/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 19:03:15,805 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-06 19:03:15,807 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-06 19:03:15,828 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 19:03:15,828 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-11-06 19:03:15,862 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-06 19:03:15,864 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-11-06 19:03:15,894 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-06 19:03:15,896 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-06 19:03:15,897 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 19:03:15,936 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:03:15,937 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:03:15,938 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:03:15,938 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:03:15,938 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:03:15,939 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:03:15,942 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:03:15,942 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:03:15,942 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:03:15,943 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:03:15,943 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:03:15,943 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:03:15,943 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:03:15,943 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:03:15,944 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:03:15,944 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:03:15,944 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:03:15,944 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:03:15,944 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:03:15,945 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:03:15,945 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:03:15,945 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:03:15,945 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:03:15,945 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:03:15,945 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:03:15,946 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:03:15,946 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:03:15,946 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:03:15,946 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:03:16,276 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:03:16,292 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:03:16,296 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:03:16,298 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:03:16,298 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:03:16,299 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c
[2019-11-06 19:03:16,363 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d/FLAG4dd8a23d3
[2019-11-06 19:03:17,071 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:03:17,072 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label43.c
[2019-11-06 19:03:17,104 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d/FLAG4dd8a23d3
[2019-11-06 19:03:17,156 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2038c3928/761faf79a403424b827f293ea1fa0a9d
[2019-11-06 19:03:17,164 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:03:17,166 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:03:17,167 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:03:17,167 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:03:17,171 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:03:17,172 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:17" (1/1) ...
[2019-11-06 19:03:17,175 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f3db85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:17, skipping insertion in model container
[2019-11-06 19:03:17,175 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:17" (1/1) ...
[2019-11-06 19:03:17,183 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:03:17,332 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:03:19,105 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:03:19,116 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:03:19,752 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:03:19,787 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:03:19,788 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19 WrapperNode
[2019-11-06 19:03:19,788 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:03:19,789 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:03:19,789 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:03:19,789 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:03:19,803 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:19,803 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:19,854 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:19,856 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:19,964 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:19,994 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:20,017 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
[2019-11-06 19:03:20,044 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:03:20,044 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:03:20,045 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:03:20,045 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:03:20,046 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:03:20,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:03:20,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:03:20,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:03:20,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-11-06 19:03:20,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-11-06 19:03:20,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-11-06 19:03:20,120 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:03:20,120 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:03:20,121 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-11-06 19:03:20,121 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-11-06 19:03:20,121 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-11-06 19:03:20,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:03:20,122 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:03:20,122 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:03:20,123 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:03:20,123 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:03:20,124 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:03:24,609 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:03:24,609 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:03:24,615 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:24 BoogieIcfgContainer
[2019-11-06 19:03:24,615 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:03:24,616 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:03:24,616 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:03:24,619 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:03:24,620 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:17" (1/3) ...
[2019-11-06 19:03:24,620 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:24, skipping insertion in model container
[2019-11-06 19:03:24,620 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:19" (2/3) ...
[2019-11-06 19:03:24,621 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:24, skipping insertion in model container
[2019-11-06 19:03:24,621 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:24" (3/3) ...
[2019-11-06 19:03:24,623 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label43.c
[2019-11-06 19:03:24,633 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:03:24,641 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:03:24,653 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:03:24,686 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:03:24,686 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:03:24,686 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:03:24,686 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:03:24,687 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:03:24,687 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:03:24,687 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:03:24,687 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:03:24,723 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-11-06 19:03:24,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 811
[2019-11-06 19:03:24,773 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:03:24,775 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:03:24,778 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:03:24,784 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:03:24,785 INFO  L82        PathProgramCache]: Analyzing trace with hash -1377691781, now seen corresponding path program 1 times
[2019-11-06 19:03:24,794 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:03:24,795 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049326455]
[2019-11-06 19:03:24,795 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:03:25,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:26,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:27,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:03:27,115 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049326455]
[2019-11-06 19:03:27,116 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:03:27,116 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:03:27,118 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199729076]
[2019-11-06 19:03:27,125 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:03:27,125 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:03:27,137 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:03:27,138 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:03:27,140 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-11-06 19:03:35,336 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:03:35,337 INFO  L93              Difference]: Finished difference Result 2672 states and 5137 transitions.
[2019-11-06 19:03:35,337 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 19:03:35,340 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 810
[2019-11-06 19:03:35,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:03:35,410 INFO  L225             Difference]: With dead ends: 2672
[2019-11-06 19:03:35,410 INFO  L226             Difference]: Without dead ends: 1702
[2019-11-06 19:03:35,427 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:03:35,459 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2019-11-06 19:03:35,625 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689.
[2019-11-06 19:03:35,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1689 states.
[2019-11-06 19:03:35,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions.
[2019-11-06 19:03:35,642 INFO  L78                 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 810
[2019-11-06 19:03:35,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:03:35,645 INFO  L462      AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions.
[2019-11-06 19:03:35,645 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:03:35,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions.
[2019-11-06 19:03:35,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 819
[2019-11-06 19:03:35,679 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:03:35,680 INFO  L410         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]
[2019-11-06 19:03:35,681 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:03:35,681 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:03:35,682 INFO  L82        PathProgramCache]: Analyzing trace with hash 370218762, now seen corresponding path program 1 times
[2019-11-06 19:03:35,682 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:03:35,682 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508252811]
[2019-11-06 19:03:35,683 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:03:35,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:36,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:36,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:37,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:03:37,115 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508252811]
[2019-11-06 19:03:37,115 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232900705]
[2019-11-06 19:03:37,115 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:03:37,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:37,426 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-11-06 19:03:37,470 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:03:38,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:03:38,332 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:03:38,333 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-11-06 19:03:38,334 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677350415]
[2019-11-06 19:03:38,336 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:03:38,337 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:03:38,337 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:03:38,338 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:03:38,356 INFO  L87              Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 3 states.
[2019-11-06 19:03:42,490 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:03:42,490 INFO  L93              Difference]: Finished difference Result 5053 states and 9124 transitions.
[2019-11-06 19:03:42,490 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:03:42,491 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 818
[2019-11-06 19:03:42,492 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:03:42,513 INFO  L225             Difference]: With dead ends: 5053
[2019-11-06 19:03:42,513 INFO  L226             Difference]: Without dead ends: 3370
[2019-11-06 19:03:42,518 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:03:42,524 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3370 states.
[2019-11-06 19:03:42,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3370.
[2019-11-06 19:03:42,597 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3370 states.
[2019-11-06 19:03:42,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 5276 transitions.
[2019-11-06 19:03:42,613 INFO  L78                 Accepts]: Start accepts. Automaton has 3370 states and 5276 transitions. Word has length 818
[2019-11-06 19:03:42,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:03:42,615 INFO  L462      AbstractCegarLoop]: Abstraction has 3370 states and 5276 transitions.
[2019-11-06 19:03:42,615 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:03:42,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 3370 states and 5276 transitions.
[2019-11-06 19:03:42,638 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 826
[2019-11-06 19:03:42,638 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:03:42,639 INFO  L410         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]
[2019-11-06 19:03:42,850 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:03:42,850 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:03:42,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:03:42,852 INFO  L82        PathProgramCache]: Analyzing trace with hash -1564583468, now seen corresponding path program 1 times
[2019-11-06 19:03:42,852 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:03:42,853 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209334003]
[2019-11-06 19:03:42,853 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:03:43,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:43,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:43,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:44,015 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:03:44,016 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209334003]
[2019-11-06 19:03:44,016 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:03:44,016 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-06 19:03:44,017 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880183623]
[2019-11-06 19:03:44,020 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:03:44,029 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:03:44,029 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:03:44,030 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:03:44,030 INFO  L87              Difference]: Start difference. First operand 3370 states and 5276 transitions. Second operand 8 states.