:57:15,143 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:57:15,144 INFO  L87              Difference]: Start difference. First operand 5111 states and 8272 transitions. Second operand 9 states.