java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 18:24:04,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 18:24:04,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 18:24:04,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 18:24:04,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 18:24:04,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 18:24:04,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 18:24:04,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 18:24:04,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 18:24:04,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 18:24:04,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 18:24:04,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 18:24:04,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 18:24:04,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 18:24:04,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 18:24:04,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 18:24:04,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 18:24:04,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 18:24:04,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 18:24:04,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 18:24:04,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 18:24:04,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 18:24:04,589 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 18:24:04,590 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 18:24:04,590 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 18:24:04,591 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 18:24:04,594 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 18:24:04,595 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 18:24:04,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 18:24:04,597 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 18:24:04,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 18:24:04,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 18:24:04,602 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 18:24:04,602 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 18:24:04,603 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 18:24:04,604 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 18:24:04,604 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 18:24:04,635 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 18:24:04,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 18:24:04,636 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 18:24:04,636 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 18:24:04,637 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 18:24:04,637 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 18:24:04,637 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 18:24:04,638 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 18:24:04,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 18:24:04,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 18:24:04,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 18:24:04,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 18:24:04,639 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 18:24:04,639 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 18:24:04,639 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 18:24:04,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 18:24:04,640 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 18:24:04,640 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 18:24:04,640 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 18:24:04,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 18:24:04,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 18:24:04,641 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 18:24:04,641 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 18:24:04,641 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 18:24:04,641 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 18:24:04,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 18:24:04,642 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 18:24:04,642 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 18:24:04,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 18:24:04,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 18:24:04,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 18:24:04,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 18:24:04,708 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 18:24:04,709 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label31_false-unreach-call.c [2018-11-06 18:24:04,765 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac6ce0e9/0e1a8eaacc114ca994952754944dbdcf/FLAGe165f0acf [2018-11-06 18:24:05,567 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 18:24:05,568 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label31_false-unreach-call.c [2018-11-06 18:24:05,608 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac6ce0e9/0e1a8eaacc114ca994952754944dbdcf/FLAGe165f0acf [2018-11-06 18:24:05,632 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac6ce0e9/0e1a8eaacc114ca994952754944dbdcf [2018-11-06 18:24:05,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 18:24:05,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 18:24:05,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 18:24:05,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 18:24:05,652 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 18:24:05,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:24:05" (1/1) ... [2018-11-06 18:24:05,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:05, skipping insertion in model container [2018-11-06 18:24:05,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:24:05" (1/1) ... [2018-11-06 18:24:05,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 18:24:05,846 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 18:24:07,274 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 18:24:07,279 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 18:24:07,971 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 18:24:08,010 INFO L193 MainTranslator]: Completed translation [2018-11-06 18:24:08,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08 WrapperNode [2018-11-06 18:24:08,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 18:24:08,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 18:24:08,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 18:24:08,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 18:24:08,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 18:24:08,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 18:24:08,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 18:24:08,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 18:24:08,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... [2018-11-06 18:24:08,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 18:24:08,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 18:24:08,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 18:24:08,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 18:24:08,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 18:24:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 18:24:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 18:24:08,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 18:24:18,448 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 18:24:18,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:24:18 BoogieIcfgContainer [2018-11-06 18:24:18,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 18:24:18,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 18:24:18,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 18:24:18,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 18:24:18,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:24:05" (1/3) ... [2018-11-06 18:24:18,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:24:18, skipping insertion in model container [2018-11-06 18:24:18,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:08" (2/3) ... [2018-11-06 18:24:18,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efa7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:24:18, skipping insertion in model container [2018-11-06 18:24:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:24:18" (3/3) ... [2018-11-06 18:24:18,459 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label31_false-unreach-call.c [2018-11-06 18:24:18,469 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 18:24:18,480 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 18:24:18,498 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 18:24:18,545 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 18:24:18,546 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 18:24:18,546 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 18:24:18,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 18:24:18,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 18:24:18,547 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 18:24:18,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 18:24:18,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 18:24:18,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 18:24:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-11-06 18:24:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2018-11-06 18:24:18,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:24:18,655 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] [2018-11-06 18:24:18,658 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:24:18,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:24:18,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1419833221, now seen corresponding path program 1 times [2018-11-06 18:24:18,668 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:24:18,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:24:18,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:18,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:24:18,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:24:20,986 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-06 18:24:21,146 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-06 18:24:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 18:24:24,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:24:24,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-06 18:24:24,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 18:24:24,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 18:24:24,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-06 18:24:24,761 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 8 states. [2018-11-06 18:24:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:24:45,927 INFO L93 Difference]: Finished difference Result 5886 states and 11579 transitions. [2018-11-06 18:24:45,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 18:24:45,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 759 [2018-11-06 18:24:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:24:45,989 INFO L225 Difference]: With dead ends: 5886 [2018-11-06 18:24:45,989 INFO L226 Difference]: Without dead ends: 4981 [2018-11-06 18:24:46,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 10 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-06 18:24:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2018-11-06 18:24:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4978. [2018-11-06 18:24:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4978 states. [2018-11-06 18:24:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 6266 transitions. [2018-11-06 18:24:46,206 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 6266 transitions. Word has length 759 [2018-11-06 18:24:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:24:46,209 INFO L480 AbstractCegarLoop]: Abstraction has 4978 states and 6266 transitions. [2018-11-06 18:24:46,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 18:24:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 6266 transitions. [2018-11-06 18:24:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2018-11-06 18:24:46,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:24:46,244 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, 2, 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] [2018-11-06 18:24:46,245 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:24:46,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:24:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash -121365279, now seen corresponding path program 1 times [2018-11-06 18:24:46,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:24:46,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:24:46,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:46,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:24:46,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:24:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-06 18:24:47,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 18:24:47,317 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 18:24:47,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:24:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:24:47,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 18:24:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 18:24:48,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 18:24:48,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 18:24:48,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 18:24:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 18:24:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 18:24:48,511 INFO L87 Difference]: Start difference. First operand 4978 states and 6266 transitions. Second operand 5 states. [2018-11-06 18:24:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:24:58,333 INFO L93 Difference]: Finished difference Result 15687 states and 20776 transitions. [2018-11-06 18:24:58,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 18:24:58,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 829 [2018-11-06 18:24:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:24:58,387 INFO L225 Difference]: With dead ends: 15687 [2018-11-06 18:24:58,387 INFO L226 Difference]: Without dead ends: 11530 [2018-11-06 18:24:58,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 828 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 18:24:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11530 states. [2018-11-06 18:24:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11530 to 11530. [2018-11-06 18:24:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11530 states. [2018-11-06 18:24:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11530 states to 11530 states and 14044 transitions. [2018-11-06 18:24:58,664 INFO L78 Accepts]: Start accepts. Automaton has 11530 states and 14044 transitions. Word has length 829 [2018-11-06 18:24:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:24:58,664 INFO L480 AbstractCegarLoop]: Abstraction has 11530 states and 14044 transitions. [2018-11-06 18:24:58,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 18:24:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 11530 states and 14044 transitions. [2018-11-06 18:24:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-11-06 18:24:58,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:24:58,696 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:24:58,696 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:24:58,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:24:58,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1959459801, now seen corresponding path program 1 times [2018-11-06 18:24:58,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:24:58,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:24:58,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:24:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:24:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:24:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 18:24:59,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:24:59,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 18:24:59,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 18:24:59,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 18:24:59,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:24:59,609 INFO L87 Difference]: Start difference. First operand 11530 states and 14044 transitions. Second operand 4 states. [2018-11-06 18:25:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:25:07,785 INFO L93 Difference]: Finished difference Result 38619 states and 48590 transitions. [2018-11-06 18:25:07,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 18:25:07,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 880 [2018-11-06 18:25:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:25:07,872 INFO L225 Difference]: With dead ends: 38619 [2018-11-06 18:25:07,872 INFO L226 Difference]: Without dead ends: 27910 [2018-11-06 18:25:07,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:25:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27910 states. [2018-11-06 18:25:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27910 to 27910. [2018-11-06 18:25:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27910 states. [2018-11-06 18:25:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27910 states to 27910 states and 33247 transitions. [2018-11-06 18:25:08,372 INFO L78 Accepts]: Start accepts. Automaton has 27910 states and 33247 transitions. Word has length 880 [2018-11-06 18:25:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:25:08,373 INFO L480 AbstractCegarLoop]: Abstraction has 27910 states and 33247 transitions. [2018-11-06 18:25:08,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 18:25:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27910 states and 33247 transitions. [2018-11-06 18:25:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-11-06 18:25:08,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:25:08,433 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 18:25:08,433 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:25:08,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:25:08,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1726509870, now seen corresponding path program 1 times [2018-11-06 18:25:08,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:25:08,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:25:08,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:08,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:08,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 127 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-06 18:25:09,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 18:25:09,718 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 18:25:09,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:10,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 18:25:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-11-06 18:25:10,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 18:25:10,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 18:25:10,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 18:25:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 18:25:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 18:25:10,712 INFO L87 Difference]: Start difference. First operand 27910 states and 33247 transitions. Second operand 5 states. [2018-11-06 18:25:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:25:21,581 INFO L93 Difference]: Finished difference Result 82845 states and 101811 transitions. [2018-11-06 18:25:21,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 18:25:21,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 887 [2018-11-06 18:25:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:25:21,697 INFO L225 Difference]: With dead ends: 82845 [2018-11-06 18:25:21,697 INFO L226 Difference]: Without dead ends: 54116 [2018-11-06 18:25:21,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 886 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 18:25:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54116 states. [2018-11-06 18:25:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54116 to 54116. [2018-11-06 18:25:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54116 states. [2018-11-06 18:25:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54116 states to 54116 states and 61065 transitions. [2018-11-06 18:25:22,443 INFO L78 Accepts]: Start accepts. Automaton has 54116 states and 61065 transitions. Word has length 887 [2018-11-06 18:25:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:25:22,444 INFO L480 AbstractCegarLoop]: Abstraction has 54116 states and 61065 transitions. [2018-11-06 18:25:22,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 18:25:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 54116 states and 61065 transitions. [2018-11-06 18:25:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2018-11-06 18:25:22,533 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:25:22,534 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:25:22,534 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:25:22,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:25:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash 526674507, now seen corresponding path program 1 times [2018-11-06 18:25:22,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:25:22,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:25:22,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:22,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:22,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-11-06 18:25:23,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:25:23,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 18:25:23,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 18:25:23,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 18:25:23,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 18:25:23,676 INFO L87 Difference]: Start difference. First operand 54116 states and 61065 transitions. Second operand 3 states. [2018-11-06 18:25:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:25:28,790 INFO L93 Difference]: Finished difference Result 114782 states and 130413 transitions. [2018-11-06 18:25:28,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 18:25:28,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1076 [2018-11-06 18:25:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:25:28,892 INFO L225 Difference]: With dead ends: 114782 [2018-11-06 18:25:28,892 INFO L226 Difference]: Without dead ends: 61487 [2018-11-06 18:25:28,953 INFO L604 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 [2018-11-06 18:25:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61487 states. [2018-11-06 18:25:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61487 to 61487. [2018-11-06 18:25:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61487 states. [2018-11-06 18:25:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61487 states to 61487 states and 69197 transitions. [2018-11-06 18:25:29,595 INFO L78 Accepts]: Start accepts. Automaton has 61487 states and 69197 transitions. Word has length 1076 [2018-11-06 18:25:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:25:29,596 INFO L480 AbstractCegarLoop]: Abstraction has 61487 states and 69197 transitions. [2018-11-06 18:25:29,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 18:25:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 61487 states and 69197 transitions. [2018-11-06 18:25:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2018-11-06 18:25:29,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:25:29,646 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 18:25:29,646 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:25:29,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:25:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1449609250, now seen corresponding path program 1 times [2018-11-06 18:25:29,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:25:29,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:25:29,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:29,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:29,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:30,481 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 18:25:30,746 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 18:25:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 566 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-11-06 18:25:33,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 18:25:33,146 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 18:25:33,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:33,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 18:25:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-06 18:25:34,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 18:25:34,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 18:25:34,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 18:25:34,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 18:25:34,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-06 18:25:34,771 INFO L87 Difference]: Start difference. First operand 61487 states and 69197 transitions. Second operand 8 states. [2018-11-06 18:25:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:25:50,577 INFO L93 Difference]: Finished difference Result 136258 states and 153274 transitions. [2018-11-06 18:25:50,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 18:25:50,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1286 [2018-11-06 18:25:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:25:50,679 INFO L225 Difference]: With dead ends: 136258 [2018-11-06 18:25:50,680 INFO L226 Difference]: Without dead ends: 75592 [2018-11-06 18:25:50,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1306 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-11-06 18:25:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75592 states. [2018-11-06 18:25:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75592 to 62306. [2018-11-06 18:25:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62306 states. [2018-11-06 18:25:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62306 states to 62306 states and 67973 transitions. [2018-11-06 18:25:51,718 INFO L78 Accepts]: Start accepts. Automaton has 62306 states and 67973 transitions. Word has length 1286 [2018-11-06 18:25:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:25:51,719 INFO L480 AbstractCegarLoop]: Abstraction has 62306 states and 67973 transitions. [2018-11-06 18:25:51,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 18:25:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 62306 states and 67973 transitions. [2018-11-06 18:25:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2018-11-06 18:25:51,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:25:51,792 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:25:51,792 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:25:51,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:25:51,793 INFO L82 PathProgramCache]: Analyzing trace with hash 238600890, now seen corresponding path program 1 times [2018-11-06 18:25:51,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:25:51,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:25:51,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:51,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:51,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:25:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 1011 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-06 18:25:53,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:25:53,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 18:25:53,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 18:25:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 18:25:53,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 18:25:53,961 INFO L87 Difference]: Start difference. First operand 62306 states and 67973 transitions. Second operand 3 states. [2018-11-06 18:25:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:25:58,678 INFO L93 Difference]: Finished difference Result 146720 states and 160747 transitions. [2018-11-06 18:25:58,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 18:25:58,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1453 [2018-11-06 18:25:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:25:58,759 INFO L225 Difference]: With dead ends: 146720 [2018-11-06 18:25:58,760 INFO L226 Difference]: Without dead ends: 85235 [2018-11-06 18:25:58,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 18:25:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85235 states. [2018-11-06 18:25:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85235 to 85235. [2018-11-06 18:25:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85235 states. [2018-11-06 18:25:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85235 states to 85235 states and 92560 transitions. [2018-11-06 18:25:59,519 INFO L78 Accepts]: Start accepts. Automaton has 85235 states and 92560 transitions. Word has length 1453 [2018-11-06 18:25:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:25:59,520 INFO L480 AbstractCegarLoop]: Abstraction has 85235 states and 92560 transitions. [2018-11-06 18:25:59,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 18:25:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 85235 states and 92560 transitions. [2018-11-06 18:25:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1459 [2018-11-06 18:25:59,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:25:59,588 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 18:25:59,589 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:25:59,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:25:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1212712904, now seen corresponding path program 1 times [2018-11-06 18:25:59,589 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:25:59,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:25:59,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:59,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:25:59,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:25:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:26:01,416 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-11-06 18:26:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 1044 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-11-06 18:26:03,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:26:03,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 18:26:03,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 18:26:03,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 18:26:03,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:26:03,087 INFO L87 Difference]: Start difference. First operand 85235 states and 92560 transitions. Second operand 4 states. [2018-11-06 18:26:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:26:09,487 INFO L93 Difference]: Finished difference Result 169649 states and 184293 transitions. [2018-11-06 18:26:09,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 18:26:09,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1458 [2018-11-06 18:26:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:26:09,576 INFO L225 Difference]: With dead ends: 169649 [2018-11-06 18:26:09,576 INFO L226 Difference]: Without dead ends: 84414 [2018-11-06 18:26:09,622 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:26:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84414 states. [2018-11-06 18:26:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84414 to 84414. [2018-11-06 18:26:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84414 states. [2018-11-06 18:26:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84414 states to 84414 states and 90955 transitions. [2018-11-06 18:26:10,612 INFO L78 Accepts]: Start accepts. Automaton has 84414 states and 90955 transitions. Word has length 1458 [2018-11-06 18:26:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:26:10,613 INFO L480 AbstractCegarLoop]: Abstraction has 84414 states and 90955 transitions. [2018-11-06 18:26:10,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 18:26:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 84414 states and 90955 transitions. [2018-11-06 18:26:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2018-11-06 18:26:10,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:26:10,665 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:26:10,665 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:26:10,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:26:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -817080223, now seen corresponding path program 1 times [2018-11-06 18:26:10,666 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:26:10,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:26:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:10,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:26:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:26:11,495 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 18:26:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 707 proven. 11 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-06 18:26:14,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 18:26:14,533 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 18:26:14,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:26:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:26:14,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 18:26:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-11-06 18:26:16,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 18:26:16,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-11-06 18:26:16,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 18:26:16,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 18:26:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-06 18:26:16,569 INFO L87 Difference]: Start difference. First operand 84414 states and 90955 transitions. Second operand 9 states. [2018-11-06 18:26:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:26:33,210 INFO L93 Difference]: Finished difference Result 181096 states and 195093 transitions. [2018-11-06 18:26:33,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 18:26:33,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1459 [2018-11-06 18:26:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:26:33,328 INFO L225 Difference]: With dead ends: 181096 [2018-11-06 18:26:33,329 INFO L226 Difference]: Without dead ends: 97503 [2018-11-06 18:26:33,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1463 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-11-06 18:26:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97503 states. [2018-11-06 18:26:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97503 to 81949. [2018-11-06 18:26:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81949 states. [2018-11-06 18:26:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81949 states to 81949 states and 86581 transitions. [2018-11-06 18:26:34,143 INFO L78 Accepts]: Start accepts. Automaton has 81949 states and 86581 transitions. Word has length 1459 [2018-11-06 18:26:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:26:34,143 INFO L480 AbstractCegarLoop]: Abstraction has 81949 states and 86581 transitions. [2018-11-06 18:26:34,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 18:26:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 81949 states and 86581 transitions. [2018-11-06 18:26:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3446 [2018-11-06 18:26:34,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:26:34,506 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:26:34,506 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:26:34,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:26:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 49765488, now seen corresponding path program 1 times [2018-11-06 18:26:34,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:26:34,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:26:34,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:34,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:26:34,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:26:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9968 backedges. 3474 proven. 0 refuted. 0 times theorem prover too weak. 6494 trivial. 0 not checked. [2018-11-06 18:26:39,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:26:39,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 18:26:39,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 18:26:39,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 18:26:39,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 18:26:39,879 INFO L87 Difference]: Start difference. First operand 81949 states and 86581 transitions. Second operand 3 states. [2018-11-06 18:26:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:26:44,182 INFO L93 Difference]: Finished difference Result 163077 states and 172335 transitions. [2018-11-06 18:26:44,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 18:26:44,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3445 [2018-11-06 18:26:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:26:44,282 INFO L225 Difference]: With dead ends: 163077 [2018-11-06 18:26:44,283 INFO L226 Difference]: Without dead ends: 81949 [2018-11-06 18:26:44,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 18:26:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81949 states. [2018-11-06 18:26:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81949 to 81949. [2018-11-06 18:26:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81949 states. [2018-11-06 18:26:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81949 states to 81949 states and 86259 transitions. [2018-11-06 18:26:45,577 INFO L78 Accepts]: Start accepts. Automaton has 81949 states and 86259 transitions. Word has length 3445 [2018-11-06 18:26:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:26:45,578 INFO L480 AbstractCegarLoop]: Abstraction has 81949 states and 86259 transitions. [2018-11-06 18:26:45,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 18:26:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 81949 states and 86259 transitions. [2018-11-06 18:26:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4030 [2018-11-06 18:26:45,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:26:45,730 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 18:26:45,730 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:26:45,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:26:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1674616128, now seen corresponding path program 1 times [2018-11-06 18:26:45,732 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:26:45,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:26:45,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:45,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:26:45,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:26:47,156 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 18:26:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12354 backedges. 2681 proven. 0 refuted. 0 times theorem prover too weak. 9673 trivial. 0 not checked. [2018-11-06 18:26:53,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:26:53,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 18:26:53,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 18:26:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 18:26:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:26:53,185 INFO L87 Difference]: Start difference. First operand 81949 states and 86259 transitions. Second operand 4 states. [2018-11-06 18:26:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:26:57,563 INFO L93 Difference]: Finished difference Result 163077 states and 171691 transitions. [2018-11-06 18:26:57,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 18:26:57,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4029 [2018-11-06 18:26:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:26:57,639 INFO L225 Difference]: With dead ends: 163077 [2018-11-06 18:26:57,640 INFO L226 Difference]: Without dead ends: 77845 [2018-11-06 18:26:57,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:26:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77845 states. [2018-11-06 18:26:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77845 to 77845. [2018-11-06 18:26:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77845 states. [2018-11-06 18:26:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77845 states to 77845 states and 78885 transitions. [2018-11-06 18:26:58,359 INFO L78 Accepts]: Start accepts. Automaton has 77845 states and 78885 transitions. Word has length 4029 [2018-11-06 18:26:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:26:58,360 INFO L480 AbstractCegarLoop]: Abstraction has 77845 states and 78885 transitions. [2018-11-06 18:26:58,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 18:26:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 77845 states and 78885 transitions. [2018-11-06 18:26:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5196 [2018-11-06 18:26:58,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:26:58,557 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 18:26:58,557 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:26:58,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:26:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash 957890044, now seen corresponding path program 1 times [2018-11-06 18:26:58,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:26:58,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:26:58,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:58,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:26:58,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:26:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:27:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 23623 backedges. 3583 proven. 0 refuted. 0 times theorem prover too weak. 20040 trivial. 0 not checked. [2018-11-06 18:27:09,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 18:27:09,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 18:27:09,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 18:27:09,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 18:27:09,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:27:09,989 INFO L87 Difference]: Start difference. First operand 77845 states and 78885 transitions. Second operand 4 states. [2018-11-06 18:27:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 18:27:15,359 INFO L93 Difference]: Finished difference Result 191728 states and 194320 transitions. [2018-11-06 18:27:15,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 18:27:15,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5195 [2018-11-06 18:27:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 18:27:15,458 INFO L225 Difference]: With dead ends: 191728 [2018-11-06 18:27:15,458 INFO L226 Difference]: Without dead ends: 108144 [2018-11-06 18:27:15,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 18:27:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108144 states. [2018-11-06 18:27:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108144 to 105687. [2018-11-06 18:27:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105687 states. [2018-11-06 18:27:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105687 states to 105687 states and 106924 transitions. [2018-11-06 18:27:16,409 INFO L78 Accepts]: Start accepts. Automaton has 105687 states and 106924 transitions. Word has length 5195 [2018-11-06 18:27:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 18:27:16,410 INFO L480 AbstractCegarLoop]: Abstraction has 105687 states and 106924 transitions. [2018-11-06 18:27:16,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 18:27:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 105687 states and 106924 transitions. [2018-11-06 18:27:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5486 [2018-11-06 18:27:16,632 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 18:27:16,634 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 18:27:16,634 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 18:27:16,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 18:27:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -387271475, now seen corresponding path program 1 times [2018-11-06 18:27:16,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 18:27:16,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 18:27:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:27:16,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:27:16,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 18:27:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:27:19,081 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-06 18:27:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 25041 backedges. 6200 proven. 263 refuted. 0 times theorem prover too weak. 18578 trivial. 0 not checked. [2018-11-06 18:27:35,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 18:27:35,134 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 18:27:35,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 18:27:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 18:27:36,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 18:27:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25041 backedges. 7610 proven. 0 refuted. 0 times theorem prover too weak. 17431 trivial. 0 not checked. [2018-11-06 18:27:45,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 18:27:45,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 18:27:45,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 18:27:45,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 18:27:45,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 18:27:45,708 INFO L87 Difference]: Start difference. First operand 105687 states and 106924 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 18:27:53,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 18:27:53,227 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 18:27:53,233 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 18:27:53,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:27:53 BoogieIcfgContainer [2018-11-06 18:27:53,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 18:27:53,235 INFO L168 Benchmark]: Toolchain (without parser) took 227589.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,236 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-06 18:27:53,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2364.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 552.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,239 INFO L168 Benchmark]: Boogie Preprocessor took 250.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,239 INFO L168 Benchmark]: RCFGBuilder took 9634.03 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -100.8 MB). Peak memory consumption was 653.7 MB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,240 INFO L168 Benchmark]: TraceAbstraction took 214782.96 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -386.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 18:27:53,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2364.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 552.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 250.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9634.03 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -100.8 MB). Peak memory consumption was 653.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214782.96 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -386.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4631]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4631). Cancelled while BasicCegarLoop was constructing difference of abstraction (105687states) and FLOYD_HOARE automaton (currently 13 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (19825 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 214.6s OverallTime, 13 OverallIterations, 19 TraceHistogramMax, 121.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11247 SDtfs, 32787 SDslu, 2516 SDs, 0 SdLazy, 83321 SolverSat, 18178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10053 GetRequests, 9972 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105687occurred in iteration=12, 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: 8.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 31300 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 38187 NumberOfCodeBlocks, 38187 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 38169 ConstructedInterpolants, 0 QuantifiedInterpolants, 219530021 SizeOfPredicates, 3 NumberOfNonLiveVariables, 11406 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 103037/103323 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown