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_label12.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:00:05,308 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 22:00:05,310 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 22:00:05,322 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 22:00:05,323 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-14 22:00:05,324 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-14 22:00:05,325 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-14 22:00:05,327 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-14 22:00:05,329 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-14 22:00:05,330 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-14 22:00:05,331 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-14 22:00:05,332 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-14 22:00:05,332 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-14 22:00:05,333 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-14 22:00:05,334 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-14 22:00:05,337 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-14 22:00:05,338 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 22:00:05,338 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 22:00:05,340 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 22:00:05,344 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-14 22:00:05,348 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-14 22:00:05,349 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-14 22:00:05,353 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 22:00:05,354 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 22:00:05,357 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-14 22:00:05,357 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-14 22:00:05,358 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-14 22:00:05,360 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-14 22:00:05,361 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-14 22:00:05,363 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-14 22:00:05,363 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-14 22:00:05,364 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-14 22:00:05,365 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-14 22:00:05,366 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-14 22:00:05,369 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-14 22:00:05,370 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-14 22:00:05,370 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-14 22:00:05,371 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-14 22:00:05,371 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-14 22:00:05,373 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-14 22:00:05,376 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 22:00:05,377 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 22:00:05,397 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:00:05,397 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:00:05,400 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:00:05,400 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:00:05,400 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:00:05,400 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:00:05,401 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:00:05,401 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:00:05,401 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:00:05,401 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:00:05,402 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:00:05,402 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:00:05,403 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:00:05,403 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:00:05,403 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:00:05,404 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:00:05,404 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:00:05,404 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:00:05,404 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:00:05,404 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:00:05,405 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:00:05,405 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:00:05,405 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:00:05,405 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:00:05,405 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:00:05,405 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:00:05,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:00:05,406 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:00:05,406 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:00:05,690 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:00:05,703 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:00:05,707 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:00:05,709 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:00:05,709 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:00:05,710 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c
[2019-10-14 22:00:05,788 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d7603c7/32fdf428e3fc463dbae4b854ad3b6f4e/FLAGf7966b177
[2019-10-14 22:00:06,558 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:00:06,559 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c
[2019-10-14 22:00:06,592 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d7603c7/32fdf428e3fc463dbae4b854ad3b6f4e/FLAGf7966b177
[2019-10-14 22:00:06,616 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d7603c7/32fdf428e3fc463dbae4b854ad3b6f4e
[2019-10-14 22:00:06,628 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:00:06,630 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:00:06,632 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:06,633 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:00:06,636 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:00:06,637 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:06" (1/1) ...
[2019-10-14 22:00:06,641 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e9c6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:06, skipping insertion in model container
[2019-10-14 22:00:06,641 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:06" (1/1) ...
[2019-10-14 22:00:06,650 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:00:06,796 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:00:08,398 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:08,403 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:00:09,192 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:00:09,225 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:00:09,226 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09 WrapperNode
[2019-10-14 22:00:09,227 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:00:09,228 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:00:09,228 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:00:09,228 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:00:09,244 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,244 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,303 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,304 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,395 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,425 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,450 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (1/1) ...
[2019-10-14 22:00:09,491 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:00:09,492 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:00:09,492 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:00:09,492 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:00:09,494 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (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 22:00:09,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:00:09,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:00:09,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:00:09,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:00:09,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 22:00:09,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 22:00:09,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:00:09,567 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:00:09,567 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:00:09,567 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 22:00:09,569 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 22:00:09,569 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:00:09,569 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:00:09,570 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:00:09,571 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:00:09,571 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:00:09,572 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:00:14,672 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:00:14,672 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:00:14,678 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:14 BoogieIcfgContainer
[2019-10-14 22:00:14,678 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:00:14,680 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:00:14,680 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:00:14,684 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:00:14,684 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:06" (1/3) ...
[2019-10-14 22:00:14,685 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e683ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:14, skipping insertion in model container
[2019-10-14 22:00:14,686 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:09" (2/3) ...
[2019-10-14 22:00:14,686 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e683ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:14, skipping insertion in model container
[2019-10-14 22:00:14,687 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:14" (3/3) ...
[2019-10-14 22:00:14,696 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label12.c
[2019-10-14 22:00:14,709 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:00:14,720 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:00:14,732 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:00:14,782 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:00:14,782 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:00:14,782 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:00:14,783 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:00:14,783 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:00:14,783 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:00:14,783 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:00:14,783 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:00:14,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-10-14 22:00:14,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2019-10-14 22:00:14,838 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:14,840 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:00:14,842 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:14,847 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:14,848 INFO  L82        PathProgramCache]: Analyzing trace with hash -1107355747, now seen corresponding path program 1 times
[2019-10-14 22:00:14,857 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:14,857 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119064516]
[2019-10-14 22:00:14,858 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:14,858 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:14,859 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:15,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:15,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:15,299 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 22:00:15,300 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119064516]
[2019-10-14 22:00:15,301 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:15,301 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:00:15,302 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920382902]
[2019-10-14 22:00:15,308 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:00:15,308 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:15,323 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:00:15,324 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:00:15,327 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-10-14 22:00:27,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:00:27,181 INFO  L93              Difference]: Finished difference Result 3253 states and 6293 transitions.
[2019-10-14 22:00:27,182 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:00:27,183 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 64
[2019-10-14 22:00:27,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:00:27,222 INFO  L225             Difference]: With dead ends: 3253
[2019-10-14 22:00:27,223 INFO  L226             Difference]: Without dead ends: 2346
[2019-10-14 22:00:27,233 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:00:27,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2346 states.
[2019-10-14 22:00:27,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331.
[2019-10-14 22:00:27,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2331 states.
[2019-10-14 22:00:27,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3834 transitions.
[2019-10-14 22:00:27,401 INFO  L78                 Accepts]: Start accepts. Automaton has 2331 states and 3834 transitions. Word has length 64
[2019-10-14 22:00:27,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:00:27,402 INFO  L462      AbstractCegarLoop]: Abstraction has 2331 states and 3834 transitions.
[2019-10-14 22:00:27,402 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:00:27,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 2331 states and 3834 transitions.
[2019-10-14 22:00:27,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-14 22:00:27,410 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:27,410 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 22:00:27,410 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:27,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:27,411 INFO  L82        PathProgramCache]: Analyzing trace with hash -1291094684, now seen corresponding path program 1 times
[2019-10-14 22:00:27,411 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:27,411 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187533461]
[2019-10-14 22:00:27,411 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:27,412 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:27,412 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:27,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:27,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:27,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:27,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:00:27,725 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187533461]
[2019-10-14 22:00:27,726 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:27,726 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 22:00:27,726 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950291671]
[2019-10-14 22:00:27,730 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 22:00:27,731 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:27,731 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 22:00:27,731 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 22:00:27,731 INFO  L87              Difference]: Start difference. First operand 2331 states and 3834 transitions. Second operand 9 states.
[2019-10-14 22:00:37,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:00:37,811 INFO  L93              Difference]: Finished difference Result 7110 states and 11893 transitions.
[2019-10-14 22:00:37,812 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 22:00:37,813 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 142
[2019-10-14 22:00:37,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:00:37,842 INFO  L225             Difference]: With dead ends: 7110
[2019-10-14 22:00:37,842 INFO  L226             Difference]: Without dead ends: 4785
[2019-10-14 22:00:37,849 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-10-14 22:00:37,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4785 states.
[2019-10-14 22:00:37,977 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4725.
[2019-10-14 22:00:37,978 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4725 states.
[2019-10-14 22:00:37,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7715 transitions.
[2019-10-14 22:00:37,996 INFO  L78                 Accepts]: Start accepts. Automaton has 4725 states and 7715 transitions. Word has length 142
[2019-10-14 22:00:37,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:00:37,997 INFO  L462      AbstractCegarLoop]: Abstraction has 4725 states and 7715 transitions.
[2019-10-14 22:00:37,998 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 22:00:37,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 4725 states and 7715 transitions.
[2019-10-14 22:00:38,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-10-14 22:00:38,002 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:00:38,002 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:38,002 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:00:38,002 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:00:38,003 INFO  L82        PathProgramCache]: Analyzing trace with hash 1404633668, now seen corresponding path program 1 times
[2019-10-14 22:00:38,003 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:00:38,003 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953764895]
[2019-10-14 22:00:38,003 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:38,004 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:00:38,004 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:00:38,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:38,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:38,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:00:38,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:00:38,309 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953764895]
[2019-10-14 22:00:38,310 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:00:38,313 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-14 22:00:38,315 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290275822]
[2019-10-14 22:00:38,317 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-14 22:00:38,317 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:00:38,326 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-14 22:00:38,326 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:00:38,327 INFO  L87              Difference]: Start difference. First operand 4725 states and 7715 transitions. Second operand 7 states.