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_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 15:25:22,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 15:25:22,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 15:25:22,488 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 15:25:22,488 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 15:25:22,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 15:25:22,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 15:25:22,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 15:25:22,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 15:25:22,495 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 15:25:22,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 15:25:22,496 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 15:25:22,497 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 15:25:22,498 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 15:25:22,499 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 15:25:22,500 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 15:25:22,501 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 15:25:22,503 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 15:25:22,506 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 15:25:22,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 15:25:22,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 15:25:22,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 15:25:22,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 15:25:22,513 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 15:25:22,513 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 15:25:22,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 15:25:22,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 15:25:22,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 15:25:22,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 15:25:22,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 15:25:22,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 15:25:22,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 15:25:22,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 15:25:22,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 15:25:22,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 15:25:22,521 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 15:25:22,522 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 15:25:22,551 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 15:25:22,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 15:25:22,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 15:25:22,553 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 15:25:22,553 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 15:25:22,553 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 15:25:22,554 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 15:25:22,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 15:25:22,554 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 15:25:22,554 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 15:25:22,554 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 15:25:22,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 15:25:22,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 15:25:22,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 15:25:22,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 15:25:22,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 15:25:22,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 15:25:22,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 15:25:22,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 15:25:22,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 15:25:22,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 15:25:22,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 15:25:22,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 15:25:22,559 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 15:25:22,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 15:25:22,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 15:25:22,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 15:25:22,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 15:25:22,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 15:25:22,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 15:25:22,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 15:25:22,635 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 15:25:22,635 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 15:25:22,636 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label32_true-unreach-call.c [2018-10-24 15:25:22,701 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/293ae495a/90f38b7a61c1421fbf42d12aba878048/FLAG96e0e4f11 [2018-10-24 15:25:23,627 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 15:25:23,629 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label32_true-unreach-call.c [2018-10-24 15:25:23,679 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/293ae495a/90f38b7a61c1421fbf42d12aba878048/FLAG96e0e4f11 [2018-10-24 15:25:23,700 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/293ae495a/90f38b7a61c1421fbf42d12aba878048 [2018-10-24 15:25:23,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 15:25:23,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 15:25:23,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 15:25:23,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 15:25:23,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 15:25:23,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:25:23" (1/1) ... [2018-10-24 15:25:23,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ee9256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:23, skipping insertion in model container [2018-10-24 15:25:23,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:25:23" (1/1) ... [2018-10-24 15:25:23,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 15:25:24,009 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 15:25:26,271 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:25:26,277 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 15:25:27,488 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:25:27,554 INFO L193 MainTranslator]: Completed translation [2018-10-24 15:25:27,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27 WrapperNode [2018-10-24 15:25:27,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 15:25:27,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 15:25:27,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 15:25:27,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 15:25:27,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:27,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 15:25:28,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 15:25:28,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 15:25:28,404 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 15:25:28,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (1/1) ... [2018-10-24 15:25:28,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 15:25:28,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 15:25:28,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 15:25:28,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 15:25:28,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (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 15:25:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 15:25:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 15:25:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 15:25:40,810 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 15:25:40,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:25:40 BoogieIcfgContainer [2018-10-24 15:25:40,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 15:25:40,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 15:25:40,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 15:25:40,817 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 15:25:40,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:25:23" (1/3) ... [2018-10-24 15:25:40,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba04d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:25:40, skipping insertion in model container [2018-10-24 15:25:40,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:25:27" (2/3) ... [2018-10-24 15:25:40,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cba04d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:25:40, skipping insertion in model container [2018-10-24 15:25:40,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:25:40" (3/3) ... [2018-10-24 15:25:40,821 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label32_true-unreach-call.c [2018-10-24 15:25:40,831 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 15:25:40,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 15:25:40,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 15:25:40,909 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 15:25:40,910 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 15:25:40,910 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 15:25:40,910 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 15:25:40,911 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 15:25:40,911 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 15:25:40,911 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 15:25:40,911 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 15:25:40,911 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 15:25:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2018-10-24 15:25:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-10-24 15:25:41,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:25:41,051 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] [2018-10-24 15:25:41,056 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:25:41,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:25:41,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1269665010, now seen corresponding path program 1 times [2018-10-24 15:25:41,066 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:25:41,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:25:41,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:25:41,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:25:41,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:25:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:25:44,467 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 15:25:44,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:25:44,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:25:44,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:25:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:25:44,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:25:44,493 INFO L87 Difference]: Start difference. First operand 1291 states. Second operand 3 states. [2018-10-24 15:25:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:25:54,874 INFO L93 Difference]: Finished difference Result 3667 states and 6881 transitions. [2018-10-24 15:25:54,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:25:54,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 964 [2018-10-24 15:25:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:25:54,934 INFO L225 Difference]: With dead ends: 3667 [2018-10-24 15:25:54,934 INFO L226 Difference]: Without dead ends: 2372 [2018-10-24 15:25:54,944 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 15:25:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2018-10-24 15:25:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2363. [2018-10-24 15:25:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2018-10-24 15:25:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 4042 transitions. [2018-10-24 15:25:55,093 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 4042 transitions. Word has length 964 [2018-10-24 15:25:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:25:55,096 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 4042 transitions. [2018-10-24 15:25:55,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:25:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 4042 transitions. [2018-10-24 15:25:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2018-10-24 15:25:55,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:25:55,141 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] [2018-10-24 15:25:55,142 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:25:55,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:25:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2044859019, now seen corresponding path program 1 times [2018-10-24 15:25:55,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:25:55,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:25:55,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:25:55,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:25:55,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:25:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:25:55,954 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 15:25:55,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:25:55,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:25:55,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:25:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:25:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:25:55,959 INFO L87 Difference]: Start difference. First operand 2363 states and 4042 transitions. Second operand 3 states. [2018-10-24 15:26:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:26:03,860 INFO L93 Difference]: Finished difference Result 6780 states and 11722 transitions. [2018-10-24 15:26:03,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:26:03,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 973 [2018-10-24 15:26:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:26:03,886 INFO L225 Difference]: With dead ends: 6780 [2018-10-24 15:26:03,886 INFO L226 Difference]: Without dead ends: 4419 [2018-10-24 15:26:03,892 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 15:26:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2018-10-24 15:26:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4405. [2018-10-24 15:26:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2018-10-24 15:26:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6969 transitions. [2018-10-24 15:26:03,982 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6969 transitions. Word has length 973 [2018-10-24 15:26:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:26:03,983 INFO L481 AbstractCegarLoop]: Abstraction has 4405 states and 6969 transitions. [2018-10-24 15:26:03,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:26:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6969 transitions. [2018-10-24 15:26:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2018-10-24 15:26:03,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:26:04,000 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] [2018-10-24 15:26:04,000 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:26:04,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:26:04,001 INFO L82 PathProgramCache]: Analyzing trace with hash -662067678, now seen corresponding path program 1 times [2018-10-24 15:26:04,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:26:04,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:26:04,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:04,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:26:04,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:26:04,781 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 15:26:04,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:26:04,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:26:04,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:26:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:26:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:26:04,785 INFO L87 Difference]: Start difference. First operand 4405 states and 6969 transitions. Second operand 4 states. [2018-10-24 15:26:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:26:19,678 INFO L93 Difference]: Finished difference Result 16867 states and 26901 transitions. [2018-10-24 15:26:19,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:26:19,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 977 [2018-10-24 15:26:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:26:19,741 INFO L225 Difference]: With dead ends: 16867 [2018-10-24 15:26:19,742 INFO L226 Difference]: Without dead ends: 12464 [2018-10-24 15:26:19,754 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 15:26:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2018-10-24 15:26:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 12419. [2018-10-24 15:26:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12419 states. [2018-10-24 15:26:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12419 states to 12419 states and 18195 transitions. [2018-10-24 15:26:20,228 INFO L78 Accepts]: Start accepts. Automaton has 12419 states and 18195 transitions. Word has length 977 [2018-10-24 15:26:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:26:20,229 INFO L481 AbstractCegarLoop]: Abstraction has 12419 states and 18195 transitions. [2018-10-24 15:26:20,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:26:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12419 states and 18195 transitions. [2018-10-24 15:26:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-10-24 15:26:20,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:26:20,271 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] [2018-10-24 15:26:20,272 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:26:20,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:26:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash 411933888, now seen corresponding path program 1 times [2018-10-24 15:26:20,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:26:20,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:26:20,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:20,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:26:20,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:26:20,967 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 15:26:20,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:26:20,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:26:20,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:26:20,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:26:20,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:26:20,970 INFO L87 Difference]: Start difference. First operand 12419 states and 18195 transitions. Second operand 4 states. [2018-10-24 15:26:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:26:31,276 INFO L93 Difference]: Finished difference Result 48869 states and 71761 transitions. [2018-10-24 15:26:31,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:26:31,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 994 [2018-10-24 15:26:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:26:31,368 INFO L225 Difference]: With dead ends: 48869 [2018-10-24 15:26:31,369 INFO L226 Difference]: Without dead ends: 36452 [2018-10-24 15:26:31,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:26:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36452 states. [2018-10-24 15:26:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36452 to 36395. [2018-10-24 15:26:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36395 states. [2018-10-24 15:26:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36395 states to 36395 states and 49567 transitions. [2018-10-24 15:26:31,901 INFO L78 Accepts]: Start accepts. Automaton has 36395 states and 49567 transitions. Word has length 994 [2018-10-24 15:26:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:26:31,901 INFO L481 AbstractCegarLoop]: Abstraction has 36395 states and 49567 transitions. [2018-10-24 15:26:31,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:26:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 36395 states and 49567 transitions. [2018-10-24 15:26:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2018-10-24 15:26:31,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:26:31,976 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:31,976 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:26:31,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:26:31,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1457635554, now seen corresponding path program 1 times [2018-10-24 15:26:31,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:26:31,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:26:31,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:31,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:26:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:26:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 15:26:32,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:26:32,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:26:32,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:26:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:26:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:26:32,878 INFO L87 Difference]: Start difference. First operand 36395 states and 49567 transitions. Second operand 3 states. [2018-10-24 15:26:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:26:41,242 INFO L93 Difference]: Finished difference Result 90870 states and 122246 transitions. [2018-10-24 15:26:41,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:26:41,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1004 [2018-10-24 15:26:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:26:41,348 INFO L225 Difference]: With dead ends: 90870 [2018-10-24 15:26:41,348 INFO L226 Difference]: Without dead ends: 54477 [2018-10-24 15:26:41,395 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 15:26:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54477 states. [2018-10-24 15:26:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54477 to 54459. [2018-10-24 15:26:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54459 states. [2018-10-24 15:26:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54459 states to 54459 states and 72485 transitions. [2018-10-24 15:26:42,079 INFO L78 Accepts]: Start accepts. Automaton has 54459 states and 72485 transitions. Word has length 1004 [2018-10-24 15:26:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:26:42,079 INFO L481 AbstractCegarLoop]: Abstraction has 54459 states and 72485 transitions. [2018-10-24 15:26:42,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:26:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 54459 states and 72485 transitions. [2018-10-24 15:26:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2018-10-24 15:26:42,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:26:42,169 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:42,169 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:26:42,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:26:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1294979794, now seen corresponding path program 1 times [2018-10-24 15:26:42,172 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:26:42,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:26:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:42,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:26:42,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:26:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:26:42,990 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-24 15:26:43,493 WARN L179 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 15:26:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:26:44,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:26:44,851 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 15:26:44,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:26:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:26:45,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:26:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 15:26:46,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:26:46,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 15:26:46,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 15:26:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 15:26:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 15:26:46,286 INFO L87 Difference]: Start difference. First operand 54459 states and 72485 transitions. Second operand 7 states. [2018-10-24 15:27:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:27:40,379 INFO L93 Difference]: Finished difference Result 617202 states and 804046 transitions. [2018-10-24 15:27:40,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 15:27:40,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1044 [2018-10-24 15:27:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:27:41,669 INFO L225 Difference]: With dead ends: 617202 [2018-10-24 15:27:41,670 INFO L226 Difference]: Without dead ends: 562745 [2018-10-24 15:27:42,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1053 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2018-10-24 15:27:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562745 states. [2018-10-24 15:27:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562745 to 562065. [2018-10-24 15:27:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562065 states. [2018-10-24 15:27:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562065 states to 562065 states and 681464 transitions. [2018-10-24 15:27:50,037 INFO L78 Accepts]: Start accepts. Automaton has 562065 states and 681464 transitions. Word has length 1044 [2018-10-24 15:27:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:27:50,037 INFO L481 AbstractCegarLoop]: Abstraction has 562065 states and 681464 transitions. [2018-10-24 15:27:50,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 15:27:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 562065 states and 681464 transitions. [2018-10-24 15:27:50,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-10-24 15:27:50,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:27:50,588 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:50,589 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:27:50,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:27:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -494331349, now seen corresponding path program 1 times [2018-10-24 15:27:50,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:27:50,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:27:50,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:50,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:27:50,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:27:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:28:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 15:28:00,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:28:00,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:28:00,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:28:00,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:28:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:28:00,318 INFO L87 Difference]: Start difference. First operand 562065 states and 681464 transitions. Second operand 3 states. [2018-10-24 15:28:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:28:12,961 INFO L93 Difference]: Finished difference Result 1406778 states and 1690356 transitions. [2018-10-24 15:28:12,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:28:12,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1064 [2018-10-24 15:28:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:28:14,345 INFO L225 Difference]: With dead ends: 1406778 [2018-10-24 15:28:14,346 INFO L226 Difference]: Without dead ends: 844715 [2018-10-24 15:28:14,651 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 15:28:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844715 states. [2018-10-24 15:28:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844715 to 844642. [2018-10-24 15:28:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844642 states. Received shutdown request... [2018-10-24 15:28:47,364 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 15:28:47,370 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 15:28:47,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:28:47 BoogieIcfgContainer [2018-10-24 15:28:47,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 15:28:47,372 INFO L168 Benchmark]: Toolchain (without parser) took 203657.78 ms. Allocated memory was 1.5 GB in the beginning and 7.1 GB in the end (delta: 5.6 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 5.1 GB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,373 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 15:28:47,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3838.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 847.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 824.7 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 108.3 MB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,376 INFO L168 Benchmark]: Boogie Preprocessor took 390.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,377 INFO L168 Benchmark]: RCFGBuilder took 12018.31 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 222.8 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 432.8 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,378 INFO L168 Benchmark]: TraceAbstraction took 186558.26 ms. Allocated memory was 2.6 GB in the beginning and 7.1 GB in the end (delta: 4.6 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-10-24 15:28:47,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3838.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 847.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 824.7 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 108.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 390.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12018.31 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 222.8 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 432.8 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 186558.26 ms. Allocated memory was 2.6 GB in the beginning and 7.1 GB in the end (delta: 4.6 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9381]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9381). Cancelled while ReachableStatesComputation was computing reachable states (842531 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1291 locations, 1 error locations. TIMEOUT Result, 186.4s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 122.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8220 SDtfs, 21019 SDslu, 5466 SDs, 0 SdLazy, 63911 SolverSat, 10486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1084 GetRequests, 1059 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562065occurred in iteration=6, 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: 42.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 823 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 8064 NumberOfCodeBlocks, 8064 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 8056 ConstructedInterpolants, 0 QuantifiedInterpolants, 13824205 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1240 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 418/428 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown