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/Problem10_label11.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:57:45,915 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:57:45,918 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:57:45,936 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:57:45,936 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:57:45,937 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:57:45,938 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 17:57:45,940 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 17:57:45,943 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 17:57:45,946 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 17:57:45,947 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 17:57:45,948 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 17:57:45,949 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 17:57:45,952 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 17:57:45,954 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 17:57:45,955 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:57:45,956 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:57:45,960 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:57:45,962 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:57:45,963 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:57:45,965 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:57:45,966 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:57:45,967 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:57:45,968 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:57:45,970 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 17:57:45,970 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 17:57:45,970 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 17:57:45,971 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 17:57:45,972 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 17:57:45,972 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 17:57:45,973 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 17:57:45,974 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 17:57:45,974 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 17:57:45,975 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 17:57:45,976 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 17:57:45,976 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 17:57:45,977 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 17:57:45,977 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 17:57:45,977 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 17:57:45,978 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 17:57:45,979 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 17:57:45,980 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
[2019-10-13 17:57:45,993 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:57:45,993 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:57:45,994 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:57:45,995 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:57:45,995 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:57:45,995 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:57:45,995 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:57:45,996 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:57:45,997 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:57:45,997 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:57:45,997 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:57:45,997 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:57:45,997 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:57:45,998 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:57:45,998 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:57:45,998 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:57:45,998 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:57:45,999 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:57:45,999 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:57:45,999 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:57:45,999 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:57:45,999 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:57:46,000 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:57:46,000 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:57:46,257 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:57:46,272 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:57:46,277 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:57:46,279 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:57:46,279 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:57:46,280 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c
[2019-10-13 17:57:46,348 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b877571cf/5ffe0c14e6e9447a8618ad489d1ef7e5/FLAG0ff62e7d3
[2019-10-13 17:57:46,903 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:57:46,907 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c
[2019-10-13 17:57:46,924 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b877571cf/5ffe0c14e6e9447a8618ad489d1ef7e5/FLAG0ff62e7d3
[2019-10-13 17:57:47,219 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b877571cf/5ffe0c14e6e9447a8618ad489d1ef7e5
[2019-10-13 17:57:47,228 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:57:47,229 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:57:47,230 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:57:47,230 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:57:47,234 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:57:47,235 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:47,237 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2323ddf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47, skipping insertion in model container
[2019-10-13 17:57:47,237 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:47,244 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:57:47,285 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:57:47,819 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:57:47,823 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:57:47,956 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:57:47,980 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:57:47,981 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47 WrapperNode
[2019-10-13 17:57:47,981 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:57:47,982 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:57:47,982 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:57:47,982 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:57:48,000 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,001 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,022 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,023 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,055 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,067 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,076 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (1/1) ...
[2019-10-13 17:57:48,093 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:57:48,094 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:57:48,094 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:57:48,094 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:57:48,095 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (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
[2019-10-13 17:57:48,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:57:48,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:57:48,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:57:48,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:57:48,161 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:57:48,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:57:48,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:57:48,162 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:57:48,162 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:57:48,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:57:48,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:57:49,450 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:57:49,450 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:57:49,451 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:57:49 BoogieIcfgContainer
[2019-10-13 17:57:49,452 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:57:49,453 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:57:49,453 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:57:49,456 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:57:49,457 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:57:47" (1/3) ...
[2019-10-13 17:57:49,457 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19496e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:57:49, skipping insertion in model container
[2019-10-13 17:57:49,458 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:57:47" (2/3) ...
[2019-10-13 17:57:49,458 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19496e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:57:49, skipping insertion in model container
[2019-10-13 17:57:49,458 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:57:49" (3/3) ...
[2019-10-13 17:57:49,460 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label11.c
[2019-10-13 17:57:49,469 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:57:49,478 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:57:49,489 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:57:49,515 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:57:49,516 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:57:49,516 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:57:49,516 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:57:49,516 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:57:49,516 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:57:49,517 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:57:49,517 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:57:49,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 215 states.
[2019-10-13 17:57:49,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2019-10-13 17:57:49,563 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:49,564 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, 1, 1, 1]
[2019-10-13 17:57:49,566 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:49,571 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:49,571 INFO  L82        PathProgramCache]: Analyzing trace with hash -1918215546, now seen corresponding path program 1 times
[2019-10-13 17:57:49,580 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:49,580 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965874893]
[2019-10-13 17:57:49,580 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:49,581 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:49,581 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:49,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:49,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:49,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:49,978 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965874893]
[2019-10-13 17:57:49,979 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:57:49,980 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:57:49,980 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698256662]
[2019-10-13 17:57:49,986 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:57:49,986 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:49,999 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:57:50,000 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:57:50,002 INFO  L87              Difference]: Start difference. First operand 215 states. Second operand 5 states.
[2019-10-13 17:57:51,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:57:51,903 INFO  L93              Difference]: Finished difference Result 730 states and 1301 transitions.
[2019-10-13 17:57:51,903 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:57:51,905 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 67
[2019-10-13 17:57:51,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:57:51,935 INFO  L225             Difference]: With dead ends: 730
[2019-10-13 17:57:51,936 INFO  L226             Difference]: Without dead ends: 447
[2019-10-13 17:57:51,948 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
[2019-10-13 17:57:51,966 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 447 states.
[2019-10-13 17:57:52,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441.
[2019-10-13 17:57:52,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 441 states.
[2019-10-13 17:57:52,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions.
[2019-10-13 17:57:52,046 INFO  L78                 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 67
[2019-10-13 17:57:52,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:57:52,048 INFO  L462      AbstractCegarLoop]: Abstraction has 441 states and 672 transitions.
[2019-10-13 17:57:52,049 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:57:52,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions.
[2019-10-13 17:57:52,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 187
[2019-10-13 17:57:52,060 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:52,061 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, 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]
[2019-10-13 17:57:52,061 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:52,062 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:52,062 INFO  L82        PathProgramCache]: Analyzing trace with hash 2016512505, now seen corresponding path program 1 times
[2019-10-13 17:57:52,062 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:52,062 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864279805]
[2019-10-13 17:57:52,063 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:52,063 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:52,063 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:52,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:52,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:52,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:52,440 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:52,440 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864279805]
[2019-10-13 17:57:52,440 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103498669]
[2019-10-13 17:57:52,441 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
[2019-10-13 17:57:52,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:52,538 INFO  L256         TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 17:57:52,559 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:57:52,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:52,659 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:57:52,659 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2019-10-13 17:57:52,659 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732508518]
[2019-10-13 17:57:52,663 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:57:52,664 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:52,664 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:57:52,665 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:57:52,665 INFO  L87              Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 5 states.
[2019-10-13 17:57:53,581 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:57:53,582 INFO  L93              Difference]: Finished difference Result 1031 states and 1586 transitions.
[2019-10-13 17:57:53,582 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:57:53,582 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 186
[2019-10-13 17:57:53,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:57:53,587 INFO  L225             Difference]: With dead ends: 1031
[2019-10-13 17:57:53,587 INFO  L226             Difference]: Without dead ends: 596
[2019-10-13 17:57:53,589 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2019-10-13 17:57:53,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 596 states.
[2019-10-13 17:57:53,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590.
[2019-10-13 17:57:53,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 590 states.
[2019-10-13 17:57:53,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 865 transitions.
[2019-10-13 17:57:53,627 INFO  L78                 Accepts]: Start accepts. Automaton has 590 states and 865 transitions. Word has length 186
[2019-10-13 17:57:53,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:57:53,628 INFO  L462      AbstractCegarLoop]: Abstraction has 590 states and 865 transitions.
[2019-10-13 17:57:53,628 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:57:53,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 590 states and 865 transitions.
[2019-10-13 17:57:53,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2019-10-13 17:57:53,634 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:53,634 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, 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]
[2019-10-13 17:57:53,847 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:57:53,848 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:53,848 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:53,849 INFO  L82        PathProgramCache]: Analyzing trace with hash 1760446162, now seen corresponding path program 1 times
[2019-10-13 17:57:53,849 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:53,850 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434954278]
[2019-10-13 17:57:53,851 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:53,851 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:53,851 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:53,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:53,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:54,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:54,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:54,204 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434954278]
[2019-10-13 17:57:54,204 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:57:54,204 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 17:57:54,205 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779990207]
[2019-10-13 17:57:54,205 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 17:57:54,209 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:54,210 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 17:57:54,212 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 17:57:54,212 INFO  L87              Difference]: Start difference. First operand 590 states and 865 transitions. Second operand 9 states.
[2019-10-13 17:57:56,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:57:56,196 INFO  L93              Difference]: Finished difference Result 1939 states and 3010 transitions.
[2019-10-13 17:57:56,197 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 17:57:56,197 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 193
[2019-10-13 17:57:56,198 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:57:56,215 INFO  L225             Difference]: With dead ends: 1939
[2019-10-13 17:57:56,215 INFO  L226             Difference]: Without dead ends: 1355
[2019-10-13 17:57:56,218 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2019-10-13 17:57:56,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1355 states.
[2019-10-13 17:57:56,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 894.
[2019-10-13 17:57:56,286 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 894 states.
[2019-10-13 17:57:56,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1190 transitions.
[2019-10-13 17:57:56,294 INFO  L78                 Accepts]: Start accepts. Automaton has 894 states and 1190 transitions. Word has length 193
[2019-10-13 17:57:56,296 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:57:56,296 INFO  L462      AbstractCegarLoop]: Abstraction has 894 states and 1190 transitions.
[2019-10-13 17:57:56,296 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 17:57:56,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 894 states and 1190 transitions.
[2019-10-13 17:57:56,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 257
[2019-10-13 17:57:56,305 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:57:56,306 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 17:57:56,306 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:57:56,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:57:56,307 INFO  L82        PathProgramCache]: Analyzing trace with hash -1807493347, now seen corresponding path program 1 times
[2019-10-13 17:57:56,307 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:57:56,307 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977693566]
[2019-10-13 17:57:56,308 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:56,308 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:57:56,308 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:57:56,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:56,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:56,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:56,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:56,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 17:57:56,875 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977693566]
[2019-10-13 17:57:56,876 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982461067]
[2019-10-13 17:57:56,876 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
[2019-10-13 17:57:56,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:57:56,954 INFO  L256         TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:57:56,961 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:57:57,020 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:57:57,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 190 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:57:57,082 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:57:57,082 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15
[2019-10-13 17:57:57,082 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000432666]
[2019-10-13 17:57:57,083 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 15 states
[2019-10-13 17:57:57,084 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:57:57,084 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2019-10-13 17:57:57,084 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210
[2019-10-13 17:57:57,084 INFO  L87              Difference]: Start difference. First operand 894 states and 1190 transitions. Second operand 15 states.
[2019-10-13 17:58:01,424 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:58:01,425 INFO  L93              Difference]: Finished difference Result 2114 states and 2917 transitions.
[2019-10-13 17:58:01,425 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. 
[2019-10-13 17:58:01,425 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 256
[2019-10-13 17:58:01,426 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:58:01,438 INFO  L225             Difference]: With dead ends: 2114
[2019-10-13 17:58:01,438 INFO  L226             Difference]: Without dead ends: 1369
[2019-10-13 17:58:01,442 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070
[2019-10-13 17:58:01,443 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1369 states.
[2019-10-13 17:58:01,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1051.
[2019-10-13 17:58:01,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1051 states.
[2019-10-13 17:58:01,537 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1323 transitions.
[2019-10-13 17:58:01,537 INFO  L78                 Accepts]: Start accepts. Automaton has 1051 states and 1323 transitions. Word has length 256
[2019-10-13 17:58:01,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:58:01,538 INFO  L462      AbstractCegarLoop]: Abstraction has 1051 states and 1323 transitions.
[2019-10-13 17:58:01,538 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2019-10-13 17:58:01,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 1051 states and 1323 transitions.
[2019-10-13 17:58:01,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2019-10-13 17:58:01,544 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:58:01,544 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2019-10-13 17:58:01,748 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:01,748 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:58:01,748 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:58:01,749 INFO  L82        PathProgramCache]: Analyzing trace with hash 854527778, now seen corresponding path program 1 times
[2019-10-13 17:58:01,749 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:58:01,749 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926571691]
[2019-10-13 17:58:01,749 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:01,750 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:01,750 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:58:01,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:01,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:01,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:01,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:02,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 17:58:02,049 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926571691]
[2019-10-13 17:58:02,049 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898715743]
[2019-10-13 17:58:02,049 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:02,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:02,142 INFO  L256         TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:58:02,150 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:58:02,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:58:02,220 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:58:02,220 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-13 17:58:02,220 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635451767]
[2019-10-13 17:58:02,222 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 17:58:02,222 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:58:02,222 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 17:58:02,222 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:58:02,222 INFO  L87              Difference]: Start difference. First operand 1051 states and 1323 transitions. Second operand 11 states.
[2019-10-13 17:58:05,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:58:05,325 INFO  L93              Difference]: Finished difference Result 3243 states and 4611 transitions.
[2019-10-13 17:58:05,326 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2019-10-13 17:58:05,326 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 271
[2019-10-13 17:58:05,326 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:58:05,335 INFO  L225             Difference]: With dead ends: 3243
[2019-10-13 17:58:05,336 INFO  L226             Difference]: Without dead ends: 1258
[2019-10-13 17:58:05,344 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380
[2019-10-13 17:58:05,346 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1258 states.
[2019-10-13 17:58:05,386 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1228.
[2019-10-13 17:58:05,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1228 states.
[2019-10-13 17:58:05,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1503 transitions.
[2019-10-13 17:58:05,395 INFO  L78                 Accepts]: Start accepts. Automaton has 1228 states and 1503 transitions. Word has length 271
[2019-10-13 17:58:05,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:58:05,399 INFO  L462      AbstractCegarLoop]: Abstraction has 1228 states and 1503 transitions.
[2019-10-13 17:58:05,399 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 17:58:05,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 1228 states and 1503 transitions.
[2019-10-13 17:58:05,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 282
[2019-10-13 17:58:05,406 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:58:05,406 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2019-10-13 17:58:05,613 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:05,614 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:58:05,614 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:58:05,614 INFO  L82        PathProgramCache]: Analyzing trace with hash -550746410, now seen corresponding path program 1 times
[2019-10-13 17:58:05,614 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:58:05,614 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919077626]
[2019-10-13 17:58:05,615 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:05,615 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:05,615 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:58:05,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:05,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:05,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:05,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:05,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 120 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 17:58:05,876 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919077626]
[2019-10-13 17:58:05,876 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132380159]
[2019-10-13 17:58:05,876 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:05,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:05,998 INFO  L256         TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 17:58:06,004 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:58:06,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2019-10-13 17:58:06,137 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:58:06,138 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 17:58:06,138 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827012185]
[2019-10-13 17:58:06,139 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:58:06,140 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:58:06,140 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:58:06,140 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:58:06,140 INFO  L87              Difference]: Start difference. First operand 1228 states and 1503 transitions. Second operand 5 states.
[2019-10-13 17:58:07,017 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:58:07,017 INFO  L93              Difference]: Finished difference Result 2281 states and 2775 transitions.
[2019-10-13 17:58:07,018 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:58:07,018 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 281
[2019-10-13 17:58:07,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:58:07,025 INFO  L225             Difference]: With dead ends: 2281
[2019-10-13 17:58:07,025 INFO  L226             Difference]: Without dead ends: 1218
[2019-10-13 17:58:07,029 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 17:58:07,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1218 states.
[2019-10-13 17:58:07,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1196.
[2019-10-13 17:58:07,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1196 states.
[2019-10-13 17:58:07,059 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1370 transitions.
[2019-10-13 17:58:07,060 INFO  L78                 Accepts]: Start accepts. Automaton has 1196 states and 1370 transitions. Word has length 281
[2019-10-13 17:58:07,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:58:07,060 INFO  L462      AbstractCegarLoop]: Abstraction has 1196 states and 1370 transitions.
[2019-10-13 17:58:07,060 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:58:07,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 1196 states and 1370 transitions.
[2019-10-13 17:58:07,068 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 379
[2019-10-13 17:58:07,068 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:58:07,069 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2019-10-13 17:58:07,272 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:07,272 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:58:07,273 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:58:07,273 INFO  L82        PathProgramCache]: Analyzing trace with hash 348873925, now seen corresponding path program 1 times
[2019-10-13 17:58:07,273 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:58:07,273 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788950264]
[2019-10-13 17:58:07,274 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:07,274 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:58:07,274 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:58:07,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:07,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:07,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:07,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:07,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:08,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 449 backedges. 305 proven. 71 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2019-10-13 17:58:08,645 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788950264]
[2019-10-13 17:58:08,645 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839250923]
[2019-10-13 17:58:08,645 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:58:08,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:58:08,753 INFO  L256         TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-10-13 17:58:08,758 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:58:08,793 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,794 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,795 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,797 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,798 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,799 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,799 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:08,801 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:14,951 WARN  L191               SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 49 DAG size of output: 36
[2019-10-13 17:58:15,005 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-13 17:58:15,108 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 17:58:15,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 449 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2019-10-13 17:58:15,286 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:58:15,286 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 24
[2019-10-13 17:58:15,287 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240412658]
[2019-10-13 17:58:15,288 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 24 states
[2019-10-13 17:58:15,289 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:58:15,289 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2019-10-13 17:58:15,289 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552
[2019-10-13 17:58:15,290 INFO  L87              Difference]: Start difference. First operand 1196 states and 1370 transitions. Second operand 24 states.