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_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 19:05:46,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 19:05:46,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 19:05:46,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 19:05:46,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 19:05:46,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 19:05:46,323 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 19:05:46,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 19:05:46,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 19:05:46,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 19:05:46,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 19:05:46,329 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 19:05:46,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 19:05:46,331 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 19:05:46,332 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 19:05:46,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 19:05:46,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 19:05:46,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 19:05:46,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 19:05:46,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 19:05:46,340 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 19:05:46,342 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 19:05:46,344 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 19:05:46,344 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 19:05:46,345 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 19:05:46,346 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 19:05:46,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 19:05:46,347 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 19:05:46,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 19:05:46,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 19:05:46,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 19:05:46,351 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 19:05:46,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 19:05:46,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 19:05:46,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 19:05:46,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 19:05:46,353 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 19:05:46,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 19:05:46,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 19:05:46,382 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 19:05:46,382 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 19:05:46,383 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 19:05:46,383 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 19:05:46,383 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 19:05:46,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 19:05:46,385 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 19:05:46,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 19:05:46,385 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 19:05:46,385 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 19:05:46,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 19:05:46,386 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 19:05:46,386 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 19:05:46,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 19:05:46,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 19:05:46,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 19:05:46,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 19:05:46,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 19:05:46,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 19:05:46,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 19:05:46,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 19:05:46,388 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 19:05:46,388 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 19:05:46,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 19:05:46,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 19:05:46,388 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 19:05:46,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 19:05:46,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 19:05:46,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 19:05:46,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 19:05:46,462 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 19:05:46,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label47_true-unreach-call.c [2018-10-23 19:05:46,531 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2e7e9e752/08eb803409a2454384c07ce2353f705f/FLAG7290c7e11 [2018-10-23 19:05:47,292 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 19:05:47,293 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label47_true-unreach-call.c [2018-10-23 19:05:47,333 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2e7e9e752/08eb803409a2454384c07ce2353f705f/FLAG7290c7e11 [2018-10-23 19:05:47,353 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2e7e9e752/08eb803409a2454384c07ce2353f705f [2018-10-23 19:05:47,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 19:05:47,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 19:05:47,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 19:05:47,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 19:05:47,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 19:05:47,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:05:47" (1/1) ... [2018-10-23 19:05:47,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:47, skipping insertion in model container [2018-10-23 19:05:47,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:05:47" (1/1) ... [2018-10-23 19:05:47,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 19:05:47,573 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 19:05:49,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 19:05:49,140 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 19:05:49,824 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 19:05:49,867 INFO L193 MainTranslator]: Completed translation [2018-10-23 19:05:49,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49 WrapperNode [2018-10-23 19:05:49,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 19:05:49,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 19:05:49,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 19:05:49,873 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 19:05:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:49,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 19:05:50,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 19:05:50,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 19:05:50,419 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 19:05:50,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (1/1) ... [2018-10-23 19:05:50,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 19:05:50,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 19:05:50,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 19:05:50,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 19:05:50,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (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 19:05:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 19:05:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 19:05:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 19:06:00,779 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 19:06:00,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:06:00 BoogieIcfgContainer [2018-10-23 19:06:00,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 19:06:00,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 19:06:00,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 19:06:00,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 19:06:00,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:05:47" (1/3) ... [2018-10-23 19:06:00,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac82dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:06:00, skipping insertion in model container [2018-10-23 19:06:00,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:05:49" (2/3) ... [2018-10-23 19:06:00,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac82dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:06:00, skipping insertion in model container [2018-10-23 19:06:00,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:06:00" (3/3) ... [2018-10-23 19:06:00,797 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label47_true-unreach-call.c [2018-10-23 19:06:00,806 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 19:06:00,816 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 19:06:00,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 19:06:00,879 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 19:06:00,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 19:06:00,880 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 19:06:00,880 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 19:06:00,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 19:06:00,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 19:06:00,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 19:06:00,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 19:06:00,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 19:06:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-23 19:06:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2018-10-23 19:06:00,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:00,971 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] [2018-10-23 19:06:00,973 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:00,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:00,980 INFO L82 PathProgramCache]: Analyzing trace with hash -24455691, now seen corresponding path program 1 times [2018-10-23 19:06:00,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:00,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:01,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:01,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:01,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:03,962 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 19:06:03,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:03,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:06:03,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:06:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:06:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:06:03,986 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 4 states. [2018-10-23 19:06:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:06:16,915 INFO L93 Difference]: Finished difference Result 3414 states and 6666 transitions. [2018-10-23 19:06:16,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:06:16,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 787 [2018-10-23 19:06:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:06:16,984 INFO L225 Difference]: With dead ends: 3414 [2018-10-23 19:06:16,984 INFO L226 Difference]: Without dead ends: 2521 [2018-10-23 19:06:17,000 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 19:06:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2018-10-23 19:06:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2018-10-23 19:06:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2018-10-23 19:06:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 4287 transitions. [2018-10-23 19:06:17,179 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 4287 transitions. Word has length 787 [2018-10-23 19:06:17,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:06:17,182 INFO L481 AbstractCegarLoop]: Abstraction has 2521 states and 4287 transitions. [2018-10-23 19:06:17,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:06:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 4287 transitions. [2018-10-23 19:06:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-10-23 19:06:17,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:17,210 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 19:06:17,210 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:17,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash 910959315, now seen corresponding path program 1 times [2018-10-23 19:06:17,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:17,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:17,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 19:06:18,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:18,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:06:18,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:06:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:06:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:06:18,929 INFO L87 Difference]: Start difference. First operand 2521 states and 4287 transitions. Second operand 4 states. [2018-10-23 19:06:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:06:28,232 INFO L93 Difference]: Finished difference Result 9954 states and 17020 transitions. [2018-10-23 19:06:28,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:06:28,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 803 [2018-10-23 19:06:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:06:28,271 INFO L225 Difference]: With dead ends: 9954 [2018-10-23 19:06:28,272 INFO L226 Difference]: Without dead ends: 7435 [2018-10-23 19:06:28,278 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 19:06:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2018-10-23 19:06:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7435. [2018-10-23 19:06:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2018-10-23 19:06:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11097 transitions. [2018-10-23 19:06:28,410 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11097 transitions. Word has length 803 [2018-10-23 19:06:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:06:28,412 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 11097 transitions. [2018-10-23 19:06:28,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:06:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11097 transitions. [2018-10-23 19:06:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2018-10-23 19:06:28,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:28,433 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-10-23 19:06:28,433 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:28,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash -20640606, now seen corresponding path program 1 times [2018-10-23 19:06:28,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:28,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:28,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:28,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:28,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 19:06:29,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:29,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:06:29,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 19:06:29,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 19:06:29,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 19:06:29,357 INFO L87 Difference]: Start difference. First operand 7435 states and 11097 transitions. Second operand 5 states. [2018-10-23 19:06:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:06:36,972 INFO L93 Difference]: Finished difference Result 29610 states and 44260 transitions. [2018-10-23 19:06:36,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:06:36,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 813 [2018-10-23 19:06:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:06:37,068 INFO L225 Difference]: With dead ends: 29610 [2018-10-23 19:06:37,069 INFO L226 Difference]: Without dead ends: 22177 [2018-10-23 19:06:37,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 19:06:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2018-10-23 19:06:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22177. [2018-10-23 19:06:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2018-10-23 19:06:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 29835 transitions. [2018-10-23 19:06:37,620 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 29835 transitions. Word has length 813 [2018-10-23 19:06:37,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:06:37,621 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 29835 transitions. [2018-10-23 19:06:37,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 19:06:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 29835 transitions. [2018-10-23 19:06:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2018-10-23 19:06:37,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:37,980 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 19:06:37,981 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:37,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash -417816284, now seen corresponding path program 1 times [2018-10-23 19:06:37,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:37,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:37,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:37,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-23 19:06:38,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:38,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:06:38,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:06:38,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:06:38,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:06:38,523 INFO L87 Difference]: Start difference. First operand 22177 states and 29835 transitions. Second operand 4 states. [2018-10-23 19:06:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:06:45,512 INFO L93 Difference]: Finished difference Result 83664 states and 112792 transitions. [2018-10-23 19:06:45,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:06:45,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 915 [2018-10-23 19:06:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:06:45,638 INFO L225 Difference]: With dead ends: 83664 [2018-10-23 19:06:45,638 INFO L226 Difference]: Without dead ends: 61489 [2018-10-23 19:06:45,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:06:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61489 states. [2018-10-23 19:06:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61489 to 61489. [2018-10-23 19:06:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61489 states. [2018-10-23 19:06:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61489 states to 61489 states and 74793 transitions. [2018-10-23 19:06:46,670 INFO L78 Accepts]: Start accepts. Automaton has 61489 states and 74793 transitions. Word has length 915 [2018-10-23 19:06:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:06:46,671 INFO L481 AbstractCegarLoop]: Abstraction has 61489 states and 74793 transitions. [2018-10-23 19:06:46,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:06:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 61489 states and 74793 transitions. [2018-10-23 19:06:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2018-10-23 19:06:46,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:46,755 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 19:06:46,756 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:46,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1462061615, now seen corresponding path program 1 times [2018-10-23 19:06:46,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:46,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:46,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:46,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:46,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-10-23 19:06:47,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:47,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:06:47,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:06:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:06:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:06:47,807 INFO L87 Difference]: Start difference. First operand 61489 states and 74793 transitions. Second operand 3 states. [2018-10-23 19:06:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:06:53,296 INFO L93 Difference]: Finished difference Result 128707 states and 158029 transitions. [2018-10-23 19:06:53,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:06:53,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 947 [2018-10-23 19:06:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:06:53,425 INFO L225 Difference]: With dead ends: 128707 [2018-10-23 19:06:53,426 INFO L226 Difference]: Without dead ends: 68039 [2018-10-23 19:06:53,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:06:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68039 states. [2018-10-23 19:06:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68039 to 68039. [2018-10-23 19:06:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68039 states. [2018-10-23 19:06:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68039 states to 68039 states and 81288 transitions. [2018-10-23 19:06:54,379 INFO L78 Accepts]: Start accepts. Automaton has 68039 states and 81288 transitions. Word has length 947 [2018-10-23 19:06:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:06:54,380 INFO L481 AbstractCegarLoop]: Abstraction has 68039 states and 81288 transitions. [2018-10-23 19:06:54,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:06:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 68039 states and 81288 transitions. [2018-10-23 19:06:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2018-10-23 19:06:54,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:06:54,446 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2018-10-23 19:06:54,447 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:06:54,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:06:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1657526912, now seen corresponding path program 1 times [2018-10-23 19:06:54,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:06:54,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:06:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:54,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:06:54,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:06:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:06:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-23 19:06:55,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:06:55,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:06:55,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:06:55,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:06:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:06:55,568 INFO L87 Difference]: Start difference. First operand 68039 states and 81288 transitions. Second operand 3 states. [2018-10-23 19:07:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:01,515 INFO L93 Difference]: Finished difference Result 178664 states and 214145 transitions. [2018-10-23 19:07:01,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:07:01,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 956 [2018-10-23 19:07:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:01,638 INFO L225 Difference]: With dead ends: 178664 [2018-10-23 19:07:01,638 INFO L226 Difference]: Without dead ends: 111446 [2018-10-23 19:07:01,693 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 19:07:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111446 states. [2018-10-23 19:07:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111446 to 111446. [2018-10-23 19:07:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111446 states. [2018-10-23 19:07:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111446 states to 111446 states and 127378 transitions. [2018-10-23 19:07:03,065 INFO L78 Accepts]: Start accepts. Automaton has 111446 states and 127378 transitions. Word has length 956 [2018-10-23 19:07:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:03,066 INFO L481 AbstractCegarLoop]: Abstraction has 111446 states and 127378 transitions. [2018-10-23 19:07:03,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:07:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 111446 states and 127378 transitions. [2018-10-23 19:07:03,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2018-10-23 19:07:03,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:07:03,214 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 19:07:03,214 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:07:03,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:07:03,215 INFO L82 PathProgramCache]: Analyzing trace with hash 651140397, now seen corresponding path program 1 times [2018-10-23 19:07:03,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:07:03,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:07:03,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:03,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:07:03,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:07:04,343 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 19:07:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2018-10-23 19:07:05,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:07:05,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:07:05,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:07:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:07:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:07:05,362 INFO L87 Difference]: Start difference. First operand 111446 states and 127378 transitions. Second operand 4 states. [2018-10-23 19:07:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:13,541 INFO L93 Difference]: Finished difference Result 222071 states and 253929 transitions. [2018-10-23 19:07:13,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:07:13,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1282 [2018-10-23 19:07:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:13,663 INFO L225 Difference]: With dead ends: 222071 [2018-10-23 19:07:13,663 INFO L226 Difference]: Without dead ends: 103236 [2018-10-23 19:07:13,738 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 19:07:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103236 states. [2018-10-23 19:07:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103236 to 103236. [2018-10-23 19:07:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103236 states. [2018-10-23 19:07:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103236 states to 103236 states and 113029 transitions. [2018-10-23 19:07:14,801 INFO L78 Accepts]: Start accepts. Automaton has 103236 states and 113029 transitions. Word has length 1282 [2018-10-23 19:07:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:14,802 INFO L481 AbstractCegarLoop]: Abstraction has 103236 states and 113029 transitions. [2018-10-23 19:07:14,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:07:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 103236 states and 113029 transitions. [2018-10-23 19:07:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2018-10-23 19:07:14,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:07:14,899 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:14,899 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:07:14,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:07:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1625561743, now seen corresponding path program 1 times [2018-10-23 19:07:14,900 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:07:14,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:07:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:07:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:07:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2018-10-23 19:07:16,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:07:16,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:07:16,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:07:16,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:07:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:07:16,926 INFO L87 Difference]: Start difference. First operand 103236 states and 113029 transitions. Second operand 3 states. [2018-10-23 19:07:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:21,941 INFO L93 Difference]: Finished difference Result 222850 states and 243845 transitions. [2018-10-23 19:07:21,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:07:21,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1455 [2018-10-23 19:07:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:22,047 INFO L225 Difference]: With dead ends: 222850 [2018-10-23 19:07:22,047 INFO L226 Difference]: Without dead ends: 120435 [2018-10-23 19:07:22,102 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 19:07:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120435 states. [2018-10-23 19:07:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120435 to 118797. [2018-10-23 19:07:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118797 states. [2018-10-23 19:07:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118797 states to 118797 states and 129514 transitions. [2018-10-23 19:07:23,091 INFO L78 Accepts]: Start accepts. Automaton has 118797 states and 129514 transitions. Word has length 1455 [2018-10-23 19:07:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:23,091 INFO L481 AbstractCegarLoop]: Abstraction has 118797 states and 129514 transitions. [2018-10-23 19:07:23,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:07:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 118797 states and 129514 transitions. [2018-10-23 19:07:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2018-10-23 19:07:23,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:07:23,144 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, 1, 1, 1, 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 19:07:23,145 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:07:23,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:07:23,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1631199732, now seen corresponding path program 1 times [2018-10-23 19:07:23,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:07:23,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:07:23,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:23,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:07:23,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:07:27,445 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 19:07:27,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:07:27,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 19:07:27,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 19:07:27,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 19:07:27,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 19:07:27,447 INFO L87 Difference]: Start difference. First operand 118797 states and 129514 transitions. Second operand 6 states. [2018-10-23 19:07:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:38,586 INFO L93 Difference]: Finished difference Result 249877 states and 272455 transitions. [2018-10-23 19:07:38,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 19:07:38,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1457 [2018-10-23 19:07:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:38,719 INFO L225 Difference]: With dead ends: 249877 [2018-10-23 19:07:38,720 INFO L226 Difference]: Without dead ends: 122061 [2018-10-23 19:07:38,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 19:07:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122061 states. [2018-10-23 19:07:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122061 to 122061. [2018-10-23 19:07:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122061 states. [2018-10-23 19:07:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122061 states to 122061 states and 125807 transitions. [2018-10-23 19:07:39,883 INFO L78 Accepts]: Start accepts. Automaton has 122061 states and 125807 transitions. Word has length 1457 [2018-10-23 19:07:39,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:39,883 INFO L481 AbstractCegarLoop]: Abstraction has 122061 states and 125807 transitions. [2018-10-23 19:07:39,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 19:07:39,883 INFO L276 IsEmpty]: Start isEmpty. Operand 122061 states and 125807 transitions. [2018-10-23 19:07:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1598 [2018-10-23 19:07:39,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:07:39,954 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:39,954 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:07:39,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:07:39,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1064816378, now seen corresponding path program 1 times [2018-10-23 19:07:39,955 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:07:39,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:07:39,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:39,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:07:39,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:07:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 1354 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-23 19:07:42,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:07:42,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:07:42,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:07:42,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:07:42,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:07:42,371 INFO L87 Difference]: Start difference. First operand 122061 states and 125807 transitions. Second operand 4 states. [2018-10-23 19:07:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:47,776 INFO L93 Difference]: Finished difference Result 259681 states and 267910 transitions. [2018-10-23 19:07:47,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:07:47,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1597 [2018-10-23 19:07:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:48,199 INFO L225 Difference]: With dead ends: 259681 [2018-10-23 19:07:48,199 INFO L226 Difference]: Without dead ends: 138441 [2018-10-23 19:07:48,245 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 19:07:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138441 states. [2018-10-23 19:07:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138441 to 138441. [2018-10-23 19:07:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138441 states. [2018-10-23 19:07:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138441 states to 138441 states and 142501 transitions. [2018-10-23 19:07:49,374 INFO L78 Accepts]: Start accepts. Automaton has 138441 states and 142501 transitions. Word has length 1597 [2018-10-23 19:07:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:49,375 INFO L481 AbstractCegarLoop]: Abstraction has 138441 states and 142501 transitions. [2018-10-23 19:07:49,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:07:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 138441 states and 142501 transitions. [2018-10-23 19:07:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1945 [2018-10-23 19:07:49,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:07:49,467 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 19:07:49,467 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:07:49,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:07:49,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1356226144, now seen corresponding path program 1 times [2018-10-23 19:07:49,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:07:49,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:07:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:49,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:07:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:07:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:07:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 1807 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-10-23 19:07:53,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:07:53,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:07:53,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:07:53,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:07:53,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:07:53,301 INFO L87 Difference]: Start difference. First operand 138441 states and 142501 transitions. Second operand 4 states. [2018-10-23 19:07:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:07:58,598 INFO L93 Difference]: Finished difference Result 276061 states and 284177 transitions. [2018-10-23 19:07:58,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:07:58,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1944 [2018-10-23 19:07:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:07:58,741 INFO L225 Difference]: With dead ends: 276061 [2018-10-23 19:07:58,741 INFO L226 Difference]: Without dead ends: 138441 [2018-10-23 19:07:58,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 19:07:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138441 states. [2018-10-23 19:07:59,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138441 to 138441. [2018-10-23 19:07:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138441 states. [2018-10-23 19:07:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138441 states to 138441 states and 141710 transitions. [2018-10-23 19:07:59,941 INFO L78 Accepts]: Start accepts. Automaton has 138441 states and 141710 transitions. Word has length 1944 [2018-10-23 19:07:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:07:59,942 INFO L481 AbstractCegarLoop]: Abstraction has 138441 states and 141710 transitions. [2018-10-23 19:07:59,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:07:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 138441 states and 141710 transitions. [2018-10-23 19:08:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2000 [2018-10-23 19:08:00,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:08:00,041 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 19:08:00,041 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:08:00,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:08:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1926343738, now seen corresponding path program 1 times [2018-10-23 19:08:00,042 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:08:00,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:08:00,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:00,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:08:00,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:08:01,558 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-23 19:08:01,724 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 19:08:01,907 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 19:08:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3099 backedges. 1768 proven. 263 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2018-10-23 19:08:05,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 19:08:05,165 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 19:08:05,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:08:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:08:05,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 19:08:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3099 backedges. 2141 proven. 0 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2018-10-23 19:08:08,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 19:08:08,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 19:08:08,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 19:08:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 19:08:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 19:08:08,070 INFO L87 Difference]: Start difference. First operand 138441 states and 141710 transitions. Second operand 8 states. [2018-10-23 19:08:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:08:26,338 INFO L93 Difference]: Finished difference Result 276278 states and 282812 transitions. [2018-10-23 19:08:26,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 19:08:26,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1999 [2018-10-23 19:08:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:08:26,652 INFO L225 Difference]: With dead ends: 276278 [2018-10-23 19:08:26,652 INFO L226 Difference]: Without dead ends: 132098 [2018-10-23 19:08:27,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2020 GetRequests, 2006 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2018-10-23 19:08:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132098 states. [2018-10-23 19:08:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132098 to 129424. [2018-10-23 19:08:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129424 states. [2018-10-23 19:08:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129424 states to 129424 states and 131755 transitions. [2018-10-23 19:08:29,349 INFO L78 Accepts]: Start accepts. Automaton has 129424 states and 131755 transitions. Word has length 1999 [2018-10-23 19:08:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:08:29,350 INFO L481 AbstractCegarLoop]: Abstraction has 129424 states and 131755 transitions. [2018-10-23 19:08:29,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 19:08:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 129424 states and 131755 transitions. [2018-10-23 19:08:29,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2022 [2018-10-23 19:08:29,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:08:29,501 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 19:08:29,501 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:08:29,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:08:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -575487848, now seen corresponding path program 1 times [2018-10-23 19:08:29,502 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:08:29,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:08:29,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:29,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:08:29,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:08:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 1736 proven. 0 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2018-10-23 19:08:33,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:08:33,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:08:33,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:08:33,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:08:33,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:08:33,037 INFO L87 Difference]: Start difference. First operand 129424 states and 131755 transitions. Second operand 4 states. [2018-10-23 19:08:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:08:37,318 INFO L93 Difference]: Finished difference Result 258845 states and 263518 transitions. [2018-10-23 19:08:37,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:08:37,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2021 [2018-10-23 19:08:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:08:37,470 INFO L225 Difference]: With dead ends: 258845 [2018-10-23 19:08:37,471 INFO L226 Difference]: Without dead ends: 128602 [2018-10-23 19:08:37,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:08:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128602 states. [2018-10-23 19:08:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128602 to 126145. [2018-10-23 19:08:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126145 states. [2018-10-23 19:08:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126145 states to 126145 states and 128123 transitions. [2018-10-23 19:08:38,864 INFO L78 Accepts]: Start accepts. Automaton has 126145 states and 128123 transitions. Word has length 2021 [2018-10-23 19:08:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:08:38,865 INFO L481 AbstractCegarLoop]: Abstraction has 126145 states and 128123 transitions. [2018-10-23 19:08:38,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:08:38,865 INFO L276 IsEmpty]: Start isEmpty. Operand 126145 states and 128123 transitions. [2018-10-23 19:08:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2654 [2018-10-23 19:08:38,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:08:38,987 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 19:08:38,988 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:08:38,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:08:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1392650516, now seen corresponding path program 1 times [2018-10-23 19:08:38,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:08:38,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:08:38,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:38,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:08:38,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:08:40,581 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-23 19:08:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4071 backedges. 1273 proven. 0 refuted. 0 times theorem prover too weak. 2798 trivial. 0 not checked. [2018-10-23 19:08:46,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:08:46,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 19:08:46,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:08:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:08:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:08:46,432 INFO L87 Difference]: Start difference. First operand 126145 states and 128123 transitions. Second operand 4 states. [2018-10-23 19:08:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:08:51,309 INFO L93 Difference]: Finished difference Result 254745 states and 258753 transitions. [2018-10-23 19:08:51,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:08:51,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2653 [2018-10-23 19:08:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:08:51,460 INFO L225 Difference]: With dead ends: 254745 [2018-10-23 19:08:51,460 INFO L226 Difference]: Without dead ends: 129421 [2018-10-23 19:08:51,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:08:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129421 states. [2018-10-23 19:08:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129421 to 126145. [2018-10-23 19:08:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126145 states. [2018-10-23 19:08:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126145 states to 126145 states and 127713 transitions. [2018-10-23 19:08:52,638 INFO L78 Accepts]: Start accepts. Automaton has 126145 states and 127713 transitions. Word has length 2653 [2018-10-23 19:08:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:08:52,639 INFO L481 AbstractCegarLoop]: Abstraction has 126145 states and 127713 transitions. [2018-10-23 19:08:52,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:08:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 126145 states and 127713 transitions. [2018-10-23 19:08:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2673 [2018-10-23 19:08:53,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:08:53,078 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:53,079 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:08:53,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:08:53,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2137630590, now seen corresponding path program 1 times [2018-10-23 19:08:53,080 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:08:53,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:08:53,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:53,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:08:53,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:08:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:08:54,621 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 19:08:54,830 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 19:09:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4016 backedges. 2203 proven. 8 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2018-10-23 19:09:02,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 19:09:02,739 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 19:09:02,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:09:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:09:03,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 19:09:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4016 backedges. 2364 proven. 0 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2018-10-23 19:09:07,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 19:09:07,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2018-10-23 19:09:07,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 19:09:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 19:09:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-23 19:09:07,613 INFO L87 Difference]: Start difference. First operand 126145 states and 127713 transitions. Second operand 14 states. Received shutdown request... [2018-10-23 19:09:23,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 19:09:23,478 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 19:09:23,484 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 19:09:23,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:09:23 BoogieIcfgContainer [2018-10-23 19:09:23,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 19:09:23,486 INFO L168 Benchmark]: Toolchain (without parser) took 216117.42 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,487 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. [2018-10-23 19:09:23,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2497.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 547.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,490 INFO L168 Benchmark]: Boogie Preprocessor took 302.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,490 INFO L168 Benchmark]: RCFGBuilder took 10058.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 196.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -106.0 MB). Peak memory consumption was 659.6 MB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,491 INFO L168 Benchmark]: TraceAbstraction took 202703.46 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 904.2 MB. Max. memory is 7.1 GB. [2018-10-23 19:09:23,497 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 2497.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 547.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 302.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10058.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 196.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -106.0 MB). Peak memory consumption was 659.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202703.46 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 904.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4715]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4715). Cancelled while BasicCegarLoop was constructing difference of abstraction (126145states) and FLOYD_HOARE automaton (currently 15 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (50913 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 15 OverallIterations, 9 TraceHistogramMax, 130.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8169 SDtfs, 49706 SDslu, 1140 SDs, 0 SdLazy, 76816 SolverSat, 15046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4770 GetRequests, 4702 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138441occurred in iteration=10, 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: 13.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 10045 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 26972 NumberOfCodeBlocks, 26972 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 26955 ConstructedInterpolants, 0 QuantifiedInterpolants, 123303132 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5328 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 29080/29351 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown