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/Problem06_label11_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 13:32:31,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 13:32:31,258 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 13:32:31,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 13:32:31,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 13:32:31,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 13:32:31,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 13:32:31,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 13:32:31,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 13:32:31,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 13:32:31,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 13:32:31,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 13:32:31,279 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 13:32:31,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 13:32:31,282 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 13:32:31,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 13:32:31,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 13:32:31,285 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 13:32:31,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 13:32:31,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 13:32:31,290 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 13:32:31,291 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 13:32:31,294 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 13:32:31,294 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 13:32:31,294 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 13:32:31,295 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 13:32:31,296 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 13:32:31,297 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 13:32:31,298 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 13:32:31,299 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 13:32:31,299 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 13:32:31,300 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 13:32:31,300 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 13:32:31,301 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 13:32:31,302 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 13:32:31,302 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 13:32:31,303 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 [2018-10-24 13:32:31,330 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 13:32:31,331 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 13:32:31,331 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 13:32:31,332 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 13:32:31,332 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 13:32:31,332 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 13:32:31,334 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 13:32:31,334 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 13:32:31,334 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 13:32:31,334 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 13:32:31,334 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 13:32:31,335 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 13:32:31,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 13:32:31,335 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 13:32:31,336 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 13:32:31,336 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 13:32:31,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 13:32:31,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 13:32:31,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 13:32:31,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 13:32:31,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 13:32:31,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 13:32:31,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 13:32:31,337 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 13:32:31,337 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 13:32:31,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 13:32:31,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 13:32:31,339 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 13:32:31,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 13:32:31,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 13:32:31,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 13:32:31,422 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 13:32:31,422 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 13:32:31,423 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label11_false-unreach-call.c [2018-10-24 13:32:31,483 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c822a226/6562c213a9114cbf9705c195a9f8228d/FLAG9b373c231 [2018-10-24 13:32:32,505 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 13:32:32,506 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label11_false-unreach-call.c [2018-10-24 13:32:32,551 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c822a226/6562c213a9114cbf9705c195a9f8228d/FLAG9b373c231 [2018-10-24 13:32:32,572 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c822a226/6562c213a9114cbf9705c195a9f8228d [2018-10-24 13:32:32,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 13:32:32,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 13:32:32,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 13:32:32,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 13:32:32,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 13:32:32,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:32:32" (1/1) ... [2018-10-24 13:32:32,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:32, skipping insertion in model container [2018-10-24 13:32:32,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:32:32" (1/1) ... [2018-10-24 13:32:32,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 13:32:32,886 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 13:32:34,962 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:32:34,968 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 13:32:36,058 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:32:36,125 INFO L193 MainTranslator]: Completed translation [2018-10-24 13:32:36,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36 WrapperNode [2018-10-24 13:32:36,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 13:32:36,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 13:32:36,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 13:32:36,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 13:32:36,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:36,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:36,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 13:32:36,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 13:32:36,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 13:32:36,978 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 13:32:36,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:36,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (1/1) ... [2018-10-24 13:32:37,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 13:32:37,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 13:32:37,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 13:32:37,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 13:32:37,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (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 [2018-10-24 13:32:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 13:32:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 13:32:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 13:32:49,910 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 13:32:49,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:32:49 BoogieIcfgContainer [2018-10-24 13:32:49,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 13:32:49,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 13:32:49,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 13:32:49,916 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 13:32:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:32:32" (1/3) ... [2018-10-24 13:32:49,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c462eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:32:49, skipping insertion in model container [2018-10-24 13:32:49,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:32:36" (2/3) ... [2018-10-24 13:32:49,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c462eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:32:49, skipping insertion in model container [2018-10-24 13:32:49,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:32:49" (3/3) ... [2018-10-24 13:32:49,921 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label11_false-unreach-call.c [2018-10-24 13:32:49,931 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 13:32:49,942 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 13:32:49,961 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 13:32:50,010 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 13:32:50,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 13:32:50,011 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 13:32:50,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 13:32:50,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 13:32:50,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 13:32:50,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 13:32:50,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 13:32:50,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 13:32:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2018-10-24 13:32:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-10-24 13:32:50,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:32:50,125 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:32:50,128 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:32:50,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:32:50,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1020889529, now seen corresponding path program 1 times [2018-10-24 13:32:50,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:32:50,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:32:50,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:32:50,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:32:50,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:32:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:32:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:32:53,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:32:53,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:32:53,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:32:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:32:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:32:53,831 INFO L87 Difference]: Start difference. First operand 1291 states. Second operand 4 states. [2018-10-24 13:33:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:33:10,115 INFO L93 Difference]: Finished difference Result 4717 states and 8969 transitions. [2018-10-24 13:33:10,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:33:10,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 933 [2018-10-24 13:33:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:33:10,172 INFO L225 Difference]: With dead ends: 4717 [2018-10-24 13:33:10,172 INFO L226 Difference]: Without dead ends: 3419 [2018-10-24 13:33:10,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:33:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2018-10-24 13:33:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3351. [2018-10-24 13:33:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2018-10-24 13:33:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 5784 transitions. [2018-10-24 13:33:10,355 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 5784 transitions. Word has length 933 [2018-10-24 13:33:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:33:10,358 INFO L481 AbstractCegarLoop]: Abstraction has 3351 states and 5784 transitions. [2018-10-24 13:33:10,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:33:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 5784 transitions. [2018-10-24 13:33:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2018-10-24 13:33:10,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:33:10,396 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:33:10,396 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:33:10,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:33:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1258404211, now seen corresponding path program 1 times [2018-10-24 13:33:10,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:33:10,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:33:10,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:10,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:33:11,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:33:11,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:33:11,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:33:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:33:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:33:11,493 INFO L87 Difference]: Start difference. First operand 3351 states and 5784 transitions. Second operand 3 states. [2018-10-24 13:33:20,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:33:20,216 INFO L93 Difference]: Finished difference Result 9740 states and 16942 transitions. [2018-10-24 13:33:20,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:33:20,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 947 [2018-10-24 13:33:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:33:20,255 INFO L225 Difference]: With dead ends: 9740 [2018-10-24 13:33:20,255 INFO L226 Difference]: Without dead ends: 6391 [2018-10-24 13:33:20,264 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 [2018-10-24 13:33:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2018-10-24 13:33:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6382. [2018-10-24 13:33:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6382 states. [2018-10-24 13:33:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 10235 transitions. [2018-10-24 13:33:20,599 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 10235 transitions. Word has length 947 [2018-10-24 13:33:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:33:20,600 INFO L481 AbstractCegarLoop]: Abstraction has 6382 states and 10235 transitions. [2018-10-24 13:33:20,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:33:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 10235 transitions. [2018-10-24 13:33:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-10-24 13:33:20,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:33:20,626 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:33:20,626 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:33:20,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:33:20,627 INFO L82 PathProgramCache]: Analyzing trace with hash 993706412, now seen corresponding path program 1 times [2018-10-24 13:33:20,627 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:33:20,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:33:20,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:20,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:20,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 13:33:21,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:33:21,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:33:21,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:33:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:33:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:33:21,339 INFO L87 Difference]: Start difference. First operand 6382 states and 10235 transitions. Second operand 3 states. [2018-10-24 13:33:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:33:23,558 INFO L93 Difference]: Finished difference Result 19119 states and 30678 transitions. [2018-10-24 13:33:23,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:33:23,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 955 [2018-10-24 13:33:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:33:23,619 INFO L225 Difference]: With dead ends: 19119 [2018-10-24 13:33:23,620 INFO L226 Difference]: Without dead ends: 12739 [2018-10-24 13:33:23,632 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 [2018-10-24 13:33:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12739 states. [2018-10-24 13:33:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12739 to 12735. [2018-10-24 13:33:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12735 states. [2018-10-24 13:33:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12735 states to 12735 states and 20393 transitions. [2018-10-24 13:33:23,924 INFO L78 Accepts]: Start accepts. Automaton has 12735 states and 20393 transitions. Word has length 955 [2018-10-24 13:33:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:33:23,924 INFO L481 AbstractCegarLoop]: Abstraction has 12735 states and 20393 transitions. [2018-10-24 13:33:23,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:33:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12735 states and 20393 transitions. [2018-10-24 13:33:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2018-10-24 13:33:23,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:33:23,960 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:33:23,961 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:33:23,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:33:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash 627673140, now seen corresponding path program 1 times [2018-10-24 13:33:23,962 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:33:23,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:33:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:23,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 13:33:24,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:33:24,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:33:24,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:33:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:33:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:33:24,967 INFO L87 Difference]: Start difference. First operand 12735 states and 20393 transitions. Second operand 4 states. [2018-10-24 13:33:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:33:36,264 INFO L93 Difference]: Finished difference Result 49504 states and 79736 transitions. [2018-10-24 13:33:36,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:33:36,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 958 [2018-10-24 13:33:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:33:36,377 INFO L225 Difference]: With dead ends: 49504 [2018-10-24 13:33:36,377 INFO L226 Difference]: Without dead ends: 36771 [2018-10-24 13:33:36,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:33:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36771 states. [2018-10-24 13:33:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36771 to 36677. [2018-10-24 13:33:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36677 states. [2018-10-24 13:33:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36677 states to 36677 states and 53450 transitions. [2018-10-24 13:33:37,012 INFO L78 Accepts]: Start accepts. Automaton has 36677 states and 53450 transitions. Word has length 958 [2018-10-24 13:33:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:33:37,013 INFO L481 AbstractCegarLoop]: Abstraction has 36677 states and 53450 transitions. [2018-10-24 13:33:37,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:33:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 36677 states and 53450 transitions. [2018-10-24 13:33:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2018-10-24 13:33:37,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:33:37,098 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:33:37,098 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:33:37,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:33:37,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1456558629, now seen corresponding path program 1 times [2018-10-24 13:33:37,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:33:37,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:33:37,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:37,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:37,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 13:33:38,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:33:38,125 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 [2018-10-24 13:33:38,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:38,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:33:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 13:33:39,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:33:39,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 13:33:39,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:33:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:33:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:33:39,584 INFO L87 Difference]: Start difference. First operand 36677 states and 53450 transitions. Second operand 5 states. [2018-10-24 13:33:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:33:52,529 INFO L93 Difference]: Finished difference Result 145195 states and 211892 transitions. [2018-10-24 13:33:52,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:33:52,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 972 [2018-10-24 13:33:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:33:52,724 INFO L225 Difference]: With dead ends: 145195 [2018-10-24 13:33:52,724 INFO L226 Difference]: Without dead ends: 108520 [2018-10-24 13:33:52,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 971 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:33:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108520 states. [2018-10-24 13:33:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108520 to 108422. [2018-10-24 13:33:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108422 states. [2018-10-24 13:33:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108422 states to 108422 states and 147071 transitions. [2018-10-24 13:33:54,417 INFO L78 Accepts]: Start accepts. Automaton has 108422 states and 147071 transitions. Word has length 972 [2018-10-24 13:33:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:33:54,418 INFO L481 AbstractCegarLoop]: Abstraction has 108422 states and 147071 transitions. [2018-10-24 13:33:54,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:33:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 108422 states and 147071 transitions. [2018-10-24 13:33:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-10-24 13:33:54,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:33:54,550 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:33:54,551 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:33:54,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:33:54,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1107902530, now seen corresponding path program 1 times [2018-10-24 13:33:54,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:33:54,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:33:54,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:54,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:33:54,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:33:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:33:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 13:33:55,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:33:55,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:33:55,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:33:55,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:33:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:33:55,231 INFO L87 Difference]: Start difference. First operand 108422 states and 147071 transitions. Second operand 3 states. [2018-10-24 13:34:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:34:04,743 INFO L93 Difference]: Finished difference Result 322392 states and 437506 transitions. [2018-10-24 13:34:04,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:34:04,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 994 [2018-10-24 13:34:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:34:05,232 INFO L225 Difference]: With dead ends: 322392 [2018-10-24 13:34:05,232 INFO L226 Difference]: Without dead ends: 213972 [2018-10-24 13:34:05,354 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 [2018-10-24 13:34:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213972 states. [2018-10-24 13:34:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213972 to 213928. [2018-10-24 13:34:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213928 states. [2018-10-24 13:34:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213928 states to 213928 states and 273855 transitions. [2018-10-24 13:34:09,488 INFO L78 Accepts]: Start accepts. Automaton has 213928 states and 273855 transitions. Word has length 994 [2018-10-24 13:34:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:34:09,489 INFO L481 AbstractCegarLoop]: Abstraction has 213928 states and 273855 transitions. [2018-10-24 13:34:09,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:34:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 213928 states and 273855 transitions. [2018-10-24 13:34:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2018-10-24 13:34:09,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:34:09,700 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:34:09,700 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:34:09,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:34:09,702 INFO L82 PathProgramCache]: Analyzing trace with hash 805602328, now seen corresponding path program 1 times [2018-10-24 13:34:09,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:34:09,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:34:09,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:34:09,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:34:09,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:34:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:34:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 13:34:10,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:34:10,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:34:10,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:34:10,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:34:10,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:34:10,595 INFO L87 Difference]: Start difference. First operand 213928 states and 273855 transitions. Second operand 3 states. [2018-10-24 13:34:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:34:21,649 INFO L93 Difference]: Finished difference Result 531618 states and 673300 transitions. [2018-10-24 13:34:21,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:34:21,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1024 [2018-10-24 13:34:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:34:22,100 INFO L225 Difference]: With dead ends: 531618 [2018-10-24 13:34:22,101 INFO L226 Difference]: Without dead ends: 317692 [2018-10-24 13:34:22,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:34:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317692 states. [2018-10-24 13:34:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317692 to 317651. [2018-10-24 13:34:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317651 states. [2018-10-24 13:34:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317651 states to 317651 states and 398690 transitions. [2018-10-24 13:34:26,419 INFO L78 Accepts]: Start accepts. Automaton has 317651 states and 398690 transitions. Word has length 1024 [2018-10-24 13:34:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:34:26,420 INFO L481 AbstractCegarLoop]: Abstraction has 317651 states and 398690 transitions. [2018-10-24 13:34:26,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:34:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 317651 states and 398690 transitions. [2018-10-24 13:34:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2018-10-24 13:34:26,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:34:26,660 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:34:26,660 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:34:26,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:34:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash 651161634, now seen corresponding path program 1 times [2018-10-24 13:34:26,661 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:34:26,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:34:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:34:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:34:26,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:34:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:34:27,281 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-24 13:34:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 13:34:29,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:34:29,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:34:29,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:34:29,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:34:29,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:34:29,685 INFO L87 Difference]: Start difference. First operand 317651 states and 398690 transitions. Second operand 4 states. [2018-10-24 13:34:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:34:44,995 INFO L93 Difference]: Finished difference Result 958460 states and 1180902 transitions. [2018-10-24 13:34:44,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:34:44,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1039 [2018-10-24 13:34:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:34:46,300 INFO L225 Difference]: With dead ends: 958460 [2018-10-24 13:34:46,300 INFO L226 Difference]: Without dead ends: 640811 [2018-10-24 13:34:46,581 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 [2018-10-24 13:34:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640811 states. [2018-10-24 13:35:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640811 to 479188. [2018-10-24 13:35:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479188 states. [2018-10-24 13:35:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479188 states to 479188 states and 589577 transitions. [2018-10-24 13:35:04,536 INFO L78 Accepts]: Start accepts. Automaton has 479188 states and 589577 transitions. Word has length 1039 [2018-10-24 13:35:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:35:04,537 INFO L481 AbstractCegarLoop]: Abstraction has 479188 states and 589577 transitions. [2018-10-24 13:35:04,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:35:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 479188 states and 589577 transitions. [2018-10-24 13:35:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2018-10-24 13:35:04,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:35:04,910 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:35:04,911 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:35:04,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:35:04,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1837445486, now seen corresponding path program 1 times [2018-10-24 13:35:04,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:35:04,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:35:04,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:35:04,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:35:04,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:35:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:35:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 13:35:07,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:35:07,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:35:07,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:35:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:35:07,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:35:07,544 INFO L87 Difference]: Start difference. First operand 479188 states and 589577 transitions. Second operand 4 states. [2018-10-24 13:35:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:35:28,402 INFO L93 Difference]: Finished difference Result 1832361 states and 2250536 transitions. [2018-10-24 13:35:28,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:35:28,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1051 [2018-10-24 13:35:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:35:30,406 INFO L225 Difference]: With dead ends: 1832361 [2018-10-24 13:35:30,406 INFO L226 Difference]: Without dead ends: 1353175 [2018-10-24 13:35:30,630 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 [2018-10-24 13:35:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353175 states. Received shutdown request... [2018-10-24 13:35:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353175 to 920642. [2018-10-24 13:35:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920642 states. [2018-10-24 13:35:56,447 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 13:35:56,451 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 13:35:56,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:35:56 BoogieIcfgContainer [2018-10-24 13:35:56,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 13:35:56,452 INFO L168 Benchmark]: Toolchain (without parser) took 203866.03 ms. Allocated memory was 1.5 GB in the beginning and 6.2 GB in the end (delta: 4.7 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 4.5 GB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,454 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 13:35:56,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3537.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 851.40 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,458 INFO L168 Benchmark]: Boogie Preprocessor took 318.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,459 INFO L168 Benchmark]: RCFGBuilder took 12614.62 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.4 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 414.5 MB). Peak memory consumption was 640.5 MB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,462 INFO L168 Benchmark]: TraceAbstraction took 186539.09 ms. Allocated memory was 2.6 GB in the beginning and 6.2 GB in the end (delta: 3.6 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-10-24 13:35:56,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3537.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 851.40 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 318.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12614.62 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.4 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 414.5 MB). Peak memory consumption was 640.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 186539.09 ms. Allocated memory was 2.6 GB in the beginning and 6.2 GB in the end (delta: 3.6 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9288]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9288). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1291 locations, 1 error locations. TIMEOUT Result, 186.4s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 113.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10856 SDtfs, 21035 SDslu, 4560 SDs, 0 SdLazy, 41150 SolverSat, 10640 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 998 GetRequests, 980 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=479188occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 55.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 161981 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 9845 NumberOfCodeBlocks, 9845 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 9835 ConstructedInterpolants, 0 QuantifiedInterpolants, 12274933 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 741/746 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown