java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 15:26:47,356 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 15:26:47,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 15:26:47,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 15:26:47,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 15:26:47,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 15:26:47,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 15:26:47,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 15:26:47,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 15:26:47,384 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 15:26:47,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 15:26:47,385 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 15:26:47,388 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 15:26:47,389 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 15:26:47,390 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 15:26:47,393 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 15:26:47,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 15:26:47,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 15:26:47,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 15:26:47,410 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 15:26:47,411 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 15:26:47,412 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 15:26:47,415 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 15:26:47,415 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 15:26:47,415 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 15:26:47,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 15:26:47,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 15:26:47,418 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 15:26:47,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 15:26:47,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 15:26:47,420 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 15:26:47,420 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 15:26:47,420 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 15:26:47,421 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 15:26:47,422 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 15:26:47,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 15:26:47,423 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 15:26:47,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 15:26:47,443 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 15:26:47,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 15:26:47,444 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 15:26:47,445 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 15:26:47,445 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 15:26:47,445 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 15:26:47,445 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 15:26:47,446 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 15:26:47,446 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 15:26:47,446 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 15:26:47,446 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 15:26:47,446 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 15:26:47,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 15:26:47,447 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 15:26:47,447 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 15:26:47,447 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 15:26:47,447 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 15:26:47,448 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 15:26:47,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 15:26:47,448 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 15:26:47,448 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 15:26:47,448 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 15:26:47,449 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 15:26:47,449 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 15:26:47,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 15:26:47,449 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 15:26:47,449 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 15:26:47,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 15:26:47,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 15:26:47,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 15:26:47,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 15:26:47,535 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 15:26:47,535 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label42_true-unreach-call.c [2018-10-24 15:26:47,599 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f3bac1a5/a52da55f13b54c3c9a07b7505ff0abe0/FLAGd0b5e7220 [2018-10-24 15:26:48,492 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 15:26:48,493 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label42_true-unreach-call.c [2018-10-24 15:26:48,554 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f3bac1a5/a52da55f13b54c3c9a07b7505ff0abe0/FLAGd0b5e7220 [2018-10-24 15:26:48,577 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f3bac1a5/a52da55f13b54c3c9a07b7505ff0abe0 [2018-10-24 15:26:48,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 15:26:48,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 15:26:48,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 15:26:48,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 15:26:48,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 15:26:48,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:26:48" (1/1) ... [2018-10-24 15:26:48,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4569e7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:48, skipping insertion in model container [2018-10-24 15:26:48,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:26:48" (1/1) ... [2018-10-24 15:26:48,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 15:26:48,855 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 15:26:50,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:26:50,902 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 15:26:52,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:26:52,110 INFO L193 MainTranslator]: Completed translation [2018-10-24 15:26:52,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52 WrapperNode [2018-10-24 15:26:52,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 15:26:52,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 15:26:52,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 15:26:52,113 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 15:26:52,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:52,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:52,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 15:26:52,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 15:26:52,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 15:26:52,942 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 15:26:52,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:52,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... [2018-10-24 15:26:53,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 15:26:53,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 15:26:53,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 15:26:53,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 15:26:53,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 15:26:53,484 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 15:26:53,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 15:26:53,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 15:27:03,901 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 15:27:03,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:03 BoogieIcfgContainer [2018-10-24 15:27:03,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 15:27:03,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 15:27:03,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 15:27:03,906 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 15:27:03,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:26:48" (1/3) ... [2018-10-24 15:27:03,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141e5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:03, skipping insertion in model container [2018-10-24 15:27:03,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:52" (2/3) ... [2018-10-24 15:27:03,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141e5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:03, skipping insertion in model container [2018-10-24 15:27:03,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:03" (3/3) ... [2018-10-24 15:27:03,910 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label42_true-unreach-call.c [2018-10-24 15:27:03,920 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 15:27:03,930 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 15:27:03,947 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 15:27:03,991 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 15:27:03,992 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 15:27:03,992 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 15:27:03,992 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 15:27:03,992 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 15:27:03,992 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 15:27:03,992 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 15:27:03,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 15:27:03,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 15:27:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2018-10-24 15:27:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2018-10-24 15:27:04,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:04,121 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:27:04,124 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:04,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash 141016167, now seen corresponding path program 1 times [2018-10-24 15:27:04,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:04,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:04,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:27:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:27:07,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:27:07,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:27:07,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:27:07,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:27:07,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:27:07,627 INFO L87 Difference]: Start difference. First operand 1291 states. Second operand 3 states. [2018-10-24 15:27:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:27:16,832 INFO L93 Difference]: Finished difference Result 3667 states and 6881 transitions. [2018-10-24 15:27:16,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:27:16,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 973 [2018-10-24 15:27:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:27:16,881 INFO L225 Difference]: With dead ends: 3667 [2018-10-24 15:27:16,881 INFO L226 Difference]: Without dead ends: 2372 [2018-10-24 15:27:16,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:27:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2018-10-24 15:27:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2363. [2018-10-24 15:27:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2018-10-24 15:27:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 4042 transitions. [2018-10-24 15:27:17,057 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 4042 transitions. Word has length 973 [2018-10-24 15:27:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:27:17,061 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 4042 transitions. [2018-10-24 15:27:17,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:27:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 4042 transitions. [2018-10-24 15:27:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2018-10-24 15:27:17,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:17,108 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:27:17,108 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:17,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash -120112758, now seen corresponding path program 1 times [2018-10-24 15:27:17,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:17,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:17,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:17,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:17,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:27:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:27:18,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:27:18,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:27:18,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:27:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:27:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:27:18,028 INFO L87 Difference]: Start difference. First operand 2363 states and 4042 transitions. Second operand 3 states. [2018-10-24 15:27:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:27:26,370 INFO L93 Difference]: Finished difference Result 6780 states and 11722 transitions. [2018-10-24 15:27:26,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:27:26,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 982 [2018-10-24 15:27:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:27:26,396 INFO L225 Difference]: With dead ends: 6780 [2018-10-24 15:27:26,396 INFO L226 Difference]: Without dead ends: 4419 [2018-10-24 15:27:26,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:27:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2018-10-24 15:27:26,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4405. [2018-10-24 15:27:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2018-10-24 15:27:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6969 transitions. [2018-10-24 15:27:26,491 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6969 transitions. Word has length 982 [2018-10-24 15:27:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:27:26,492 INFO L481 AbstractCegarLoop]: Abstraction has 4405 states and 6969 transitions. [2018-10-24 15:27:26,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:27:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6969 transitions. [2018-10-24 15:27:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2018-10-24 15:27:26,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:26,511 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:27:26,512 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:26,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1767292883, now seen corresponding path program 1 times [2018-10-24 15:27:26,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:26,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:26,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:26,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:26,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:27:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:27:27,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:27:27,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:27:27,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:27:27,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:27:27,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:27:27,389 INFO L87 Difference]: Start difference. First operand 4405 states and 6969 transitions. Second operand 4 states. [2018-10-24 15:27:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:27:40,375 INFO L93 Difference]: Finished difference Result 16867 states and 26901 transitions. [2018-10-24 15:27:40,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:27:40,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 986 [2018-10-24 15:27:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:27:40,436 INFO L225 Difference]: With dead ends: 16867 [2018-10-24 15:27:40,436 INFO L226 Difference]: Without dead ends: 12464 [2018-10-24 15:27:40,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:27:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2018-10-24 15:27:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 12419. [2018-10-24 15:27:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12419 states. [2018-10-24 15:27:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12419 states to 12419 states and 18195 transitions. [2018-10-24 15:27:40,898 INFO L78 Accepts]: Start accepts. Automaton has 12419 states and 18195 transitions. Word has length 986 [2018-10-24 15:27:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:27:40,898 INFO L481 AbstractCegarLoop]: Abstraction has 12419 states and 18195 transitions. [2018-10-24 15:27:40,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:27:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12419 states and 18195 transitions. [2018-10-24 15:27:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2018-10-24 15:27:40,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:40,934 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:27:40,935 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:40,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash -725918987, now seen corresponding path program 1 times [2018-10-24 15:27:40,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:40,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:40,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:40,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:40,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:27:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 15:27:41,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:27:41,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:27:41,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:27:41,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:27:41,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:27:41,961 INFO L87 Difference]: Start difference. First operand 12419 states and 18195 transitions. Second operand 4 states. [2018-10-24 15:27:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:27:52,762 INFO L93 Difference]: Finished difference Result 48869 states and 71761 transitions. [2018-10-24 15:27:52,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:27:52,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1003 [2018-10-24 15:27:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:27:52,862 INFO L225 Difference]: With dead ends: 48869 [2018-10-24 15:27:52,863 INFO L226 Difference]: Without dead ends: 36452 [2018-10-24 15:27:52,883 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 [2018-10-24 15:27:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36452 states. [2018-10-24 15:27:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36452 to 36395. [2018-10-24 15:27:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36395 states. [2018-10-24 15:27:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36395 states to 36395 states and 49567 transitions. [2018-10-24 15:27:53,504 INFO L78 Accepts]: Start accepts. Automaton has 36395 states and 49567 transitions. Word has length 1003 [2018-10-24 15:27:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:27:53,505 INFO L481 AbstractCegarLoop]: Abstraction has 36395 states and 49567 transitions. [2018-10-24 15:27:53,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:27:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 36395 states and 49567 transitions. [2018-10-24 15:27:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2018-10-24 15:27:53,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:53,585 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:27:53,585 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:53,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1760812268, now seen corresponding path program 1 times [2018-10-24 15:27:53,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:53,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:53,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:53,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:53,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:27:53,895 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 15:27:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 15:27:54,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:27:54,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:27:54,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:27:54,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:27:54,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:27:54,427 INFO L87 Difference]: Start difference. First operand 36395 states and 49567 transitions. Second operand 3 states. [2018-10-24 15:28:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:28:01,625 INFO L93 Difference]: Finished difference Result 90870 states and 122246 transitions. [2018-10-24 15:28:01,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:28:01,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1041 [2018-10-24 15:28:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:28:01,758 INFO L225 Difference]: With dead ends: 90870 [2018-10-24 15:28:01,758 INFO L226 Difference]: Without dead ends: 54477 [2018-10-24 15:28:01,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:28:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54477 states. [2018-10-24 15:28:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54477 to 54459. [2018-10-24 15:28:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54459 states. [2018-10-24 15:28:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54459 states to 54459 states and 72485 transitions. [2018-10-24 15:28:02,570 INFO L78 Accepts]: Start accepts. Automaton has 54459 states and 72485 transitions. Word has length 1041 [2018-10-24 15:28:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:28:02,570 INFO L481 AbstractCegarLoop]: Abstraction has 54459 states and 72485 transitions. [2018-10-24 15:28:02,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:28:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 54459 states and 72485 transitions. [2018-10-24 15:28:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2018-10-24 15:28:02,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:28:02,654 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:28:02,654 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:28:02,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:28:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2044279282, now seen corresponding path program 1 times [2018-10-24 15:28:02,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:28:02,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:28:02,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:02,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:28:02,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:28:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 15:28:04,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:28:04,429 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 15:28:04,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:28:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:28:04,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:28:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 15:28:05,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:28:05,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2018-10-24 15:28:05,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:28:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:28:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:28:05,660 INFO L87 Difference]: Start difference. First operand 54459 states and 72485 transitions. Second operand 4 states. [2018-10-24 15:28:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:28:13,975 INFO L93 Difference]: Finished difference Result 217640 states and 289698 transitions. [2018-10-24 15:28:13,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:28:13,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1074 [2018-10-24 15:28:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:28:14,338 INFO L225 Difference]: With dead ends: 217640 [2018-10-24 15:28:14,338 INFO L226 Difference]: Without dead ends: 163183 [2018-10-24 15:28:14,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 1074 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:28:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163183 states. [2018-10-24 15:28:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163183 to 108765. [2018-10-24 15:28:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108765 states. [2018-10-24 15:28:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108765 states to 108765 states and 144628 transitions. [2018-10-24 15:28:16,164 INFO L78 Accepts]: Start accepts. Automaton has 108765 states and 144628 transitions. Word has length 1074 [2018-10-24 15:28:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:28:16,164 INFO L481 AbstractCegarLoop]: Abstraction has 108765 states and 144628 transitions. [2018-10-24 15:28:16,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:28:16,166 INFO L276 IsEmpty]: Start isEmpty. Operand 108765 states and 144628 transitions. [2018-10-24 15:28:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2018-10-24 15:28:16,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:28:16,435 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:28:16,436 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:28:16,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:28:16,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1203869779, now seen corresponding path program 1 times [2018-10-24 15:28:16,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:28:16,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:28:16,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:16,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:28:16,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:28:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 15:28:17,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:28:17,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:28:17,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:28:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:28:17,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:28:17,904 INFO L87 Difference]: Start difference. First operand 108765 states and 144628 transitions. Second operand 3 states. [2018-10-24 15:28:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:28:27,885 INFO L93 Difference]: Finished difference Result 324137 states and 431099 transitions. [2018-10-24 15:28:27,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:28:27,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1076 [2018-10-24 15:28:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:28:28,239 INFO L225 Difference]: With dead ends: 324137 [2018-10-24 15:28:28,239 INFO L226 Difference]: Without dead ends: 215374 [2018-10-24 15:28:28,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:28:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215374 states. [2018-10-24 15:28:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215374 to 215148. [2018-10-24 15:28:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215148 states. [2018-10-24 15:28:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215148 states to 215148 states and 267819 transitions. [2018-10-24 15:28:31,611 INFO L78 Accepts]: Start accepts. Automaton has 215148 states and 267819 transitions. Word has length 1076 [2018-10-24 15:28:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:28:31,612 INFO L481 AbstractCegarLoop]: Abstraction has 215148 states and 267819 transitions. [2018-10-24 15:28:31,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:28:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 215148 states and 267819 transitions. [2018-10-24 15:28:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2018-10-24 15:28:31,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:28:31,871 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:28:31,872 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:28:31,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:28:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -747807156, now seen corresponding path program 1 times [2018-10-24 15:28:31,873 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:28:31,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:28:31,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:31,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:28:31,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:28:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:28:32,527 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-24 15:28:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-10-24 15:28:33,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:28:33,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:28:33,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:28:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:28:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:28:33,230 INFO L87 Difference]: Start difference. First operand 215148 states and 267819 transitions. Second operand 4 states. [2018-10-24 15:28:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:28:45,822 INFO L93 Difference]: Finished difference Result 645006 states and 789382 transitions. [2018-10-24 15:28:45,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:28:45,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1097 [2018-10-24 15:28:45,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:28:47,729 INFO L225 Difference]: With dead ends: 645006 [2018-10-24 15:28:47,729 INFO L226 Difference]: Without dead ends: 429860 [2018-10-24 15:28:47,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:28:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429860 states. [2018-10-24 15:29:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429860 to 322967. [2018-10-24 15:29:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322967 states. [2018-10-24 15:29:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322967 states to 322967 states and 394678 transitions. [2018-10-24 15:29:01,415 INFO L78 Accepts]: Start accepts. Automaton has 322967 states and 394678 transitions. Word has length 1097 [2018-10-24 15:29:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:29:01,415 INFO L481 AbstractCegarLoop]: Abstraction has 322967 states and 394678 transitions. [2018-10-24 15:29:01,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:29:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 322967 states and 394678 transitions. [2018-10-24 15:29:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2018-10-24 15:29:01,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:29:01,754 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:29:01,754 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:29:01,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:29:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash 850862651, now seen corresponding path program 1 times [2018-10-24 15:29:01,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:29:01,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:29:01,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:29:01,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:29:01,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:29:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:29:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 227 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 15:29:03,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:29:03,689 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 [2018-10-24 15:29:03,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:29:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:29:04,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:29:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 15:29:05,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:29:05,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 15:29:05,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 15:29:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 15:29:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:29:05,561 INFO L87 Difference]: Start difference. First operand 322967 states and 394678 transitions. Second operand 5 states. [2018-10-24 15:29:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:29:17,814 INFO L93 Difference]: Finished difference Result 646094 states and 789664 transitions. [2018-10-24 15:29:17,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:29:17,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1132 [2018-10-24 15:29:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:29:18,235 INFO L225 Difference]: With dead ends: 646094 [2018-10-24 15:29:18,235 INFO L226 Difference]: Without dead ends: 323129 [2018-10-24 15:29:18,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1132 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:29:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323129 states. [2018-10-24 15:29:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323129 to 322967. [2018-10-24 15:29:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322967 states. [2018-10-24 15:29:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322967 states to 322967 states and 368599 transitions. [2018-10-24 15:29:23,001 INFO L78 Accepts]: Start accepts. Automaton has 322967 states and 368599 transitions. Word has length 1132 [2018-10-24 15:29:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:29:23,001 INFO L481 AbstractCegarLoop]: Abstraction has 322967 states and 368599 transitions. [2018-10-24 15:29:23,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 15:29:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 322967 states and 368599 transitions. [2018-10-24 15:29:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2018-10-24 15:29:23,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:29:23,254 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:29:23,254 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:29:23,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:29:23,255 INFO L82 PathProgramCache]: Analyzing trace with hash 194375529, now seen corresponding path program 1 times [2018-10-24 15:29:23,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:29:23,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:29:23,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:29:23,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:29:23,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:29:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:29:24,125 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-24 15:29:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 15:29:25,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:29:25,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:29:25,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:29:25,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:29:25,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:29:25,933 INFO L87 Difference]: Start difference. First operand 322967 states and 368599 transitions. Second operand 4 states. [2018-10-24 15:29:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:29:40,660 INFO L93 Difference]: Finished difference Result 963772 states and 1100443 transitions. [2018-10-24 15:29:40,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:29:40,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1142 [2018-10-24 15:29:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:29:41,545 INFO L225 Difference]: With dead ends: 963772 [2018-10-24 15:29:41,545 INFO L226 Difference]: Without dead ends: 640807 [2018-10-24 15:29:41,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:29:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640807 states. [2018-10-24 15:29:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640807 to 640417. [2018-10-24 15:29:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640417 states. [2018-10-24 15:30:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640417 states to 640417 states and 729385 transitions. [2018-10-24 15:30:01,570 INFO L78 Accepts]: Start accepts. Automaton has 640417 states and 729385 transitions. Word has length 1142 [2018-10-24 15:30:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:30:01,570 INFO L481 AbstractCegarLoop]: Abstraction has 640417 states and 729385 transitions. [2018-10-24 15:30:01,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:30:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 640417 states and 729385 transitions. [2018-10-24 15:30:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2018-10-24 15:30:02,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:30:02,038 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:30:02,038 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:30:02,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:30:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash 515082950, now seen corresponding path program 1 times [2018-10-24 15:30:02,039 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:30:02,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:30:02,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:30:02,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:30:02,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:30:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:30:02,833 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-24 15:30:03,313 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 15:30:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 154 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-24 15:30:04,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:30:04,480 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 15:30:04,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:30:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:30:04,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:30:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 15:30:05,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:30:05,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-24 15:30:05,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 15:30:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 15:30:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 15:30:05,480 INFO L87 Difference]: Start difference. First operand 640417 states and 729385 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 15:30:08,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 15:30:08,323 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 15:30:08,329 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 15:30:08,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:30:08 BoogieIcfgContainer [2018-10-24 15:30:08,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 15:30:08,331 INFO L168 Benchmark]: Toolchain (without parser) took 199739.93 ms. Allocated memory was 1.5 GB in the beginning and 6.5 GB in the end (delta: 5.0 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,332 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 15:30:08,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3516.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 359.4 MB). Peak memory consumption was 359.4 MB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 829.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.5 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,334 INFO L168 Benchmark]: Boogie Preprocessor took 472.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 59.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,335 INFO L168 Benchmark]: RCFGBuilder took 10487.43 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 224.9 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 420.3 MB). Peak memory consumption was 645.2 MB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,336 INFO L168 Benchmark]: TraceAbstraction took 184427.02 ms. Allocated memory was 2.6 GB in the beginning and 6.5 GB in the end (delta: 3.9 GB). Free memory was 1.8 GB in the beginning and 4.2 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 15:30:08,341 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 3516.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 359.4 MB). Peak memory consumption was 359.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 829.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.5 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 472.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 59.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10487.43 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 224.9 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 420.3 MB). Peak memory consumption was 645.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 184427.02 ms. Allocated memory was 2.6 GB in the beginning and 6.5 GB in the end (delta: 3.9 GB). Free memory was 1.8 GB in the beginning and 4.2 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9408]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9408). Cancelled while BasicCegarLoop was constructing difference of abstraction (640417states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (16487 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1291 locations, 1 error locations. TIMEOUT Result, 184.3s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 114.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12849 SDtfs, 26283 SDslu, 8114 SDs, 0 SdLazy, 47122 SolverSat, 10623 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3393 GetRequests, 3357 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=640417occurred 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: 45.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 162232 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 14998 NumberOfCodeBlocks, 14998 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 14984 ConstructedInterpolants, 0 QuantifiedInterpolants, 21903979 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4145 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 2112/2135 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown