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_label42.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:55:43,328 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 21:55:43,330 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 21:55:43,344 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 21:55:43,345 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-14 21:55:43,346 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-14 21:55:43,348 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-10-14 21:55:43,370 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-14 21:55:43,371 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 21:55:43,372 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 21:55:43,376 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 21:55:43,381 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-14 21:55:43,383 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-14 21:55:43,387 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-14 21:55:43,389 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 21:55:43,391 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 21:55:43,393 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-14 21:55:43,393 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-10-14 21:55:43,400 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-14 21:55:43,403 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 21:55:43,404 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
[2019-10-14 21:55:43,418 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:55:43,419 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:55:43,420 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:55:43,420 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:55:43,421 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:55:43,421 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:55:43,421 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:55:43,421 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:55:43,421 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:55:43,422 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:55:43,422 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:55:43,422 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:55:43,422 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:55:43,422 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:55:43,423 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:55:43,423 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:55:43,423 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:55:43,423 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:55:43,423 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:55:43,424 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:55:43,424 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:55:43,424 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:55:43,424 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:55:43,425 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:55:43,425 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:55:43,425 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:55:43,425 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:55:43,425 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:55:43,426 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:55:43,731 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:55:43,744 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:55:43,748 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:55:43,750 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:55:43,750 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:55:43,751 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c
[2019-10-14 21:55:43,841 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937f8aae8/2a17ab2b71314e87a4bee5c0e5c50ce7/FLAGfa2b7d8d2
[2019-10-14 21:55:44,615 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:55:44,615 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c
[2019-10-14 21:55:44,654 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937f8aae8/2a17ab2b71314e87a4bee5c0e5c50ce7/FLAGfa2b7d8d2
[2019-10-14 21:55:45,157 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937f8aae8/2a17ab2b71314e87a4bee5c0e5c50ce7
[2019-10-14 21:55:45,167 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:55:45,169 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:55:45,170 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:55:45,170 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:55:45,174 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:55:45,175 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:45" (1/1) ...
[2019-10-14 21:55:45,179 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46892c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:45, skipping insertion in model container
[2019-10-14 21:55:45,179 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:45" (1/1) ...
[2019-10-14 21:55:45,187 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:55:45,356 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:55:47,022 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:55:47,036 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:55:47,691 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:55:47,731 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:55:47,732 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47 WrapperNode
[2019-10-14 21:55:47,732 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:55:47,733 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:55:47,734 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:55:47,734 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:55:47,749 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:47,750 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:47,804 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:47,806 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:47,940 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:47,977 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:48,008 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (1/1) ...
[2019-10-14 21:55:48,035 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:55:48,036 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:55:48,036 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:55:48,036 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:55:48,038 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (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
[2019-10-14 21:55:48,117 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:55:48,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:55:48,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:55:48,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 21:55:48,118 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 21:55:48,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 21:55:48,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:55:48,119 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:55:48,120 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 21:55:48,120 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 21:55:48,120 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 21:55:48,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:55:48,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:55:48,121 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:55:48,122 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:55:48,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:55:48,123 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:55:52,484 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:55:52,484 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:55:52,492 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:52 BoogieIcfgContainer
[2019-10-14 21:55:52,493 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:55:52,494 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:55:52,495 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:55:52,498 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:55:52,499 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:45" (1/3) ...
[2019-10-14 21:55:52,500 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7f923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:52, skipping insertion in model container
[2019-10-14 21:55:52,500 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:47" (2/3) ...
[2019-10-14 21:55:52,502 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7f923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:52, skipping insertion in model container
[2019-10-14 21:55:52,503 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:52" (3/3) ...
[2019-10-14 21:55:52,506 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label42.c
[2019-10-14 21:55:52,521 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:55:52,533 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:55:52,544 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:55:52,589 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:55:52,589 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:55:52,589 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:55:52,589 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:55:52,589 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:55:52,590 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:55:52,590 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:55:52,590 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:55:52,736 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-10-14 21:55:52,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 827
[2019-10-14 21:55:52,790 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:55:52,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:55:52,794 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:55:52,802 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:55:52,803 INFO  L82        PathProgramCache]: Analyzing trace with hash 1829332667, now seen corresponding path program 1 times
[2019-10-14 21:55:52,812 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:55:52,812 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672805629]
[2019-10-14 21:55:52,813 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:52,813 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:52,814 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:55:53,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:54,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:54,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:55:54,805 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672805629]
[2019-10-14 21:55:54,806 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:55:54,806 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:55:54,806 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758011825]
[2019-10-14 21:55:54,813 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:55:54,814 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:55:54,827 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:55:54,828 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:55:54,831 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-10-14 21:56:06,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:56:06,892 INFO  L93              Difference]: Finished difference Result 3521 states and 6826 transitions.
[2019-10-14 21:56:06,897 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 21:56:06,899 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 826
[2019-10-14 21:56:06,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:56:06,940 INFO  L225             Difference]: With dead ends: 3521
[2019-10-14 21:56:06,941 INFO  L226             Difference]: Without dead ends: 2547
[2019-10-14 21:56:06,951 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
[2019-10-14 21:56:06,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2547 states.
[2019-10-14 21:56:07,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534.
[2019-10-14 21:56:07,128 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2534 states.
[2019-10-14 21:56:07,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions.
[2019-10-14 21:56:07,143 INFO  L78                 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 826
[2019-10-14 21:56:07,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:56:07,146 INFO  L462      AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions.
[2019-10-14 21:56:07,146 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:56:07,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions.
[2019-10-14 21:56:07,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 842
[2019-10-14 21:56:07,180 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:56:07,181 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:56:07,181 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:56:07,181 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:56:07,182 INFO  L82        PathProgramCache]: Analyzing trace with hash 3135252, now seen corresponding path program 1 times
[2019-10-14 21:56:07,182 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:56:07,183 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78791332]
[2019-10-14 21:56:07,183 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:07,183 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:07,183 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:56:07,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:07,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:07,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:08,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:56:08,084 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78791332]
[2019-10-14 21:56:08,084 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:56:08,085 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 21:56:08,085 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951331859]
[2019-10-14 21:56:08,088 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:56:08,088 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:56:08,089 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:56:08,089 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:56:08,089 INFO  L87              Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand 8 states.
[2019-10-14 21:56:19,254 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:56:19,255 INFO  L93              Difference]: Finished difference Result 7750 states and 12918 transitions.
[2019-10-14 21:56:19,256 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2019-10-14 21:56:19,256 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 841
[2019-10-14 21:56:19,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:56:19,296 INFO  L225             Difference]: With dead ends: 7750
[2019-10-14 21:56:19,296 INFO  L226             Difference]: Without dead ends: 5222
[2019-10-14 21:56:19,306 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2019-10-14 21:56:19,312 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5222 states.
[2019-10-14 21:56:19,510 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5161.
[2019-10-14 21:56:19,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5161 states.
[2019-10-14 21:56:19,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 8360 transitions.
[2019-10-14 21:56:19,531 INFO  L78                 Accepts]: Start accepts. Automaton has 5161 states and 8360 transitions. Word has length 841
[2019-10-14 21:56:19,532 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:56:19,532 INFO  L462      AbstractCegarLoop]: Abstraction has 5161 states and 8360 transitions.
[2019-10-14 21:56:19,533 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 21:56:19,533 INFO  L276                IsEmpty]: Start isEmpty. Operand 5161 states and 8360 transitions.
[2019-10-14 21:56:19,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 861
[2019-10-14 21:56:19,558 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:56:19,559 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:56:19,559 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:56:19,559 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:56:19,560 INFO  L82        PathProgramCache]: Analyzing trace with hash -584209885, now seen corresponding path program 1 times
[2019-10-14 21:56:19,560 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:56:19,560 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801203737]
[2019-10-14 21:56:19,561 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:19,561 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:19,561 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:56:19,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:19,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:19,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:19,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:20,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-14 21:56:20,403 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801203737]
[2019-10-14 21:56:20,408 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518512754]
[2019-10-14 21:56:20,410 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
[2019-10-14 21:56:20,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:20,819 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-14 21:56:20,861 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:56:21,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:56:21,301 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:56:21,301 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-14 21:56:21,301 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79294978]
[2019-10-14 21:56:21,305 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 21:56:21,305 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:56:21,305 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 21:56:21,306 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 21:56:21,306 INFO  L87              Difference]: Start difference. First operand 5161 states and 8360 transitions. Second operand 8 states.