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_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 17:19:41,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 17:19:41,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 17:19:41,863 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 17:19:41,863 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 17:19:41,864 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 17:19:41,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 17:19:41,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 17:19:41,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 17:19:41,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 17:19:41,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 17:19:41,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 17:19:41,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 17:19:41,873 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 17:19:41,874 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 17:19:41,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 17:19:41,878 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 17:19:41,882 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 17:19:41,884 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 17:19:41,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 17:19:41,891 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 17:19:41,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 17:19:41,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 17:19:41,898 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 17:19:41,898 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 17:19:41,899 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 17:19:41,900 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 17:19:41,901 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 17:19:41,905 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 17:19:41,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 17:19:41,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 17:19:41,910 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 17:19:41,910 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 17:19:41,910 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 17:19:41,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 17:19:41,914 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 17:19:41,914 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 [2018-10-23 17:19:41,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 17:19:41,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 17:19:41,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 17:19:41,944 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 17:19:41,945 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 17:19:41,945 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 17:19:41,945 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 17:19:41,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 17:19:41,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 17:19:41,946 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 17:19:41,946 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 17:19:41,946 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 17:19:41,946 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 17:19:41,947 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 17:19:41,947 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 17:19:41,947 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 17:19:41,947 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 17:19:41,947 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 17:19:41,948 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 17:19:41,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 17:19:41,948 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 17:19:41,948 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 17:19:41,948 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 17:19:41,949 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 17:19:41,949 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 17:19:41,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 17:19:41,949 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 17:19:41,949 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 17:19:41,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 17:19:42,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 17:19:42,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 17:19:42,019 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 17:19:42,020 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 17:19:42,020 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label39_false-unreach-call.c [2018-10-23 17:19:42,088 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c17f29524/dfd142fda5f847e5b613b5e9af865068/FLAG798d5af68 [2018-10-23 17:19:43,000 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 17:19:43,001 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label39_false-unreach-call.c [2018-10-23 17:19:43,036 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c17f29524/dfd142fda5f847e5b613b5e9af865068/FLAG798d5af68 [2018-10-23 17:19:43,053 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c17f29524/dfd142fda5f847e5b613b5e9af865068 [2018-10-23 17:19:43,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 17:19:43,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 17:19:43,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 17:19:43,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 17:19:43,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 17:19:43,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:19:43" (1/1) ... [2018-10-23 17:19:43,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a1a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:43, skipping insertion in model container [2018-10-23 17:19:43,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:19:43" (1/1) ... [2018-10-23 17:19:43,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 17:19:43,251 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 17:19:44,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:19:44,624 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 17:19:45,237 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:19:45,273 INFO L193 MainTranslator]: Completed translation [2018-10-23 17:19:45,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45 WrapperNode [2018-10-23 17:19:45,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 17:19:45,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 17:19:45,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 17:19:45,276 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 17:19:45,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:45,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:45,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 17:19:45,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 17:19:45,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 17:19:45,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 17:19:45,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:45,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:45,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:45,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:46,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:46,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:46,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (1/1) ... [2018-10-23 17:19:46,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 17:19:46,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 17:19:46,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 17:19:46,141 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 17:19:46,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (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 [2018-10-23 17:19:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 17:19:46,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 17:19:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 17:19:55,844 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 17:19:55,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:19:55 BoogieIcfgContainer [2018-10-23 17:19:55,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 17:19:55,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 17:19:55,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 17:19:55,851 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 17:19:55,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:19:43" (1/3) ... [2018-10-23 17:19:55,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa0c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:19:55, skipping insertion in model container [2018-10-23 17:19:55,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:19:45" (2/3) ... [2018-10-23 17:19:55,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa0c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:19:55, skipping insertion in model container [2018-10-23 17:19:55,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:19:55" (3/3) ... [2018-10-23 17:19:55,861 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label39_false-unreach-call.c [2018-10-23 17:19:55,871 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 17:19:55,881 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 17:19:55,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 17:19:55,955 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 17:19:55,956 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 17:19:55,956 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 17:19:55,956 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 17:19:55,956 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 17:19:55,956 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 17:19:55,956 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 17:19:55,957 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 17:19:55,957 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 17:19:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-23 17:19:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-10-23 17:19:56,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:19:56,055 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] [2018-10-23 17:19:56,058 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:19:56,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:19:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1065164717, now seen corresponding path program 1 times [2018-10-23 17:19:56,068 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:19:56,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:19:56,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:19:56,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:19:56,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:19:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:19:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:19:58,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:19:58,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 17:19:58,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:19:58,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:19:58,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:19:58,150 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 3 states. [2018-10-23 17:20:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:04,430 INFO L93 Difference]: Finished difference Result 2592 states and 5031 transitions. [2018-10-23 17:20:04,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:20:04,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 760 [2018-10-23 17:20:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:04,475 INFO L225 Difference]: With dead ends: 2592 [2018-10-23 17:20:04,475 INFO L226 Difference]: Without dead ends: 1702 [2018-10-23 17:20:04,484 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 [2018-10-23 17:20:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2018-10-23 17:20:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2018-10-23 17:20:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2018-10-23 17:20:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 3071 transitions. [2018-10-23 17:20:04,633 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 3071 transitions. Word has length 760 [2018-10-23 17:20:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:04,635 INFO L481 AbstractCegarLoop]: Abstraction has 1702 states and 3071 transitions. [2018-10-23 17:20:04,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:20:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 3071 transitions. [2018-10-23 17:20:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2018-10-23 17:20:04,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:04,659 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:04,660 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:04,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:04,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1646626184, now seen corresponding path program 1 times [2018-10-23 17:20:04,661 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:04,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:04,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:04,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:04,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:20:05,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:20:05,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 17:20:05,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:20:05,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:20:05,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:20:05,141 INFO L87 Difference]: Start difference. First operand 1702 states and 3071 transitions. Second operand 3 states. [2018-10-23 17:20:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:11,772 INFO L93 Difference]: Finished difference Result 5040 states and 9148 transitions. [2018-10-23 17:20:11,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:20:11,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 766 [2018-10-23 17:20:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:11,794 INFO L225 Difference]: With dead ends: 5040 [2018-10-23 17:20:11,794 INFO L226 Difference]: Without dead ends: 3340 [2018-10-23 17:20:11,799 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 [2018-10-23 17:20:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2018-10-23 17:20:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3340. [2018-10-23 17:20:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2018-10-23 17:20:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 5323 transitions. [2018-10-23 17:20:11,872 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 5323 transitions. Word has length 766 [2018-10-23 17:20:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:11,872 INFO L481 AbstractCegarLoop]: Abstraction has 3340 states and 5323 transitions. [2018-10-23 17:20:11,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:20:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 5323 transitions. [2018-10-23 17:20:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-10-23 17:20:11,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:11,886 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:11,886 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:11,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:11,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1634542278, now seen corresponding path program 1 times [2018-10-23 17:20:11,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:11,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:11,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:11,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:20:13,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:20:13,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:20:13,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:20:13,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:20:13,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:20:13,334 INFO L87 Difference]: Start difference. First operand 3340 states and 5323 transitions. Second operand 4 states. [2018-10-23 17:20:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:22,796 INFO L93 Difference]: Finished difference Result 13230 states and 21164 transitions. [2018-10-23 17:20:22,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:20:22,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 783 [2018-10-23 17:20:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:22,853 INFO L225 Difference]: With dead ends: 13230 [2018-10-23 17:20:22,853 INFO L226 Difference]: Without dead ends: 9892 [2018-10-23 17:20:22,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:20:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2018-10-23 17:20:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 9892. [2018-10-23 17:20:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9892 states. [2018-10-23 17:20:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 14943 transitions. [2018-10-23 17:20:23,228 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 14943 transitions. Word has length 783 [2018-10-23 17:20:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:23,231 INFO L481 AbstractCegarLoop]: Abstraction has 9892 states and 14943 transitions. [2018-10-23 17:20:23,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:20:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 14943 transitions. [2018-10-23 17:20:23,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2018-10-23 17:20:23,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:23,260 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:23,260 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:23,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1609657750, now seen corresponding path program 1 times [2018-10-23 17:20:23,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:23,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:23,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:23,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:23,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 17:20:23,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:20:23,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:20:23,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:20:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:20:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:20:23,964 INFO L87 Difference]: Start difference. First operand 9892 states and 14943 transitions. Second operand 4 states. [2018-10-23 17:20:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:31,720 INFO L93 Difference]: Finished difference Result 39438 states and 59644 transitions. [2018-10-23 17:20:31,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:20:31,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 827 [2018-10-23 17:20:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:31,808 INFO L225 Difference]: With dead ends: 39438 [2018-10-23 17:20:31,809 INFO L226 Difference]: Without dead ends: 29548 [2018-10-23 17:20:31,823 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 [2018-10-23 17:20:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29548 states. [2018-10-23 17:20:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29548 to 29548. [2018-10-23 17:20:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29548 states. [2018-10-23 17:20:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29548 states to 29548 states and 39657 transitions. [2018-10-23 17:20:32,300 INFO L78 Accepts]: Start accepts. Automaton has 29548 states and 39657 transitions. Word has length 827 [2018-10-23 17:20:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:32,301 INFO L481 AbstractCegarLoop]: Abstraction has 29548 states and 39657 transitions. [2018-10-23 17:20:32,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:20:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 29548 states and 39657 transitions. [2018-10-23 17:20:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2018-10-23 17:20:32,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:32,362 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:32,363 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:32,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash 70192392, now seen corresponding path program 1 times [2018-10-23 17:20:32,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:32,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:32,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:32,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 17:20:33,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:20:33,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:20:33,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:20:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:20:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:20:33,152 INFO L87 Difference]: Start difference. First operand 29548 states and 39657 transitions. Second operand 4 states. [2018-10-23 17:20:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:40,944 INFO L93 Difference]: Finished difference Result 114786 states and 154234 transitions. [2018-10-23 17:20:40,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:20:40,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 860 [2018-10-23 17:20:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:41,145 INFO L225 Difference]: With dead ends: 114786 [2018-10-23 17:20:41,145 INFO L226 Difference]: Without dead ends: 85240 [2018-10-23 17:20:41,206 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 [2018-10-23 17:20:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85240 states. [2018-10-23 17:20:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85240 to 81964. [2018-10-23 17:20:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81964 states. [2018-10-23 17:20:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81964 states to 81964 states and 103340 transitions. [2018-10-23 17:20:42,610 INFO L78 Accepts]: Start accepts. Automaton has 81964 states and 103340 transitions. Word has length 860 [2018-10-23 17:20:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:42,611 INFO L481 AbstractCegarLoop]: Abstraction has 81964 states and 103340 transitions. [2018-10-23 17:20:42,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:20:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 81964 states and 103340 transitions. [2018-10-23 17:20:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-10-23 17:20:42,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:42,752 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:42,753 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:42,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -176469526, now seen corresponding path program 1 times [2018-10-23 17:20:42,754 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:42,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:42,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:42,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:42,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-23 17:20:44,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:20:44,262 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 [2018-10-23 17:20:44,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:20:44,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:20:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-23 17:20:45,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:20:45,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 17:20:45,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 17:20:45,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 17:20:45,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 17:20:45,213 INFO L87 Difference]: Start difference. First operand 81964 states and 103340 transitions. Second operand 5 states. [2018-10-23 17:20:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:20:57,070 INFO L93 Difference]: Finished difference Result 248283 states and 308041 transitions. [2018-10-23 17:20:57,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:20:57,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2018-10-23 17:20:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:20:57,255 INFO L225 Difference]: With dead ends: 248283 [2018-10-23 17:20:57,255 INFO L226 Difference]: Without dead ends: 166321 [2018-10-23 17:20:57,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 875 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 17:20:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166321 states. [2018-10-23 17:20:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166321 to 165502. [2018-10-23 17:20:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165502 states. [2018-10-23 17:20:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165502 states to 165502 states and 190748 transitions. [2018-10-23 17:20:59,691 INFO L78 Accepts]: Start accepts. Automaton has 165502 states and 190748 transitions. Word has length 876 [2018-10-23 17:20:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:20:59,692 INFO L481 AbstractCegarLoop]: Abstraction has 165502 states and 190748 transitions. [2018-10-23 17:20:59,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 17:20:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 165502 states and 190748 transitions. [2018-10-23 17:20:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2018-10-23 17:20:59,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:20:59,763 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:20:59,764 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:20:59,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:20:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1883244976, now seen corresponding path program 1 times [2018-10-23 17:20:59,765 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:20:59,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:20:59,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:59,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:20:59,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:20:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:21:00,349 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 17:21:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-10-23 17:21:01,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:21:01,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:21:01,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:21:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:21:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:21:01,794 INFO L87 Difference]: Start difference. First operand 165502 states and 190748 transitions. Second operand 4 states. [2018-10-23 17:21:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:21:10,724 INFO L93 Difference]: Finished difference Result 331002 states and 381524 transitions. [2018-10-23 17:21:10,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:21:10,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1101 [2018-10-23 17:21:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:21:10,961 INFO L225 Difference]: With dead ends: 331002 [2018-10-23 17:21:10,961 INFO L226 Difference]: Without dead ends: 166321 [2018-10-23 17:21:11,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:21:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166321 states. [2018-10-23 17:21:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166321 to 166321. [2018-10-23 17:21:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166321 states. [2018-10-23 17:21:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166321 states to 166321 states and 187326 transitions. [2018-10-23 17:21:13,371 INFO L78 Accepts]: Start accepts. Automaton has 166321 states and 187326 transitions. Word has length 1101 [2018-10-23 17:21:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:21:13,371 INFO L481 AbstractCegarLoop]: Abstraction has 166321 states and 187326 transitions. [2018-10-23 17:21:13,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:21:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 166321 states and 187326 transitions. [2018-10-23 17:21:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2018-10-23 17:21:13,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:21:13,436 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:21:13,436 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:21:13,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:21:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash -900789323, now seen corresponding path program 1 times [2018-10-23 17:21:13,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:21:13,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:21:13,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:21:13,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:21:13,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:21:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:21:14,383 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 17:21:14,642 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 17:21:14,965 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-23 17:21:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:21:17,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:21:17,687 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 [2018-10-23 17:21:17,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:21:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:21:18,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:21:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 17:21:19,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:21:19,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 17:21:19,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 17:21:19,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 17:21:19,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-23 17:21:19,462 INFO L87 Difference]: Start difference. First operand 166321 states and 187326 transitions. Second operand 8 states. [2018-10-23 17:21:41,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:21:41,429 INFO L93 Difference]: Finished difference Result 356417 states and 401601 transitions. [2018-10-23 17:21:41,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 17:21:41,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1103 [2018-10-23 17:21:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:21:41,625 INFO L225 Difference]: With dead ends: 356417 [2018-10-23 17:21:41,625 INFO L226 Difference]: Without dead ends: 190917 [2018-10-23 17:21:41,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1123 GetRequests, 1108 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-23 17:21:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190917 states. [2018-10-23 17:21:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190917 to 166321. [2018-10-23 17:21:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166321 states. [2018-10-23 17:21:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166321 states to 166321 states and 182217 transitions. [2018-10-23 17:21:44,770 INFO L78 Accepts]: Start accepts. Automaton has 166321 states and 182217 transitions. Word has length 1103 [2018-10-23 17:21:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:21:44,771 INFO L481 AbstractCegarLoop]: Abstraction has 166321 states and 182217 transitions. [2018-10-23 17:21:44,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 17:21:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 166321 states and 182217 transitions. [2018-10-23 17:21:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2018-10-23 17:21:44,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:21:44,835 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:21:44,835 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:21:44,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:21:44,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1177694661, now seen corresponding path program 1 times [2018-10-23 17:21:44,836 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:21:44,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:21:44,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:21:44,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:21:44,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:21:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:21:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 740 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-23 17:21:47,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:21:47,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:21:47,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:21:47,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:21:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:21:47,687 INFO L87 Difference]: Start difference. First operand 166321 states and 182217 transitions. Second operand 4 states. [2018-10-23 17:21:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:21:56,010 INFO L93 Difference]: Finished difference Result 330181 states and 361727 transitions. [2018-10-23 17:21:56,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:21:56,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1266 [2018-10-23 17:21:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:21:56,208 INFO L225 Difference]: With dead ends: 330181 [2018-10-23 17:21:56,208 INFO L226 Difference]: Without dead ends: 164681 [2018-10-23 17:21:56,302 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 [2018-10-23 17:21:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164681 states. [2018-10-23 17:22:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164681 to 158948. [2018-10-23 17:22:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158948 states. [2018-10-23 17:22:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158948 states to 158948 states and 169583 transitions. [2018-10-23 17:22:02,652 INFO L78 Accepts]: Start accepts. Automaton has 158948 states and 169583 transitions. Word has length 1266 [2018-10-23 17:22:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:22:02,653 INFO L481 AbstractCegarLoop]: Abstraction has 158948 states and 169583 transitions. [2018-10-23 17:22:02,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:22:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 158948 states and 169583 transitions. [2018-10-23 17:22:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1431 [2018-10-23 17:22:02,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:22:02,711 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:22:02,712 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:22:02,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:22:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash 795472374, now seen corresponding path program 1 times [2018-10-23 17:22:02,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:22:02,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:22:02,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:02,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:22:02,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:22:04,546 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-23 17:22:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-23 17:22:07,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:22:07,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 17:22:07,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 17:22:07,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 17:22:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:22:07,175 INFO L87 Difference]: Start difference. First operand 158948 states and 169583 transitions. Second operand 6 states. [2018-10-23 17:22:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:22:17,114 INFO L93 Difference]: Finished difference Result 320351 states and 341711 transitions. [2018-10-23 17:22:17,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 17:22:17,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1430 [2018-10-23 17:22:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:22:17,302 INFO L225 Difference]: With dead ends: 320351 [2018-10-23 17:22:17,302 INFO L226 Difference]: Without dead ends: 161404 [2018-10-23 17:22:17,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:22:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161404 states. [2018-10-23 17:22:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161404 to 160585. [2018-10-23 17:22:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160585 states. [2018-10-23 17:22:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160585 states to 160585 states and 170793 transitions. [2018-10-23 17:22:19,068 INFO L78 Accepts]: Start accepts. Automaton has 160585 states and 170793 transitions. Word has length 1430 [2018-10-23 17:22:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:22:19,068 INFO L481 AbstractCegarLoop]: Abstraction has 160585 states and 170793 transitions. [2018-10-23 17:22:19,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 17:22:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 160585 states and 170793 transitions. [2018-10-23 17:22:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1568 [2018-10-23 17:22:19,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:22:19,143 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 17:22:19,143 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:22:19,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:22:19,144 INFO L82 PathProgramCache]: Analyzing trace with hash 159872810, now seen corresponding path program 1 times [2018-10-23 17:22:19,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:22:19,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:22:19,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:19,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:22:19,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:22:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1230 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-10-23 17:22:22,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:22:22,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:22:22,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:22:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:22:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:22:22,014 INFO L87 Difference]: Start difference. First operand 160585 states and 170793 transitions. Second operand 4 states. [2018-10-23 17:22:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:22:28,685 INFO L93 Difference]: Finished difference Result 320349 states and 340759 transitions. [2018-10-23 17:22:28,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:22:28,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1567 [2018-10-23 17:22:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:22:28,856 INFO L225 Difference]: With dead ends: 320349 [2018-10-23 17:22:28,856 INFO L226 Difference]: Without dead ends: 158125 [2018-10-23 17:22:28,946 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 [2018-10-23 17:22:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158125 states. [2018-10-23 17:22:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158125 to 157306. [2018-10-23 17:22:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157306 states. [2018-10-23 17:22:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157306 states to 157306 states and 163986 transitions. [2018-10-23 17:22:30,639 INFO L78 Accepts]: Start accepts. Automaton has 157306 states and 163986 transitions. Word has length 1567 [2018-10-23 17:22:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:22:30,639 INFO L481 AbstractCegarLoop]: Abstraction has 157306 states and 163986 transitions. [2018-10-23 17:22:30,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:22:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 157306 states and 163986 transitions. [2018-10-23 17:22:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1764 [2018-10-23 17:22:30,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:22:30,710 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:22:30,710 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:22:30,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:22:30,711 INFO L82 PathProgramCache]: Analyzing trace with hash 721547726, now seen corresponding path program 1 times [2018-10-23 17:22:30,711 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:22:30,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:22:30,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:30,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:22:30,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:22:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 1481 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-10-23 17:22:33,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:22:33,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:22:33,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:22:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:22:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:22:33,679 INFO L87 Difference]: Start difference. First operand 157306 states and 163986 transitions. Second operand 4 states. [2018-10-23 17:22:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:22:40,899 INFO L93 Difference]: Finished difference Result 312967 states and 326287 transitions. [2018-10-23 17:22:40,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:22:40,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1763 [2018-10-23 17:22:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:22:41,078 INFO L225 Difference]: With dead ends: 312967 [2018-10-23 17:22:41,078 INFO L226 Difference]: Without dead ends: 156482 [2018-10-23 17:22:41,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:22:41,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156482 states. [2018-10-23 17:22:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156482 to 153206. [2018-10-23 17:22:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153206 states. [2018-10-23 17:22:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153206 states to 153206 states and 159077 transitions. [2018-10-23 17:22:43,249 INFO L78 Accepts]: Start accepts. Automaton has 153206 states and 159077 transitions. Word has length 1763 [2018-10-23 17:22:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:22:43,250 INFO L481 AbstractCegarLoop]: Abstraction has 153206 states and 159077 transitions. [2018-10-23 17:22:43,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:22:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 153206 states and 159077 transitions. [2018-10-23 17:22:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2086 [2018-10-23 17:22:43,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:22:43,375 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:22:43,376 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:22:43,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:22:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1030873357, now seen corresponding path program 1 times [2018-10-23 17:22:43,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:22:43,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:22:43,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:43,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:22:43,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:22:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3063 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2018-10-23 17:22:46,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:22:46,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:22:46,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:22:46,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:22:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:22:46,179 INFO L87 Difference]: Start difference. First operand 153206 states and 159077 transitions. Second operand 4 states. [2018-10-23 17:22:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:22:52,481 INFO L93 Difference]: Finished difference Result 305591 states and 317327 transitions. [2018-10-23 17:22:52,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:22:52,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2085 [2018-10-23 17:22:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:22:52,626 INFO L225 Difference]: With dead ends: 305591 [2018-10-23 17:22:52,627 INFO L226 Difference]: Without dead ends: 133526 [2018-10-23 17:22:52,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:22:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133526 states. [2018-10-23 17:22:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133526 to 133526. [2018-10-23 17:22:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133526 states. [2018-10-23 17:22:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133526 states to 133526 states and 134808 transitions. [2018-10-23 17:22:53,982 INFO L78 Accepts]: Start accepts. Automaton has 133526 states and 134808 transitions. Word has length 2085 [2018-10-23 17:22:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:22:53,983 INFO L481 AbstractCegarLoop]: Abstraction has 133526 states and 134808 transitions. [2018-10-23 17:22:53,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:22:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 133526 states and 134808 transitions. [2018-10-23 17:22:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2571 [2018-10-23 17:22:54,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:22:54,084 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:22:54,084 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:22:54,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:22:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 7303193, now seen corresponding path program 1 times [2018-10-23 17:22:54,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:22:54,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:22:54,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:54,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:22:54,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:22:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:23:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3684 backedges. 2171 proven. 5 refuted. 0 times theorem prover too weak. 1508 trivial. 0 not checked. [2018-10-23 17:23:00,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:23:00,276 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 17:23:00,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:23:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:23:00,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:23:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3684 backedges. 2171 proven. 0 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2018-10-23 17:23:03,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:23:03,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-23 17:23:03,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:23:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:23:03,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:23:03,838 INFO L87 Difference]: Start difference. First operand 133526 states and 134808 transitions. Second operand 4 states. [2018-10-23 17:23:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:23:07,341 INFO L93 Difference]: Finished difference Result 261311 states and 263850 transitions. [2018-10-23 17:23:07,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:23:07,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2570 [2018-10-23 17:23:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:23:07,469 INFO L225 Difference]: With dead ends: 261311 [2018-10-23 17:23:07,469 INFO L226 Difference]: Without dead ends: 128606 [2018-10-23 17:23:07,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2573 GetRequests, 2571 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:23:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128606 states. [2018-10-23 17:23:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128606 to 123692. [2018-10-23 17:23:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123692 states. [2018-10-23 17:23:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123692 states to 123692 states and 124564 transitions. [2018-10-23 17:23:09,270 INFO L78 Accepts]: Start accepts. Automaton has 123692 states and 124564 transitions. Word has length 2570 [2018-10-23 17:23:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:23:09,271 INFO L481 AbstractCegarLoop]: Abstraction has 123692 states and 124564 transitions. [2018-10-23 17:23:09,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:23:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 123692 states and 124564 transitions. [2018-10-23 17:23:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5120 [2018-10-23 17:23:09,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:23:09,483 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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, 13, 13, 13, 13, 13, 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, 11, 11, 11, 11, 11, 11, 11, 11, 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, 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, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:23:09,484 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:23:09,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:23:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -98654119, now seen corresponding path program 1 times [2018-10-23 17:23:09,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:23:09,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:23:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:23:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:23:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:23:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown