/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_label23.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-06 19:02:18,272 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-06 19:02:18,275 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-06 19:02:18,293 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-06 19:02:18,293 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-06 19:02:18,295 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-06 19:02:18,297 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-06 19:02:18,300 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-06 19:02:18,302 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-06 19:02:18,303 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-06 19:02:18,304 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-06 19:02:18,314 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-06 19:02:18,314 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-06 19:02:18,316 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-06 19:02:18,317 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-06 19:02:18,321 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-06 19:02:18,323 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-06 19:02:18,324 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-06 19:02:18,328 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-06 19:02:18,331 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-06 19:02:18,333 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-06 19:02:18,335 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-06 19:02:18,336 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-06 19:02:18,337 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-06 19:02:18,341 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-06 19:02:18,341 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-06 19:02:18,342 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-06 19:02:18,344 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-06 19:02:18,345 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-06 19:02:18,348 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-06 19:02:18,348 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-06 19:02:18,349 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-06 19:02:18,350 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-06 19:02:18,351 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-06 19:02:18,354 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-06 19:02:18,354 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-06 19:02:18,356 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-06 19:02:18,356 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-06 19:02:18,356 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-06 19:02:18,359 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-06 19:02:18,361 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-06 19:02:18,361 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 19:02:18,375 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:02:18,375 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:02:18,377 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:02:18,377 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:02:18,377 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:02:18,377 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:02:18,377 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:02:18,378 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:02:18,378 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:02:18,378 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:02:18,378 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:02:18,378 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:02:18,379 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:02:18,379 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:02:18,379 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:02:18,379 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:02:18,379 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:02:18,380 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:02:18,380 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:02:18,380 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:02:18,380 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:02:18,380 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:02:18,381 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:02:18,381 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:02:18,381 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:02:18,381 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:02:18,381 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:02:18,381 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:02:18,382 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:02:18,696 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:02:18,716 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:02:18,719 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:02:18,721 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:02:18,721 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:02:18,721 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23.c
[2019-11-06 19:02:18,777 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bc154cb/86920b76183a483b8307c830f881a4cb/FLAG53de8857d
[2019-11-06 19:02:19,534 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:02:19,535 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label23.c
[2019-11-06 19:02:19,571 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bc154cb/86920b76183a483b8307c830f881a4cb/FLAG53de8857d
[2019-11-06 19:02:19,630 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bc154cb/86920b76183a483b8307c830f881a4cb
[2019-11-06 19:02:19,642 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:02:19,643 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:02:19,645 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:02:19,645 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:02:19,648 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:02:19,650 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:19" (1/1) ...
[2019-11-06 19:02:19,653 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f56c909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:19, skipping insertion in model container
[2019-11-06 19:02:19,653 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:19" (1/1) ...
[2019-11-06 19:02:19,662 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:02:19,822 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:02:21,308 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:02:21,317 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:02:22,139 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:02:22,174 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:02:22,175 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22 WrapperNode
[2019-11-06 19:02:22,175 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:02:22,176 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:02:22,176 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:02:22,176 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:02:22,191 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,191 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,245 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,247 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,365 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,411 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,435 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (1/1) ...
[2019-11-06 19:02:22,462 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:02:22,463 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:02:22,463 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:02:22,463 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:02:22,467 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (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 19:02:22,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:02:22,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:02:22,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:02:22,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-11-06 19:02:22,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-11-06 19:02:22,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-11-06 19:02:22,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:02:22,540 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:02:22,540 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-11-06 19:02:22,541 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-11-06 19:02:22,541 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-11-06 19:02:22,541 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:02:22,541 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:02:22,541 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:02:22,542 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:02:22,542 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:02:22,542 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:02:27,348 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:02:27,348 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:02:27,353 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:27 BoogieIcfgContainer
[2019-11-06 19:02:27,353 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:02:27,355 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:02:27,355 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:02:27,358 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:02:27,358 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:02:19" (1/3) ...
[2019-11-06 19:02:27,359 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe0f369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:27, skipping insertion in model container
[2019-11-06 19:02:27,359 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:22" (2/3) ...
[2019-11-06 19:02:27,360 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe0f369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:27, skipping insertion in model container
[2019-11-06 19:02:27,361 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:27" (3/3) ...
[2019-11-06 19:02:27,370 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label23.c
[2019-11-06 19:02:27,384 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:02:27,395 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:02:27,409 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:02:27,451 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:02:27,451 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:02:27,451 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:02:27,451 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:02:27,451 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:02:27,452 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:02:27,452 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:02:27,452 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:02:27,495 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-11-06 19:02:27,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 818
[2019-11-06 19:02:27,542 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:27,544 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, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:27,546 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:27,551 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:27,552 INFO  L82        PathProgramCache]: Analyzing trace with hash -699559966, now seen corresponding path program 1 times
[2019-11-06 19:02:27,562 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:27,562 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395624202]
[2019-11-06 19:02:27,563 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:28,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:29,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:29,966 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 19:02:29,967 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395624202]
[2019-11-06 19:02:29,967 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:02:29,968 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:02:29,969 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90731996]
[2019-11-06 19:02:29,976 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:02:29,976 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:29,986 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:02:29,987 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:02:29,989 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-11-06 19:02:37,775 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:37,775 INFO  L93              Difference]: Finished difference Result 2672 states and 5138 transitions.
[2019-11-06 19:02:37,776 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-06 19:02:37,777 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 817
[2019-11-06 19:02:37,782 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:37,821 INFO  L225             Difference]: With dead ends: 2672
[2019-11-06 19:02:37,822 INFO  L226             Difference]: Without dead ends: 1702
[2019-11-06 19:02:37,839 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:02:37,864 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2019-11-06 19:02:38,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687.
[2019-11-06 19:02:38,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1687 states.
[2019-11-06 19:02:38,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3135 transitions.
[2019-11-06 19:02:38,050 INFO  L78                 Accepts]: Start accepts. Automaton has 1687 states and 3135 transitions. Word has length 817
[2019-11-06 19:02:38,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:38,054 INFO  L462      AbstractCegarLoop]: Abstraction has 1687 states and 3135 transitions.
[2019-11-06 19:02:38,054 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:02:38,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 1687 states and 3135 transitions.
[2019-11-06 19:02:38,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 826
[2019-11-06 19:02:38,084 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:38,085 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, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:38,085 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:38,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:38,086 INFO  L82        PathProgramCache]: Analyzing trace with hash -791035533, now seen corresponding path program 1 times
[2019-11-06 19:02:38,086 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:38,087 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517198956]
[2019-11-06 19:02:38,087 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:38,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:38,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:38,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:39,621 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 19:02:39,622 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517198956]
[2019-11-06 19:02:39,622 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747097990]
[2019-11-06 19:02:39,622 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 19:02:39,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:39,932 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-11-06 19:02:39,964 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:40,869 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 19:02:40,870 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:02:40,870 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-11-06 19:02:40,872 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509269120]
[2019-11-06 19:02:40,874 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:02:40,874 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:40,875 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:02:40,875 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:02:40,875 INFO  L87              Difference]: Start difference. First operand 1687 states and 3135 transitions. Second operand 3 states.
[2019-11-06 19:02:45,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:02:45,205 INFO  L93              Difference]: Finished difference Result 5047 states and 9446 transitions.
[2019-11-06 19:02:45,208 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:02:45,208 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 825
[2019-11-06 19:02:45,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:02:45,228 INFO  L225             Difference]: With dead ends: 5047
[2019-11-06 19:02:45,229 INFO  L226             Difference]: Without dead ends: 3366
[2019-11-06 19:02:45,234 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:02:45,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3366 states.
[2019-11-06 19:02:45,317 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366.
[2019-11-06 19:02:45,317 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3366 states.
[2019-11-06 19:02:45,333 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 5415 transitions.
[2019-11-06 19:02:45,333 INFO  L78                 Accepts]: Start accepts. Automaton has 3366 states and 5415 transitions. Word has length 825
[2019-11-06 19:02:45,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:02:45,335 INFO  L462      AbstractCegarLoop]: Abstraction has 3366 states and 5415 transitions.
[2019-11-06 19:02:45,335 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:02:45,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 3366 states and 5415 transitions.
[2019-11-06 19:02:45,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 872
[2019-11-06 19:02:45,357 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:02:45,359 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:02:45,565 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:02:45,566 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:02:45,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:02:45,567 INFO  L82        PathProgramCache]: Analyzing trace with hash -973251341, now seen corresponding path program 1 times
[2019-11-06 19:02:45,567 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:02:45,568 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441796146]
[2019-11-06 19:02:45,569 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:02:45,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:45,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:45,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:45,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:46,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:46,630 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-11-06 19:02:46,630 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441796146]
[2019-11-06 19:02:46,631 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900953976]
[2019-11-06 19:02:46,631 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:02:47,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:02:47,062 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:02:47,089 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:02:47,661 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-11-06 19:02:47,662 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:02:47,663 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-11-06 19:02:47,663 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333573302]
[2019-11-06 19:02:47,666 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-11-06 19:02:47,667 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:02:47,667 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-11-06 19:02:47,668 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:02:47,668 INFO  L87              Difference]: Start difference. First operand 3366 states and 5415 transitions. Second operand 11 states.