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/Problem12_label49.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:00:45,032 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 22:00:45,034 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 22:00:45,047 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 22:00:45,048 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-14 22:00:45,049 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-14 22:00:45,050 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-14 22:00:45,052 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-14 22:00:45,054 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-14 22:00:45,055 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-14 22:00:45,056 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-14 22:00:45,057 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-14 22:00:45,057 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-14 22:00:45,058 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-14 22:00:45,059 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-14 22:00:45,060 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-14 22:00:45,061 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 22:00:45,062 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 22:00:45,064 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 22:00:45,066 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-14 22:00:45,068 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-14 22:00:45,069 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-14 22:00:45,070 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 22:00:45,071 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 22:00:45,077 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-14 22:00:45,078 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-14 22:00:45,078 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-14 22:00:45,079 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-14 22:00:45,080 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-14 22:00:45,081 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-14 22:00:45,082 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-14 22:00:45,083 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-14 22:00:45,084 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-14 22:00:45,085 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-14 22:00:45,086 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-14 22:00:45,087 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-14 22:00:45,087 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-14 22:00:45,087 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-14 22:00:45,088 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-14 22:00:45,088 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-14 22:00:45,089 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 22:00:45,090 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 22:00:45,104 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:00:45,105 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:00:45,106 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:00:45,106 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:00:45,107 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:00:45,107 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:00:45,107 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:00:45,107 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:00:45,107 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:00:45,108 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:00:45,109 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:00:45,109 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:00:45,109 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:00:45,109 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:00:45,110 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:00:45,110 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:00:45,110 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:00:45,110 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:00:45,110 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:00:45,111 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:00:45,111 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:00:45,111 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:00:45,111 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:00:45,111 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:00:45,391 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:00:45,412 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:00:45,416 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:00:45,417 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:00:45,418 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:00:45,419 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c
[2019-10-14 22:00:45,494 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bad695e/c18730b0cf9d476d9c49f7f41c0612e8/FLAGabbee6ef7
[2019-10-14 22:00:46,282 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:00:46,284 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c
[2019-10-14 22:00:46,325 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bad695e/c18730b0cf9d476d9c49f7f41c0612e8/FLAGabbee6ef7
[2019-10-14 22:00:46,355 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5bad695e/c18730b0cf9d476d9c49f7f41c0612e8
[2019-10-14 22:00:46,366 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:00:46,368 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:00:46,371 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:46,372 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:00:46,376 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:00:46,377 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:46" (1/1) ...
[2019-10-14 22:00:46,381 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2621afd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:46, skipping insertion in model container
[2019-10-14 22:00:46,381 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:46" (1/1) ...
[2019-10-14 22:00:46,392 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:00:46,551 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:00:48,248 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:48,258 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:00:48,936 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:48,965 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:00:48,966 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48 WrapperNode
[2019-10-14 22:00:48,966 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:48,967 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:00:48,967 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:00:48,968 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:00:48,982 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:48,982 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,039 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,042 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,152 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,183 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,211 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
[2019-10-14 22:00:49,237 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:00:49,237 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:00:49,237 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:00:49,238 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:00:49,239 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:00:49,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:00:49,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:00:49,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:00:49,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:00:49,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 22:00:49,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 22:00:49,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:00:49,307 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:00:49,307 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:00:49,307 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 22:00:49,307 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 22:00:49,307 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:00:49,308 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:00:49,308 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:00:49,308 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:00:49,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:00:49,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:00:54,344 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:00:54,345 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:00:54,348 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:54 BoogieIcfgContainer
[2019-10-14 22:00:54,348 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:00:54,350 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:00:54,350 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:00:54,353 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:00:54,353 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:46" (1/3) ...
[2019-10-14 22:00:54,354 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66238980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:54, skipping insertion in model container
[2019-10-14 22:00:54,354 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:48" (2/3) ...
[2019-10-14 22:00:54,355 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66238980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:54, skipping insertion in model container
[2019-10-14 22:00:54,355 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:54" (3/3) ...
[2019-10-14 22:00:54,357 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label49.c
[2019-10-14 22:00:54,368 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:00:54,380 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:00:54,394 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:00:54,446 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:00:54,447 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:00:54,447 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:00:54,447 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:00:54,447 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:00:54,447 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:00:54,448 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:00:54,448 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:00:54,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-10-14 22:00:54,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2019-10-14 22:00:54,502 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:54,503 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:00:54,507 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:54,513 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:54,514 INFO  L82        PathProgramCache]: Analyzing trace with hash 838851165, now seen corresponding path program 1 times
[2019-10-14 22:00:54,523 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:54,524 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478280558]
[2019-10-14 22:00:54,524 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:54,524 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:54,524 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:54,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:54,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:55,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:00:55,017 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478280558]
[2019-10-14 22:00:55,019 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:55,019 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:00:55,020 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654246852]
[2019-10-14 22:00:55,025 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:00:55,026 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:55,041 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:00:55,042 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:00:55,045 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-10-14 22:01:03,533 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:01:03,534 INFO  L93              Difference]: Finished difference Result 2471 states and 4736 transitions.
[2019-10-14 22:01:03,534 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 22:01:03,535 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 48
[2019-10-14 22:01:03,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:01:03,579 INFO  L225             Difference]: With dead ends: 2471
[2019-10-14 22:01:03,579 INFO  L226             Difference]: Without dead ends: 1568
[2019-10-14 22:01:03,591 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-10-14 22:01:03,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1568 states.
[2019-10-14 22:01:03,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553.
[2019-10-14 22:01:03,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1553 states.
[2019-10-14 22:01:03,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions.
[2019-10-14 22:01:03,755 INFO  L78                 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 48
[2019-10-14 22:01:03,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:01:03,756 INFO  L462      AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions.
[2019-10-14 22:01:03,756 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:01:03,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions.
[2019-10-14 22:01:03,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2019-10-14 22:01:03,776 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:01:03,777 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:01:03,778 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:01:03,779 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:01:03,779 INFO  L82        PathProgramCache]: Analyzing trace with hash 728529281, now seen corresponding path program 1 times
[2019-10-14 22:01:03,780 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:01:03,780 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665779578]
[2019-10-14 22:01:03,780 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:01:03,781 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:01:03,781 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:01:03,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:03,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:04,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:04,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:01:04,166 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665779578]
[2019-10-14 22:01:04,167 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:01:04,167 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 22:01:04,167 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711629522]
[2019-10-14 22:01:04,173 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 22:01:04,173 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:01:04,174 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 22:01:04,174 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:01:04,174 INFO  L87              Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand 9 states.
[2019-10-14 22:01:17,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:01:17,548 INFO  L93              Difference]: Finished difference Result 6335 states and 11853 transitions.
[2019-10-14 22:01:17,548 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-14 22:01:17,549 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 125
[2019-10-14 22:01:17,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:01:17,578 INFO  L225             Difference]: With dead ends: 6335
[2019-10-14 22:01:17,578 INFO  L226             Difference]: Without dead ends: 4788
[2019-10-14 22:01:17,584 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2019-10-14 22:01:17,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4788 states.
[2019-10-14 22:01:17,718 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4748.
[2019-10-14 22:01:17,719 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4748 states.
[2019-10-14 22:01:17,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 7752 transitions.
[2019-10-14 22:01:17,748 INFO  L78                 Accepts]: Start accepts. Automaton has 4748 states and 7752 transitions. Word has length 125
[2019-10-14 22:01:17,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:01:17,750 INFO  L462      AbstractCegarLoop]: Abstraction has 4748 states and 7752 transitions.
[2019-10-14 22:01:17,751 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 22:01:17,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 4748 states and 7752 transitions.
[2019-10-14 22:01:17,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2019-10-14 22:01:17,758 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:01:17,759 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:01:17,759 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:01:17,760 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:01:17,760 INFO  L82        PathProgramCache]: Analyzing trace with hash -1145162067, now seen corresponding path program 1 times
[2019-10-14 22:01:17,761 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:01:17,761 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118079808]
[2019-10-14 22:01:17,761 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:01:17,761 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:01:17,761 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:01:17,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:17,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:18,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:01:18,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:01:18,146 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118079808]
[2019-10-14 22:01:18,147 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:01:18,147 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-14 22:01:18,147 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114115410]
[2019-10-14 22:01:18,148 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-14 22:01:18,148 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:01:18,148 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-14 22:01:18,149 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:01:18,149 INFO  L87              Difference]: Start difference. First operand 4748 states and 7752 transitions. Second operand 7 states.