java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 18:29:02,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 18:29:02,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 18:29:02,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 18:29:02,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 18:29:02,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 18:29:02,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 18:29:02,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 18:29:02,893 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 18:29:02,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 18:29:02,895 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 18:29:02,895 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 18:29:02,896 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 18:29:02,897 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 18:29:02,898 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 18:29:02,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 18:29:02,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 18:29:02,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 18:29:02,909 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 18:29:02,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 18:29:02,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 18:29:02,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 18:29:02,923 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 18:29:02,923 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 18:29:02,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 18:29:02,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 18:29:02,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 18:29:02,929 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 18:29:02,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 18:29:02,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 18:29:02,931 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 18:29:02,934 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 18:29:02,935 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 18:29:02,935 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 18:29:02,938 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 18:29:02,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 18:29:02,939 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 18:29:02,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 18:29:02,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 18:29:02,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 18:29:02,968 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 18:29:02,969 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 18:29:02,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 18:29:02,969 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 18:29:02,969 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 18:29:02,973 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 18:29:02,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 18:29:02,974 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 18:29:02,974 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 18:29:02,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 18:29:02,974 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 18:29:02,974 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 18:29:02,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 18:29:02,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 18:29:02,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 18:29:02,975 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 18:29:02,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 18:29:02,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 18:29:02,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 18:29:02,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 18:29:02,976 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 18:29:02,977 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 18:29:02,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 18:29:02,977 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 18:29:02,977 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 18:29:03,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 18:29:03,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 18:29:03,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 18:29:03,054 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 18:29:03,054 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 18:29:03,055 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58_false-unreach-call_false-termination.c [2018-10-26 18:29:03,127 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00fdf74ac/16e15382c0eb425bace259001d751d27/FLAG66e92964b [2018-10-26 18:29:03,984 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 18:29:03,986 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label58_false-unreach-call_false-termination.c [2018-10-26 18:29:04,034 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00fdf74ac/16e15382c0eb425bace259001d751d27/FLAG66e92964b [2018-10-26 18:29:04,055 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00fdf74ac/16e15382c0eb425bace259001d751d27 [2018-10-26 18:29:04,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 18:29:04,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 18:29:04,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 18:29:04,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 18:29:04,081 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 18:29:04,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:29:04" (1/1) ... [2018-10-26 18:29:04,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769766bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:04, skipping insertion in model container [2018-10-26 18:29:04,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:29:04" (1/1) ... [2018-10-26 18:29:04,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 18:29:04,274 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 18:29:05,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 18:29:05,703 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 18:29:06,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 18:29:06,399 INFO L193 MainTranslator]: Completed translation [2018-10-26 18:29:06,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06 WrapperNode [2018-10-26 18:29:06,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 18:29:06,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 18:29:06,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 18:29:06,401 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 18:29:06,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:06,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:06,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 18:29:06,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 18:29:06,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 18:29:06,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 18:29:06,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:06,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:06,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:06,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:07,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:07,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:07,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... [2018-10-26 18:29:07,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 18:29:07,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 18:29:07,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 18:29:07,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 18:29:07,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 18:29:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 18:29:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 18:29:07,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 18:29:16,057 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 18:29:16,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:29:16 BoogieIcfgContainer [2018-10-26 18:29:16,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 18:29:16,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 18:29:16,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 18:29:16,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 18:29:16,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 06:29:04" (1/3) ... [2018-10-26 18:29:16,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5472b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:29:16, skipping insertion in model container [2018-10-26 18:29:16,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:29:06" (2/3) ... [2018-10-26 18:29:16,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5472b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:29:16, skipping insertion in model container [2018-10-26 18:29:16,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:29:16" (3/3) ... [2018-10-26 18:29:16,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label58_false-unreach-call_false-termination.c [2018-10-26 18:29:16,080 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 18:29:16,090 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 18:29:16,111 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 18:29:16,155 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 18:29:16,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 18:29:16,156 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 18:29:16,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 18:29:16,156 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 18:29:16,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 18:29:16,156 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 18:29:16,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 18:29:16,156 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 18:29:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-26 18:29:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2018-10-26 18:29:16,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:29:16,242 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:29:16,244 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:29:16,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:29:16,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1111480725, now seen corresponding path program 1 times [2018-10-26 18:29:16,254 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:29:16,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:29:16,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:16,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:29:16,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:29:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 18:29:19,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:29:19,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 18:29:19,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:29:19,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:29:19,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:29:19,647 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 4 states. [2018-10-26 18:29:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:29:32,918 INFO L93 Difference]: Finished difference Result 3414 states and 6666 transitions. [2018-10-26 18:29:32,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:29:32,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 763 [2018-10-26 18:29:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:29:32,965 INFO L225 Difference]: With dead ends: 3414 [2018-10-26 18:29:32,965 INFO L226 Difference]: Without dead ends: 2521 [2018-10-26 18:29:32,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:29:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2018-10-26 18:29:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2018-10-26 18:29:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2018-10-26 18:29:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 4269 transitions. [2018-10-26 18:29:33,146 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 4269 transitions. Word has length 763 [2018-10-26 18:29:33,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:29:33,151 INFO L481 AbstractCegarLoop]: Abstraction has 2521 states and 4269 transitions. [2018-10-26 18:29:33,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:29:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 4269 transitions. [2018-10-26 18:29:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-10-26 18:29:33,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:29:33,177 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:29:33,178 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:29:33,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:29:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1097636257, now seen corresponding path program 1 times [2018-10-26 18:29:33,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:29:33,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:29:33,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:33,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:29:33,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:29:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 18:29:33,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:29:33,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:29:33,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 18:29:33,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 18:29:33,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 18:29:33,738 INFO L87 Difference]: Start difference. First operand 2521 states and 4269 transitions. Second operand 5 states. [2018-10-26 18:29:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:29:45,245 INFO L93 Difference]: Finished difference Result 9954 states and 16948 transitions. [2018-10-26 18:29:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:29:45,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 771 [2018-10-26 18:29:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:29:45,281 INFO L225 Difference]: With dead ends: 9954 [2018-10-26 18:29:45,281 INFO L226 Difference]: Without dead ends: 7435 [2018-10-26 18:29:45,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 18:29:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2018-10-26 18:29:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7435. [2018-10-26 18:29:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2018-10-26 18:29:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11103 transitions. [2018-10-26 18:29:45,427 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11103 transitions. Word has length 771 [2018-10-26 18:29:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:29:45,427 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 11103 transitions. [2018-10-26 18:29:45,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 18:29:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11103 transitions. [2018-10-26 18:29:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2018-10-26 18:29:45,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:29:45,449 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:29:45,449 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:29:45,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:29:45,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1418480622, now seen corresponding path program 1 times [2018-10-26 18:29:45,450 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:29:45,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:29:45,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:45,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:29:45,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:29:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 18:29:46,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:29:46,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 18:29:46,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:29:46,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:29:46,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:29:46,147 INFO L87 Difference]: Start difference. First operand 7435 states and 11103 transitions. Second operand 4 states. [2018-10-26 18:29:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:29:53,864 INFO L93 Difference]: Finished difference Result 29610 states and 44284 transitions. [2018-10-26 18:29:53,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:29:53,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 777 [2018-10-26 18:29:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:29:53,946 INFO L225 Difference]: With dead ends: 29610 [2018-10-26 18:29:53,946 INFO L226 Difference]: Without dead ends: 22177 [2018-10-26 18:29:53,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:29:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2018-10-26 18:29:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22177. [2018-10-26 18:29:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2018-10-26 18:29:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 28776 transitions. [2018-10-26 18:29:54,409 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 28776 transitions. Word has length 777 [2018-10-26 18:29:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:29:54,410 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 28776 transitions. [2018-10-26 18:29:54,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:29:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 28776 transitions. [2018-10-26 18:29:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-10-26 18:29:54,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:29:54,454 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:29:54,454 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:29:54,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:29:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1964164099, now seen corresponding path program 1 times [2018-10-26 18:29:54,455 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:29:54,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:29:54,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:54,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:29:54,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:29:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:29:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 18:29:55,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:29:55,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 18:29:55,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 18:29:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 18:29:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 18:29:55,119 INFO L87 Difference]: Start difference. First operand 22177 states and 28776 transitions. Second operand 3 states. [2018-10-26 18:29:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:29:59,462 INFO L93 Difference]: Finished difference Result 46809 states and 61276 transitions. [2018-10-26 18:29:59,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 18:29:59,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 784 [2018-10-26 18:29:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:29:59,528 INFO L225 Difference]: With dead ends: 46809 [2018-10-26 18:29:59,529 INFO L226 Difference]: Without dead ends: 24634 [2018-10-26 18:29:59,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 18:29:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24634 states. [2018-10-26 18:29:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24634 to 24634. [2018-10-26 18:29:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24634 states. [2018-10-26 18:29:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24634 states to 24634 states and 31581 transitions. [2018-10-26 18:29:59,962 INFO L78 Accepts]: Start accepts. Automaton has 24634 states and 31581 transitions. Word has length 784 [2018-10-26 18:29:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:29:59,963 INFO L481 AbstractCegarLoop]: Abstraction has 24634 states and 31581 transitions. [2018-10-26 18:29:59,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 18:29:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 24634 states and 31581 transitions. [2018-10-26 18:30:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-10-26 18:30:00,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:30:00,014 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:30:00,014 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:30:00,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:30:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1902452076, now seen corresponding path program 1 times [2018-10-26 18:30:00,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:30:00,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:30:00,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:00,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:00,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 18:30:00,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 18:30:00,868 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 18:30:00,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:01,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 18:30:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 18:30:01,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 18:30:01,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 18:30:01,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 18:30:01,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 18:30:01,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 18:30:01,876 INFO L87 Difference]: Start difference. First operand 24634 states and 31581 transitions. Second operand 5 states. [2018-10-26 18:30:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:30:14,730 INFO L93 Difference]: Finished difference Result 112329 states and 145946 transitions. [2018-10-26 18:30:14,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 18:30:14,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 790 [2018-10-26 18:30:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:30:14,941 INFO L225 Difference]: With dead ends: 112329 [2018-10-26 18:30:14,941 INFO L226 Difference]: Without dead ends: 87697 [2018-10-26 18:30:14,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 789 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 18:30:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2018-10-26 18:30:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 87697. [2018-10-26 18:30:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87697 states. [2018-10-26 18:30:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87697 states to 87697 states and 104417 transitions. [2018-10-26 18:30:16,225 INFO L78 Accepts]: Start accepts. Automaton has 87697 states and 104417 transitions. Word has length 790 [2018-10-26 18:30:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:30:16,225 INFO L481 AbstractCegarLoop]: Abstraction has 87697 states and 104417 transitions. [2018-10-26 18:30:16,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 18:30:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 87697 states and 104417 transitions. [2018-10-26 18:30:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2018-10-26 18:30:16,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:30:16,293 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:30:16,293 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:30:16,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:30:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1473495048, now seen corresponding path program 1 times [2018-10-26 18:30:16,294 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:30:16,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:30:16,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:16,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:16,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 18:30:17,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:30:17,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:30:17,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:30:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:30:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:17,873 INFO L87 Difference]: Start difference. First operand 87697 states and 104417 transitions. Second operand 4 states. [2018-10-26 18:30:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:30:25,863 INFO L93 Difference]: Finished difference Result 174573 states and 208001 transitions. [2018-10-26 18:30:25,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:30:25,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 870 [2018-10-26 18:30:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:30:25,961 INFO L225 Difference]: With dead ends: 174573 [2018-10-26 18:30:25,961 INFO L226 Difference]: Without dead ends: 87697 [2018-10-26 18:30:26,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2018-10-26 18:30:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 87697. [2018-10-26 18:30:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87697 states. [2018-10-26 18:30:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87697 states to 87697 states and 99576 transitions. [2018-10-26 18:30:27,443 INFO L78 Accepts]: Start accepts. Automaton has 87697 states and 99576 transitions. Word has length 870 [2018-10-26 18:30:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:30:27,444 INFO L481 AbstractCegarLoop]: Abstraction has 87697 states and 99576 transitions. [2018-10-26 18:30:27,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:30:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 87697 states and 99576 transitions. [2018-10-26 18:30:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2018-10-26 18:30:27,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:30:27,495 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:30:27,495 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:30:27,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:30:27,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2042347866, now seen corresponding path program 1 times [2018-10-26 18:30:27,496 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:30:27,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:30:27,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:27,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:27,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 18:30:29,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:30:29,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:30:29,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:30:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:30:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:29,635 INFO L87 Difference]: Start difference. First operand 87697 states and 99576 transitions. Second operand 4 states. [2018-10-26 18:30:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:30:37,950 INFO L93 Difference]: Finished difference Result 204876 states and 234849 transitions. [2018-10-26 18:30:37,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:30:37,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 901 [2018-10-26 18:30:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:30:38,127 INFO L225 Difference]: With dead ends: 204876 [2018-10-26 18:30:38,128 INFO L226 Difference]: Without dead ends: 118000 [2018-10-26 18:30:38,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118000 states. [2018-10-26 18:30:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118000 to 118000. [2018-10-26 18:30:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118000 states. [2018-10-26 18:30:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118000 states to 118000 states and 134050 transitions. [2018-10-26 18:30:39,342 INFO L78 Accepts]: Start accepts. Automaton has 118000 states and 134050 transitions. Word has length 901 [2018-10-26 18:30:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:30:39,344 INFO L481 AbstractCegarLoop]: Abstraction has 118000 states and 134050 transitions. [2018-10-26 18:30:39,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:30:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 118000 states and 134050 transitions. [2018-10-26 18:30:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2018-10-26 18:30:39,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:30:39,417 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:30:39,417 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:30:39,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:30:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1941613247, now seen corresponding path program 1 times [2018-10-26 18:30:39,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:30:39,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:30:39,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:39,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:39,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-26 18:30:41,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:30:41,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 18:30:41,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 18:30:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 18:30:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 18:30:41,093 INFO L87 Difference]: Start difference. First operand 118000 states and 134050 transitions. Second operand 3 states. [2018-10-26 18:30:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:30:46,916 INFO L93 Difference]: Finished difference Result 285138 states and 322830 transitions. [2018-10-26 18:30:46,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 18:30:46,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1054 [2018-10-26 18:30:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:30:47,093 INFO L225 Difference]: With dead ends: 285138 [2018-10-26 18:30:47,094 INFO L226 Difference]: Without dead ends: 166319 [2018-10-26 18:30:47,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 18:30:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166319 states. [2018-10-26 18:30:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166319 to 164681. [2018-10-26 18:30:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164681 states. [2018-10-26 18:30:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164681 states to 164681 states and 178459 transitions. [2018-10-26 18:30:49,541 INFO L78 Accepts]: Start accepts. Automaton has 164681 states and 178459 transitions. Word has length 1054 [2018-10-26 18:30:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:30:49,542 INFO L481 AbstractCegarLoop]: Abstraction has 164681 states and 178459 transitions. [2018-10-26 18:30:49,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 18:30:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 164681 states and 178459 transitions. [2018-10-26 18:30:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2018-10-26 18:30:49,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:30:49,592 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:30:49,592 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:30:49,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:30:49,593 INFO L82 PathProgramCache]: Analyzing trace with hash 689733981, now seen corresponding path program 1 times [2018-10-26 18:30:49,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:30:49,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:30:49,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:49,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:30:49,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:30:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:30:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-26 18:30:51,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:30:51,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:30:51,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:30:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:30:51,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:51,531 INFO L87 Difference]: Start difference. First operand 164681 states and 178459 transitions. Second operand 4 states. [2018-10-26 18:30:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:30:58,322 INFO L93 Difference]: Finished difference Result 328541 states and 356091 transitions. [2018-10-26 18:30:58,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:30:58,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1132 [2018-10-26 18:30:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:30:58,476 INFO L225 Difference]: With dead ends: 328541 [2018-10-26 18:30:58,476 INFO L226 Difference]: Without dead ends: 145001 [2018-10-26 18:30:58,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:30:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145001 states. [2018-10-26 18:31:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145001 to 145001. [2018-10-26 18:31:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145001 states. [2018-10-26 18:31:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145001 states to 145001 states and 152790 transitions. [2018-10-26 18:31:00,851 INFO L78 Accepts]: Start accepts. Automaton has 145001 states and 152790 transitions. Word has length 1132 [2018-10-26 18:31:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:31:00,852 INFO L481 AbstractCegarLoop]: Abstraction has 145001 states and 152790 transitions. [2018-10-26 18:31:00,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:31:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 145001 states and 152790 transitions. [2018-10-26 18:31:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1597 [2018-10-26 18:31:00,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:31:00,935 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:31:00,935 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:31:00,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:31:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash -421808478, now seen corresponding path program 1 times [2018-10-26 18:31:00,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:31:00,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:31:00,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:00,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:31:00,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:31:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-26 18:31:07,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:31:07,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 18:31:07,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 18:31:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 18:31:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 18:31:07,207 INFO L87 Difference]: Start difference. First operand 145001 states and 152790 transitions. Second operand 6 states. [2018-10-26 18:31:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:31:18,003 INFO L93 Difference]: Finished difference Result 289181 states and 304753 transitions. [2018-10-26 18:31:18,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 18:31:18,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1596 [2018-10-26 18:31:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:31:18,174 INFO L225 Difference]: With dead ends: 289181 [2018-10-26 18:31:18,175 INFO L226 Difference]: Without dead ends: 135161 [2018-10-26 18:31:18,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 18:31:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135161 states. [2018-10-26 18:31:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135161 to 135161. [2018-10-26 18:31:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135161 states. [2018-10-26 18:31:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135161 states to 135161 states and 137571 transitions. [2018-10-26 18:31:20,202 INFO L78 Accepts]: Start accepts. Automaton has 135161 states and 137571 transitions. Word has length 1596 [2018-10-26 18:31:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:31:20,203 INFO L481 AbstractCegarLoop]: Abstraction has 135161 states and 137571 transitions. [2018-10-26 18:31:20,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 18:31:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 135161 states and 137571 transitions. [2018-10-26 18:31:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1821 [2018-10-26 18:31:20,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:31:20,299 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:31:20,300 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:31:20,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:31:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1345155240, now seen corresponding path program 1 times [2018-10-26 18:31:20,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:31:20,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:31:20,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:20,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:31:20,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:31:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 2051 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2018-10-26 18:31:25,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:31:25,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:31:25,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:31:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:31:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:31:25,500 INFO L87 Difference]: Start difference. First operand 135161 states and 137571 transitions. Second operand 4 states. [2018-10-26 18:31:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:31:29,266 INFO L93 Difference]: Finished difference Result 269500 states and 274316 transitions. [2018-10-26 18:31:29,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 18:31:29,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1820 [2018-10-26 18:31:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:31:29,411 INFO L225 Difference]: With dead ends: 269500 [2018-10-26 18:31:29,411 INFO L226 Difference]: Without dead ends: 135160 [2018-10-26 18:31:29,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:31:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135160 states. [2018-10-26 18:31:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135160 to 133522. [2018-10-26 18:31:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133522 states. [2018-10-26 18:31:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133522 states to 133522 states and 135484 transitions. [2018-10-26 18:31:30,902 INFO L78 Accepts]: Start accepts. Automaton has 133522 states and 135484 transitions. Word has length 1820 [2018-10-26 18:31:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:31:30,903 INFO L481 AbstractCegarLoop]: Abstraction has 133522 states and 135484 transitions. [2018-10-26 18:31:30,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:31:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 133522 states and 135484 transitions. [2018-10-26 18:31:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2018-10-26 18:31:30,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:31:30,981 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:31:30,981 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:31:30,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:31:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1465817371, now seen corresponding path program 1 times [2018-10-26 18:31:30,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:31:30,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:31:30,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:30,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:31:30,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:31:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1906 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2018-10-26 18:31:33,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:31:33,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:31:33,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:31:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:31:33,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:31:33,555 INFO L87 Difference]: Start difference. First operand 133522 states and 135484 transitions. Second operand 4 states. [2018-10-26 18:31:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:31:38,670 INFO L93 Difference]: Finished difference Result 274418 states and 278447 transitions. [2018-10-26 18:31:38,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:31:38,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1823 [2018-10-26 18:31:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:31:38,808 INFO L225 Difference]: With dead ends: 274418 [2018-10-26 18:31:38,808 INFO L226 Difference]: Without dead ends: 137617 [2018-10-26 18:31:39,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:31:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137617 states. [2018-10-26 18:31:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137617 to 136797. [2018-10-26 18:31:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136797 states. [2018-10-26 18:31:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136797 states to 136797 states and 138652 transitions. [2018-10-26 18:31:40,483 INFO L78 Accepts]: Start accepts. Automaton has 136797 states and 138652 transitions. Word has length 1823 [2018-10-26 18:31:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:31:40,484 INFO L481 AbstractCegarLoop]: Abstraction has 136797 states and 138652 transitions. [2018-10-26 18:31:40,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:31:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 136797 states and 138652 transitions. [2018-10-26 18:31:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2089 [2018-10-26 18:31:40,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:31:40,592 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:31:40,593 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:31:40,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:31:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash 922853593, now seen corresponding path program 1 times [2018-10-26 18:31:40,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:31:40,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:31:40,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:40,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:31:40,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:31:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:31:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 1632 proven. 263 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2018-10-26 18:31:45,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 18:31:45,748 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 18:31:45,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:31:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:31:46,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 18:31:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 1804 proven. 0 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2018-10-26 18:31:49,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 18:31:49,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-26 18:31:49,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 18:31:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 18:31:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-26 18:31:49,514 INFO L87 Difference]: Start difference. First operand 136797 states and 138652 transitions. Second operand 8 states. [2018-10-26 18:32:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:32:05,254 INFO L93 Difference]: Finished difference Result 268883 states and 272567 transitions. [2018-10-26 18:32:05,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 18:32:05,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 2088 [2018-10-26 18:32:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:32:05,537 INFO L225 Difference]: With dead ends: 268883 [2018-10-26 18:32:05,538 INFO L226 Difference]: Without dead ends: 132907 [2018-10-26 18:32:05,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2101 GetRequests, 2091 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-26 18:32:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132907 states. [2018-10-26 18:32:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132907 to 129422. [2018-10-26 18:32:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129422 states. [2018-10-26 18:32:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129422 states to 129422 states and 130675 transitions. [2018-10-26 18:32:08,434 INFO L78 Accepts]: Start accepts. Automaton has 129422 states and 130675 transitions. Word has length 2088 [2018-10-26 18:32:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:32:08,435 INFO L481 AbstractCegarLoop]: Abstraction has 129422 states and 130675 transitions. [2018-10-26 18:32:08,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 18:32:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 129422 states and 130675 transitions. [2018-10-26 18:32:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4109 [2018-10-26 18:32:08,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:32:08,819 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:32:08,819 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:32:08,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:32:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash 58647241, now seen corresponding path program 1 times [2018-10-26 18:32:08,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:32:08,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:32:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:32:08,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:32:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:32:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:32:10,793 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-26 18:32:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14546 backedges. 3020 proven. 0 refuted. 0 times theorem prover too weak. 11526 trivial. 0 not checked. [2018-10-26 18:32:18,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:32:18,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:32:18,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:32:18,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:32:18,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:32:18,241 INFO L87 Difference]: Start difference. First operand 129422 states and 130675 transitions. Second operand 4 states. [2018-10-26 18:32:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 18:32:23,296 INFO L93 Difference]: Finished difference Result 247372 states and 249817 transitions. [2018-10-26 18:32:23,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:32:23,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4108 [2018-10-26 18:32:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 18:32:23,457 INFO L225 Difference]: With dead ends: 247372 [2018-10-26 18:32:23,458 INFO L226 Difference]: Without dead ends: 130239 [2018-10-26 18:32:23,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:32:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130239 states. [2018-10-26 18:32:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130239 to 127782. [2018-10-26 18:32:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127782 states. [2018-10-26 18:32:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127782 states to 127782 states and 128840 transitions. [2018-10-26 18:32:24,930 INFO L78 Accepts]: Start accepts. Automaton has 127782 states and 128840 transitions. Word has length 4108 [2018-10-26 18:32:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 18:32:24,931 INFO L481 AbstractCegarLoop]: Abstraction has 127782 states and 128840 transitions. [2018-10-26 18:32:24,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 18:32:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 127782 states and 128840 transitions. [2018-10-26 18:32:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4176 [2018-10-26 18:32:25,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 18:32:25,116 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 18:32:25,116 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 18:32:25,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 18:32:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1082793412, now seen corresponding path program 1 times [2018-10-26 18:32:25,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 18:32:25,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 18:32:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:32:25,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 18:32:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 18:32:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 18:32:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15174 backedges. 5847 proven. 0 refuted. 0 times theorem prover too weak. 9327 trivial. 0 not checked. [2018-10-26 18:32:34,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 18:32:34,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 18:32:34,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 18:32:34,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 18:32:34,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 18:32:34,161 INFO L87 Difference]: Start difference. First operand 127782 states and 128840 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 18:32:38,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 18:32:38,970 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 18:32:38,975 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 18:32:38,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 06:32:38 BoogieIcfgContainer [2018-10-26 18:32:38,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 18:32:38,977 INFO L168 Benchmark]: Toolchain (without parser) took 214904.74 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -413.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,978 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 18:32:38,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2325.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,980 INFO L168 Benchmark]: Boogie Preprocessor took 241.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,981 INFO L168 Benchmark]: RCFGBuilder took 8880.14 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -110.0 MB). Peak memory consumption was 652.0 MB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,982 INFO L168 Benchmark]: TraceAbstraction took 202915.84 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 494.3 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-26 18:32:38,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2325.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 241.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8880.14 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -110.0 MB). Peak memory consumption was 652.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202915.84 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 494.3 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4643]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4643). Cancelled while BasicCegarLoop was constructing difference of abstraction (127782states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (239835 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 202.8s OverallTime, 15 OverallIterations, 15 TraceHistogramMax, 126.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10394 SDtfs, 33188 SDslu, 1096 SDs, 0 SdLazy, 71127 SolverSat, 17292 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2950 GetRequests, 2901 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164681occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 10038 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 26330 NumberOfCodeBlocks, 26330 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 26313 ConstructedInterpolants, 0 QuantifiedInterpolants, 99522197 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3346 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 43003/43270 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown