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_label00.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:56:01,825 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:56:01,827 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:56:01,840 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:56:01,840 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:56:01,841 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:56:01,843 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-10-13 17:56:01,850 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2019-10-13 17:56:01,853 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:56:01,853 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:56:01,854 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:56:01,856 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:56:01,858 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:56:01,859 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:56:01,860 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:56:01,861 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:56:01,862 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:56:01,864 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-13 17:56:01,864 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-10-13 17:56:01,870 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2019-10-13 17:56:01,871 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 17:56:01,873 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 17:56:01,873 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 17:56:01,887 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:56:01,888 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:56:01,889 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:56:01,891 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:56:01,891 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:56:01,891 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:56:01,891 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:56:01,892 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:56:01,892 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:56:01,892 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:56:01,892 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:56:01,892 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:56:01,893 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:56:01,893 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:56:01,893 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:56:01,893 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:56:01,893 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:56:01,894 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:56:01,894 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:56:01,894 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:56:01,894 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:56:01,895 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:56:01,896 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:56:01,896 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:56:01,896 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:56:01,896 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:56:01,896 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:56:01,896 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:56:01,897 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:56:02,170 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:56:02,185 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:56:02,191 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:56:02,193 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:56:02,194 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:56:02,194 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label00.c
[2019-10-13 17:56:02,272 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864be01f3/cb2aaed71f9c4a1b85c2459a30bd45f1/FLAG9cce589d8
[2019-10-13 17:56:03,093 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:56:03,094 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label00.c
[2019-10-13 17:56:03,128 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864be01f3/cb2aaed71f9c4a1b85c2459a30bd45f1/FLAG9cce589d8
[2019-10-13 17:56:03,638 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/864be01f3/cb2aaed71f9c4a1b85c2459a30bd45f1
[2019-10-13 17:56:03,646 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:56:03,648 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:56:03,649 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:56:03,650 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:56:03,654 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:56:03,655 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:03" (1/1) ...
[2019-10-13 17:56:03,658 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da9311b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:03, skipping insertion in model container
[2019-10-13 17:56:03,658 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:56:03" (1/1) ...
[2019-10-13 17:56:03,666 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:56:03,825 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:56:05,298 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:56:05,310 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:56:06,149 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:56:06,183 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:56:06,184 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06 WrapperNode
[2019-10-13 17:56:06,185 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:56:06,185 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:56:06,186 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:56:06,186 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:56:06,200 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,201 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,253 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,254 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,368 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,408 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,428 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (1/1) ...
[2019-10-13 17:56:06,450 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:56:06,451 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:56:06,451 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:56:06,451 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:56:06,452 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (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 17:56:06,517 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:56:06,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:56:06,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:56:06,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 17:56:06,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-13 17:56:06,518 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-13 17:56:06,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:56:06,519 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:56:06,519 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 17:56:06,519 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-13 17:56:06,519 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-13 17:56:06,520 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:56:06,520 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:56:06,520 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:56:06,520 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:56:06,520 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:56:06,521 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:56:11,151 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:56:11,154 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:56:11,157 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:11 BoogieIcfgContainer
[2019-10-13 17:56:11,157 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:56:11,158 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:56:11,158 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:56:11,163 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:56:11,164 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:56:03" (1/3) ...
[2019-10-13 17:56:11,165 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc18534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:11, skipping insertion in model container
[2019-10-13 17:56:11,165 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:56:06" (2/3) ...
[2019-10-13 17:56:11,166 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc18534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:56:11, skipping insertion in model container
[2019-10-13 17:56:11,167 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:56:11" (3/3) ...
[2019-10-13 17:56:11,175 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label00.c
[2019-10-13 17:56:11,189 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:56:11,202 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:56:11,216 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:56:11,266 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:56:11,266 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:56:11,266 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:56:11,267 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:56:11,267 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:56:11,267 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:56:11,267 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:56:11,267 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:56:11,318 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-10-13 17:56:11,384 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 814
[2019-10-13 17:56:11,384 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:56:11,387 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]
[2019-10-13 17:56:11,389 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:56:11,394 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:56:11,395 INFO  L82        PathProgramCache]: Analyzing trace with hash -103659118, now seen corresponding path program 1 times
[2019-10-13 17:56:11,404 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:56:11,405 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107526654]
[2019-10-13 17:56:11,405 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:11,406 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:11,406 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:56:11,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:12,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:13,690 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 17:56:13,690 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107526654]
[2019-10-13 17:56:13,691 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:56:13,692 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:56:13,692 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111716986]
[2019-10-13 17:56:13,698 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:56:13,699 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:56:13,711 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:56:13,712 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:56:13,714 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-10-13 17:56:21,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:56:21,929 INFO  L93              Difference]: Finished difference Result 2672 states and 5137 transitions.
[2019-10-13 17:56:21,930 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 17:56:21,932 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 813
[2019-10-13 17:56:21,944 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:56:21,994 INFO  L225             Difference]: With dead ends: 2672
[2019-10-13 17:56:21,995 INFO  L226             Difference]: Without dead ends: 1702
[2019-10-13 17:56:22,012 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-10-13 17:56:22,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2019-10-13 17:56:22,214 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689.
[2019-10-13 17:56:22,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1689 states.
[2019-10-13 17:56:22,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3005 transitions.
[2019-10-13 17:56:22,227 INFO  L78                 Accepts]: Start accepts. Automaton has 1689 states and 3005 transitions. Word has length 813
[2019-10-13 17:56:22,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:56:22,231 INFO  L462      AbstractCegarLoop]: Abstraction has 1689 states and 3005 transitions.
[2019-10-13 17:56:22,232 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:56:22,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 1689 states and 3005 transitions.
[2019-10-13 17:56:22,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 822
[2019-10-13 17:56:22,267 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:56:22,268 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]
[2019-10-13 17:56:22,269 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:56:22,270 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:56:22,270 INFO  L82        PathProgramCache]: Analyzing trace with hash -284169309, now seen corresponding path program 1 times
[2019-10-13 17:56:22,270 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:56:22,271 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228442782]
[2019-10-13 17:56:22,271 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:22,271 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:22,271 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:56:22,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:23,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:23,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:23,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:56:23,681 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228442782]
[2019-10-13 17:56:23,681 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326084540]
[2019-10-13 17:56:23,681 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 17:56:23,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:23,984 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-10-13 17:56:24,063 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:56:24,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:56:24,703 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:56:24,703 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 17:56:24,704 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761460869]
[2019-10-13 17:56:24,707 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:56:24,707 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:56:24,707 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:56:24,708 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:56:24,708 INFO  L87              Difference]: Start difference. First operand 1689 states and 3005 transitions. Second operand 3 states.
[2019-10-13 17:56:29,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:56:29,161 INFO  L93              Difference]: Finished difference Result 5053 states and 9054 transitions.
[2019-10-13 17:56:29,162 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:56:29,163 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 821
[2019-10-13 17:56:29,164 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:56:29,183 INFO  L225             Difference]: With dead ends: 5053
[2019-10-13 17:56:29,183 INFO  L226             Difference]: Without dead ends: 3370
[2019-10-13 17:56:29,188 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 827 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:56:29,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3370 states.
[2019-10-13 17:56:29,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3370.
[2019-10-13 17:56:29,266 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3370 states.
[2019-10-13 17:56:29,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 5620 transitions.
[2019-10-13 17:56:29,279 INFO  L78                 Accepts]: Start accepts. Automaton has 3370 states and 5620 transitions. Word has length 821
[2019-10-13 17:56:29,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:56:29,281 INFO  L462      AbstractCegarLoop]: Abstraction has 3370 states and 5620 transitions.
[2019-10-13 17:56:29,281 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:56:29,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 3370 states and 5620 transitions.
[2019-10-13 17:56:29,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 887
[2019-10-13 17:56:29,302 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:56:29,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:56:29,511 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:56:29,511 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:56:29,512 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:56:29,512 INFO  L82        PathProgramCache]: Analyzing trace with hash -375010739, now seen corresponding path program 1 times
[2019-10-13 17:56:29,513 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:56:29,516 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544744472]
[2019-10-13 17:56:29,517 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:29,517 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:56:29,517 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:56:29,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:29,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:30,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:56:30,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:56:30,890 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544744472]
[2019-10-13 17:56:30,890 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:56:30,891 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 17:56:30,891 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864911459]
[2019-10-13 17:56:30,893 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 17:56:30,894 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:56:30,895 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 17:56:30,896 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:56:30,896 INFO  L87              Difference]: Start difference. First operand 3370 states and 5620 transitions. Second operand 9 states.