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_label50.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:56:11,839 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 21:56:11,842 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 21:56:11,860 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 21:56:11,861 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-14 21:56:11,863 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-14 21:56:11,865 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-10-14 21:56:11,879 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2019-10-14 21:56:11,884 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-14 21:56:11,887 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2019-10-14 21:56:11,891 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-14 21:56:11,893 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 21:56:11,894 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 21:56:11,896 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 21:56:11,901 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-14 21:56:11,905 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-14 21:56:11,906 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-14 21:56:11,909 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 21:56:11,910 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 21:56:11,913 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-14 21:56:11,913 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-10-14 21:56:11,918 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2019-10-14 21:56:11,923 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-14 21:56:11,923 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2019-10-14 21:56:11,924 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-14 21:56:11,927 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 21:56:11,928 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 21:56:11,947 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:56:11,947 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:56:11,951 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:56:11,951 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:56:11,951 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:56:11,952 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:56:11,952 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:56:11,952 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:56:11,952 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:56:11,952 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:56:11,954 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:56:11,954 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:56:11,954 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:56:11,955 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:56:11,955 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:56:11,955 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:56:11,955 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:56:11,955 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:56:11,956 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:56:11,956 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:56:11,956 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:56:11,956 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:56:11,956 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:56:11,957 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:56:11,957 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:56:11,957 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:56:11,957 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:56:11,958 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:56:11,958 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:56:12,272 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:56:12,291 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:56:12,295 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:56:12,296 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:56:12,297 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:56:12,298 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label50.c
[2019-10-14 21:56:12,371 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbbb5da7/52847c084efc41fa804017c86b2d64a7/FLAG3621c97a8
[2019-10-14 21:56:13,170 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:56:13,171 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label50.c
[2019-10-14 21:56:13,210 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbbb5da7/52847c084efc41fa804017c86b2d64a7/FLAG3621c97a8
[2019-10-14 21:56:13,723 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbbb5da7/52847c084efc41fa804017c86b2d64a7
[2019-10-14 21:56:13,736 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:56:13,738 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:56:13,739 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:56:13,739 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:56:13,743 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:56:13,744 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:13" (1/1) ...
[2019-10-14 21:56:13,748 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1ee07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:13, skipping insertion in model container
[2019-10-14 21:56:13,748 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:56:13" (1/1) ...
[2019-10-14 21:56:13,757 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:56:13,929 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:56:15,468 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:56:15,483 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:56:16,153 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:56:16,185 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:56:16,186 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16 WrapperNode
[2019-10-14 21:56:16,187 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:56:16,188 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:56:16,188 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:56:16,188 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:56:16,203 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,203 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,255 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,255 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,354 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,383 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,413 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (1/1) ...
[2019-10-14 21:56:16,439 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:56:16,440 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:56:16,440 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:56:16,440 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:56:16,441 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (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 21:56:16,499 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 21:56:16,500 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:56:16,501 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:56:16,501 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 21:56:16,501 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 21:56:16,501 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 21:56:16,501 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:56:16,502 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:56:16,502 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:56:16,502 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:56:16,502 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:56:16,502 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:56:21,138 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:56:21,139 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:56:21,146 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:21 BoogieIcfgContainer
[2019-10-14 21:56:21,150 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:56:21,152 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:56:21,152 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:56:21,157 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:56:21,158 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:56:13" (1/3) ...
[2019-10-14 21:56:21,159 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af286a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:21, skipping insertion in model container
[2019-10-14 21:56:21,159 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:56:16" (2/3) ...
[2019-10-14 21:56:21,160 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af286a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:56:21, skipping insertion in model container
[2019-10-14 21:56:21,161 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:56:21" (3/3) ...
[2019-10-14 21:56:21,171 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label50.c
[2019-10-14 21:56:21,187 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:56:21,204 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:56:21,221 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:56:21,291 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:56:21,291 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:56:21,291 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:56:21,291 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:56:21,292 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:56:21,292 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:56:21,292 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:56:21,292 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:56:21,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-10-14 21:56:21,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 829
[2019-10-14 21:56:21,412 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:56:21,414 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, 1, 1]
[2019-10-14 21:56:21,417 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:56:21,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:56:21,426 INFO  L82        PathProgramCache]: Analyzing trace with hash 1347224739, now seen corresponding path program 1 times
[2019-10-14 21:56:21,435 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:56:21,436 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762311953]
[2019-10-14 21:56:21,437 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:21,437 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:21,437 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:56:21,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:22,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:23,802 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 21:56:23,803 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762311953]
[2019-10-14 21:56:23,804 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:56:23,804 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:56:23,804 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886322167]
[2019-10-14 21:56:23,819 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:56:23,819 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:56:23,832 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:56:23,833 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:56:23,836 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-10-14 21:56:32,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:56:32,211 INFO  L93              Difference]: Finished difference Result 2672 states and 5138 transitions.
[2019-10-14 21:56:32,213 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 21:56:32,214 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 828
[2019-10-14 21:56:32,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:56:32,265 INFO  L225             Difference]: With dead ends: 2672
[2019-10-14 21:56:32,265 INFO  L226             Difference]: Without dead ends: 1702
[2019-10-14 21:56:32,278 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:56:32,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2019-10-14 21:56:32,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687.
[2019-10-14 21:56:32,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1687 states.
[2019-10-14 21:56:32,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3135 transitions.
[2019-10-14 21:56:32,460 INFO  L78                 Accepts]: Start accepts. Automaton has 1687 states and 3135 transitions. Word has length 828
[2019-10-14 21:56:32,463 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:56:32,464 INFO  L462      AbstractCegarLoop]: Abstraction has 1687 states and 3135 transitions.
[2019-10-14 21:56:32,464 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:56:32,464 INFO  L276                IsEmpty]: Start isEmpty. Operand 1687 states and 3135 transitions.
[2019-10-14 21:56:32,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 837
[2019-10-14 21:56:32,495 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:56:32,496 INFO  L380         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:56:32,496 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:56:32,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:56:32,497 INFO  L82        PathProgramCache]: Analyzing trace with hash -494477710, now seen corresponding path program 1 times
[2019-10-14 21:56:32,497 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:56:32,497 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475626476]
[2019-10-14 21:56:32,497 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:32,498 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:32,498 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:56:32,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:33,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:33,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:33,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:56:33,950 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475626476]
[2019-10-14 21:56:33,950 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795481749]
[2019-10-14 21:56:33,951 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 21:56:34,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:34,271 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-10-14 21:56:34,332 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:56:35,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:56:35,413 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-14 21:56:35,414 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-14 21:56:35,414 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606474865]
[2019-10-14 21:56:35,417 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-14 21:56:35,417 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:56:35,418 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-14 21:56:35,418 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:56:35,418 INFO  L87              Difference]: Start difference. First operand 1687 states and 3135 transitions. Second operand 3 states.
[2019-10-14 21:56:39,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:56:39,774 INFO  L93              Difference]: Finished difference Result 5047 states and 9446 transitions.
[2019-10-14 21:56:39,775 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-14 21:56:39,776 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 836
[2019-10-14 21:56:39,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:56:39,808 INFO  L225             Difference]: With dead ends: 5047
[2019-10-14 21:56:39,809 INFO  L226             Difference]: Without dead ends: 3366
[2019-10-14 21:56:39,814 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2019-10-14 21:56:39,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3366 states.
[2019-10-14 21:56:39,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366.
[2019-10-14 21:56:39,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3366 states.
[2019-10-14 21:56:39,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 5415 transitions.
[2019-10-14 21:56:39,926 INFO  L78                 Accepts]: Start accepts. Automaton has 3366 states and 5415 transitions. Word has length 836
[2019-10-14 21:56:39,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:56:39,928 INFO  L462      AbstractCegarLoop]: Abstraction has 3366 states and 5415 transitions.
[2019-10-14 21:56:39,928 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-14 21:56:39,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 3366 states and 5415 transitions.
[2019-10-14 21:56:39,949 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 883
[2019-10-14 21:56:39,949 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:56:39,950 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:40,163 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:56:40,164 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:56:40,164 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:56:40,165 INFO  L82        PathProgramCache]: Analyzing trace with hash -780725518, now seen corresponding path program 1 times
[2019-10-14 21:56:40,166 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:56:40,166 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470492001]
[2019-10-14 21:56:40,167 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:40,167 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:56:40,167 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:56:40,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:40,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:40,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:40,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:40,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:41,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-10-14 21:56:41,264 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470492001]
[2019-10-14 21:56:41,265 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934664879]
[2019-10-14 21:56:41,265 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
[2019-10-14 21:56:41,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:56:41,552 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:56:41,568 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:56:42,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-10-14 21:56:42,107 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:56:42,107 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-14 21:56:42,108 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750385283]
[2019-10-14 21:56:42,111 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-14 21:56:42,112 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:56:42,112 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-14 21:56:42,113 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-10-14 21:56:42,113 INFO  L87              Difference]: Start difference. First operand 3366 states and 5415 transitions. Second operand 11 states.