/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_label44.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 19:03:28,386 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-06 19:03:28,389 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-06 19:03:28,407 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 19:03:28,408 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-06 19:03:28,410 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-06 19:03:28,412 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-11-06 19:03:28,438 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-06 19:03:28,439 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-06 19:03:28,440 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-06 19:03:28,445 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-06 19:03:28,449 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-06 19:03:28,450 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-06 19:03:28,451 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
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[2019-11-06 19:03:28,453 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-06 19:03:28,460 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-06 19:03:28,461 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-06 19:03:28,462 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 19:03:28,476 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:03:28,476 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:03:28,477 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:03:28,477 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:03:28,477 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:03:28,478 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:03:28,478 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:03:28,478 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:03:28,478 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:03:28,478 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:03:28,479 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:03:28,480 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:03:28,480 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:03:28,480 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:03:28,480 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:03:28,480 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:03:28,481 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:03:28,481 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:03:28,481 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:03:28,481 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:03:28,481 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:03:28,482 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:03:28,482 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:03:28,482 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:03:28,760 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:03:28,775 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:03:28,779 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:03:28,780 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:03:28,781 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:03:28,781 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c
[2019-11-06 19:03:28,851 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30343af49/d499eb4e7b3047f1a5a3857c4a27aff5/FLAGbd605327f
[2019-11-06 19:03:29,609 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:03:29,610 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c
[2019-11-06 19:03:29,637 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30343af49/d499eb4e7b3047f1a5a3857c4a27aff5/FLAGbd605327f
[2019-11-06 19:03:30,147 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30343af49/d499eb4e7b3047f1a5a3857c4a27aff5
[2019-11-06 19:03:30,157 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:03:30,158 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:03:30,159 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:03:30,160 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:03:30,164 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:03:30,165 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:30" (1/1) ...
[2019-11-06 19:03:30,169 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d80ea1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:30, skipping insertion in model container
[2019-11-06 19:03:30,169 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:30" (1/1) ...
[2019-11-06 19:03:30,179 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:03:30,322 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:03:31,978 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:03:31,992 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:03:32,655 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:03:32,693 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:03:32,694 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32 WrapperNode
[2019-11-06 19:03:32,694 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:03:32,695 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:03:32,695 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:03:32,695 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:03:32,711 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,711 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,758 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,759 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,904 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,934 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,952 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (1/1) ...
[2019-11-06 19:03:32,973 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:03:32,974 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:03:32,974 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:03:32,974 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:03:32,976 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (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 19:03:33,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:03:33,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:03:33,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:03:33,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-11-06 19:03:33,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-11-06 19:03:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-11-06 19:03:33,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:03:33,056 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:03:33,056 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-11-06 19:03:33,056 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-11-06 19:03:33,057 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-11-06 19:03:33,057 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:03:33,057 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:03:33,057 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:03:33,057 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:03:33,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:03:33,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:03:37,489 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:03:37,490 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:03:37,492 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:37 BoogieIcfgContainer
[2019-11-06 19:03:37,492 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:03:37,493 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:03:37,494 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:03:37,497 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:03:37,497 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:30" (1/3) ...
[2019-11-06 19:03:37,498 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a38023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:37, skipping insertion in model container
[2019-11-06 19:03:37,498 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:32" (2/3) ...
[2019-11-06 19:03:37,499 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a38023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:37, skipping insertion in model container
[2019-11-06 19:03:37,499 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:37" (3/3) ...
[2019-11-06 19:03:37,501 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label44.c
[2019-11-06 19:03:37,511 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:03:37,520 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:03:37,533 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:03:37,569 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:03:37,569 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:03:37,569 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:03:37,569 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:03:37,569 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:03:37,569 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:03:37,570 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:03:37,570 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:03:37,612 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-11-06 19:03:37,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 795
[2019-11-06 19:03:37,664 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:03:37,667 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]
[2019-11-06 19:03:37,669 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:03:37,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:03:37,676 INFO  L82        PathProgramCache]: Analyzing trace with hash 1766115387, now seen corresponding path program 1 times
[2019-11-06 19:03:37,685 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:03:37,686 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269099241]
[2019-11-06 19:03:37,687 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:03:38,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:38,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:39,586 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 19:03:39,587 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269099241]
[2019-11-06 19:03:39,588 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:03:39,588 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:03:39,590 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760400511]
[2019-11-06 19:03:39,598 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:03:39,599 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:03:39,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:03:39,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:03:39,612 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-11-06 19:03:51,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:03:51,378 INFO  L93              Difference]: Finished difference Result 3521 states and 6826 transitions.
[2019-11-06 19:03:51,379 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:03:51,380 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 794
[2019-11-06 19:03:51,385 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:03:51,426 INFO  L225             Difference]: With dead ends: 3521
[2019-11-06 19:03:51,427 INFO  L226             Difference]: Without dead ends: 2547
[2019-11-06 19:03:51,436 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:03:51,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2547 states.
[2019-11-06 19:03:51,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534.
[2019-11-06 19:03:51,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2534 states.
[2019-11-06 19:03:51,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions.
[2019-11-06 19:03:51,641 INFO  L78                 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 794
[2019-11-06 19:03:51,645 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:03:51,645 INFO  L462      AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions.
[2019-11-06 19:03:51,645 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:03:51,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions.
[2019-11-06 19:03:51,730 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 810
[2019-11-06 19:03:51,731 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:03:51,731 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]
[2019-11-06 19:03:51,732 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:03:51,732 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:03:51,733 INFO  L82        PathProgramCache]: Analyzing trace with hash -1178936172, now seen corresponding path program 1 times
[2019-11-06 19:03:51,733 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:03:51,733 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719664689]
[2019-11-06 19:03:51,734 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:03:51,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:52,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:52,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:03:52,646 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 19:03:52,646 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719664689]
[2019-11-06 19:03:52,647 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:03:52,647 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-06 19:03:52,647 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732457182]
[2019-11-06 19:03:52,650 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:03:52,651 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:03:52,651 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:03:52,651 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:03:52,652 INFO  L87              Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand 8 states.
[2019-11-06 19:04:03,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:04:03,629 INFO  L93              Difference]: Finished difference Result 7750 states and 12918 transitions.
[2019-11-06 19:04:03,630 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2019-11-06 19:04:03,630 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 809
[2019-11-06 19:04:03,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:04:03,667 INFO  L225             Difference]: With dead ends: 7750
[2019-11-06 19:04:03,667 INFO  L226             Difference]: Without dead ends: 5222
[2019-11-06 19:04:03,676 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2019-11-06 19:04:03,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5222 states.
[2019-11-06 19:04:03,860 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5161.
[2019-11-06 19:04:03,861 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5161 states.
[2019-11-06 19:04:03,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 8360 transitions.
[2019-11-06 19:04:03,878 INFO  L78                 Accepts]: Start accepts. Automaton has 5161 states and 8360 transitions. Word has length 809
[2019-11-06 19:04:03,878 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:04:03,879 INFO  L462      AbstractCegarLoop]: Abstraction has 5161 states and 8360 transitions.
[2019-11-06 19:04:03,879 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-06 19:04:03,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 5161 states and 8360 transitions.
[2019-11-06 19:04:03,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 829
[2019-11-06 19:04:03,897 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:04:03,898 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:04:03,898 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:04:03,899 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:04:03,899 INFO  L82        PathProgramCache]: Analyzing trace with hash 1511041955, now seen corresponding path program 1 times
[2019-11-06 19:04:03,899 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:04:03,899 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327181260]
[2019-11-06 19:04:03,900 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:04:03,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:04:04,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:04:04,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:04:04,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:04:04,938 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:04:04,939 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327181260]
[2019-11-06 19:04:04,939 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924521144]
[2019-11-06 19:04:04,940 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 19:04:05,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:04:05,334 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-11-06 19:04:05,389 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:04:06,090 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-06 19:04:06,091 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:04:06,091 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-11-06 19:04:06,092 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962338651]
[2019-11-06 19:04:06,093 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:04:06,094 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:04:06,094 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:04:06,094 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:04:06,094 INFO  L87              Difference]: Start difference. First operand 5161 states and 8360 transitions. Second operand 3 states.