java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 15:10:56,661 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 15:10:56,664 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 15:10:56,676 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 15:10:56,676 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 15:10:56,678 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 15:10:56,679 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 15:10:56,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 15:10:56,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 15:10:56,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 15:10:56,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 15:10:56,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 15:10:56,685 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 15:10:56,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 15:10:56,687 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 15:10:56,688 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 15:10:56,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 15:10:56,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 15:10:56,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 15:10:56,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 15:10:56,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 15:10:56,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 15:10:56,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 15:10:56,700 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 15:10:56,700 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 15:10:56,701 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 15:10:56,702 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 15:10:56,703 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 15:10:56,704 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 15:10:56,705 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 15:10:56,705 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 15:10:56,706 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 15:10:56,706 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 15:10:56,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 15:10:56,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 15:10:56,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 15:10:56,708 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 15:10:56,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 15:10:56,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 15:10:56,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 15:10:56,735 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 15:10:56,738 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 15:10:56,738 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 15:10:56,738 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 15:10:56,738 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 15:10:56,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 15:10:56,740 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 15:10:56,741 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 15:10:56,741 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 15:10:56,741 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 15:10:56,741 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 15:10:56,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 15:10:56,743 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 15:10:56,743 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 15:10:56,743 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 15:10:56,743 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 15:10:56,743 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 15:10:56,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 15:10:56,744 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 15:10:56,744 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 15:10:56,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 15:10:56,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 15:10:56,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 15:10:56,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 15:10:56,825 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 15:10:56,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label56_true-unreach-call.c [2018-10-24 15:10:56,885 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5302702c2/aa3542fa9cbb443bbc21dd01b0ce1a8c/FLAG65d9f62ab [2018-10-24 15:10:57,629 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 15:10:57,630 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label56_true-unreach-call.c [2018-10-24 15:10:57,668 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5302702c2/aa3542fa9cbb443bbc21dd01b0ce1a8c/FLAG65d9f62ab [2018-10-24 15:10:57,691 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5302702c2/aa3542fa9cbb443bbc21dd01b0ce1a8c [2018-10-24 15:10:57,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 15:10:57,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 15:10:57,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 15:10:57,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 15:10:57,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 15:10:57,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:10:57" (1/1) ... [2018-10-24 15:10:57,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c702569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:10:57, skipping insertion in model container [2018-10-24 15:10:57,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:10:57" (1/1) ... [2018-10-24 15:10:57,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 15:10:57,900 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 15:10:59,266 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:10:59,271 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 15:10:59,986 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 15:11:00,026 INFO L193 MainTranslator]: Completed translation [2018-10-24 15:11:00,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00 WrapperNode [2018-10-24 15:11:00,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 15:11:00,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 15:11:00,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 15:11:00,028 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 15:11:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 15:11:00,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 15:11:00,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 15:11:00,590 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 15:11:00,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... [2018-10-24 15:11:00,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 15:11:00,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 15:11:00,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 15:11:00,849 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 15:11:00,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 15:11:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 15:11:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 15:11:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 15:11:09,948 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 15:11:09,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:09 BoogieIcfgContainer [2018-10-24 15:11:09,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 15:11:09,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 15:11:09,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 15:11:09,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 15:11:09,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:10:57" (1/3) ... [2018-10-24 15:11:09,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ddac3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:09, skipping insertion in model container [2018-10-24 15:11:09,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:00" (2/3) ... [2018-10-24 15:11:09,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ddac3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:09, skipping insertion in model container [2018-10-24 15:11:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:09" (3/3) ... [2018-10-24 15:11:09,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label56_true-unreach-call.c [2018-10-24 15:11:09,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 15:11:09,977 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 15:11:09,995 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 15:11:10,038 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 15:11:10,039 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 15:11:10,039 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 15:11:10,039 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 15:11:10,039 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 15:11:10,039 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 15:11:10,039 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 15:11:10,039 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 15:11:10,039 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 15:11:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-24 15:11:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2018-10-24 15:11:10,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:11:10,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:11:10,134 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:11:10,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:11:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1143675181, now seen corresponding path program 1 times [2018-10-24 15:11:10,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:11:10,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:11:10,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:10,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:10,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:11,990 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 15:11:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:11:13,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:11:13,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:11:13,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:11:13,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:11:13,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:11:13,105 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 4 states. [2018-10-24 15:11:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:11:25,992 INFO L93 Difference]: Finished difference Result 3414 states and 6666 transitions. [2018-10-24 15:11:25,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:11:25,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 801 [2018-10-24 15:11:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:11:26,046 INFO L225 Difference]: With dead ends: 3414 [2018-10-24 15:11:26,046 INFO L226 Difference]: Without dead ends: 2521 [2018-10-24 15:11:26,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:11:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2018-10-24 15:11:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2018-10-24 15:11:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2018-10-24 15:11:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 4269 transitions. [2018-10-24 15:11:26,234 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 4269 transitions. Word has length 801 [2018-10-24 15:11:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:11:26,240 INFO L481 AbstractCegarLoop]: Abstraction has 2521 states and 4269 transitions. [2018-10-24 15:11:26,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:11:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 4269 transitions. [2018-10-24 15:11:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-10-24 15:11:26,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:11:26,326 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:11:26,326 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:11:26,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:11:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash 205045367, now seen corresponding path program 1 times [2018-10-24 15:11:26,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:11:26,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:11:26,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:26,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:26,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:11:27,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:11:27,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:11:27,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 15:11:27,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 15:11:27,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:11:27,400 INFO L87 Difference]: Start difference. First operand 2521 states and 4269 transitions. Second operand 5 states. [2018-10-24 15:11:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:11:36,899 INFO L93 Difference]: Finished difference Result 9954 states and 16948 transitions. [2018-10-24 15:11:36,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:11:36,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2018-10-24 15:11:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:11:36,936 INFO L225 Difference]: With dead ends: 9954 [2018-10-24 15:11:36,936 INFO L226 Difference]: Without dead ends: 7435 [2018-10-24 15:11:36,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:11:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2018-10-24 15:11:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7435. [2018-10-24 15:11:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2018-10-24 15:11:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11103 transitions. [2018-10-24 15:11:37,084 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11103 transitions. Word has length 809 [2018-10-24 15:11:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:11:37,084 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 11103 transitions. [2018-10-24 15:11:37,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 15:11:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11103 transitions. [2018-10-24 15:11:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2018-10-24 15:11:37,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:11:37,105 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:11:37,106 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:11:37,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:11:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1930952506, now seen corresponding path program 1 times [2018-10-24 15:11:37,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:11:37,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:11:37,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:37,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:37,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:37,700 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 15:11:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:11:37,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:11:37,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:11:37,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:11:37,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:11:37,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:11:37,928 INFO L87 Difference]: Start difference. First operand 7435 states and 11103 transitions. Second operand 4 states. [2018-10-24 15:11:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:11:45,906 INFO L93 Difference]: Finished difference Result 29610 states and 44284 transitions. [2018-10-24 15:11:45,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:11:45,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 815 [2018-10-24 15:11:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:11:45,980 INFO L225 Difference]: With dead ends: 29610 [2018-10-24 15:11:45,981 INFO L226 Difference]: Without dead ends: 22177 [2018-10-24 15:11:45,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:11:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2018-10-24 15:11:46,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22177. [2018-10-24 15:11:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2018-10-24 15:11:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 28776 transitions. [2018-10-24 15:11:46,379 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 28776 transitions. Word has length 815 [2018-10-24 15:11:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:11:46,379 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 28776 transitions. [2018-10-24 15:11:46,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:11:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 28776 transitions. [2018-10-24 15:11:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-10-24 15:11:46,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:11:46,427 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:11:46,427 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:11:46,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:11:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1440518763, now seen corresponding path program 1 times [2018-10-24 15:11:46,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:11:46,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:11:46,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:46,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:46,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 15:11:47,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:11:47,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 15:11:47,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:11:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:11:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:11:47,268 INFO L87 Difference]: Start difference. First operand 22177 states and 28776 transitions. Second operand 3 states. [2018-10-24 15:11:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:11:51,771 INFO L93 Difference]: Finished difference Result 46809 states and 61276 transitions. [2018-10-24 15:11:51,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:11:51,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 822 [2018-10-24 15:11:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:11:51,827 INFO L225 Difference]: With dead ends: 46809 [2018-10-24 15:11:51,828 INFO L226 Difference]: Without dead ends: 24634 [2018-10-24 15:11:51,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:11:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24634 states. [2018-10-24 15:11:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24634 to 24634. [2018-10-24 15:11:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24634 states. [2018-10-24 15:11:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24634 states to 24634 states and 31581 transitions. [2018-10-24 15:11:52,165 INFO L78 Accepts]: Start accepts. Automaton has 24634 states and 31581 transitions. Word has length 822 [2018-10-24 15:11:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:11:52,165 INFO L481 AbstractCegarLoop]: Abstraction has 24634 states and 31581 transitions. [2018-10-24 15:11:52,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:11:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24634 states and 31581 transitions. [2018-10-24 15:11:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2018-10-24 15:11:52,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:11:52,213 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:11:52,213 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:11:52,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:11:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1426372, now seen corresponding path program 1 times [2018-10-24 15:11:52,214 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:11:52,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:11:52,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:52,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:52,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:11:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 15:11:52,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:11:52,998 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 15:11:53,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:11:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:11:53,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:11:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 15:11:53,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:11:53,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 15:11:53,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 15:11:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 15:11:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:11:53,728 INFO L87 Difference]: Start difference. First operand 24634 states and 31581 transitions. Second operand 5 states. [2018-10-24 15:12:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:12:05,922 INFO L93 Difference]: Finished difference Result 112329 states and 145946 transitions. [2018-10-24 15:12:05,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 15:12:05,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 828 [2018-10-24 15:12:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:12:06,091 INFO L225 Difference]: With dead ends: 112329 [2018-10-24 15:12:06,091 INFO L226 Difference]: Without dead ends: 87697 [2018-10-24 15:12:06,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 827 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 15:12:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2018-10-24 15:12:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 87697. [2018-10-24 15:12:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87697 states. [2018-10-24 15:12:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87697 states to 87697 states and 104417 transitions. [2018-10-24 15:12:07,153 INFO L78 Accepts]: Start accepts. Automaton has 87697 states and 104417 transitions. Word has length 828 [2018-10-24 15:12:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:12:07,154 INFO L481 AbstractCegarLoop]: Abstraction has 87697 states and 104417 transitions. [2018-10-24 15:12:07,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 15:12:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 87697 states and 104417 transitions. [2018-10-24 15:12:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2018-10-24 15:12:07,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:12:07,230 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:12:07,230 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:12:07,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:12:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash -151347888, now seen corresponding path program 1 times [2018-10-24 15:12:07,231 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:12:07,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:12:07,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:07,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:07,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 15:12:08,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:12:08,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:12:08,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:12:08,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:12:08,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:08,501 INFO L87 Difference]: Start difference. First operand 87697 states and 104417 transitions. Second operand 4 states. [2018-10-24 15:12:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:12:16,145 INFO L93 Difference]: Finished difference Result 174573 states and 208001 transitions. [2018-10-24 15:12:16,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:12:16,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 908 [2018-10-24 15:12:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:12:16,297 INFO L225 Difference]: With dead ends: 174573 [2018-10-24 15:12:16,297 INFO L226 Difference]: Without dead ends: 87697 [2018-10-24 15:12:16,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2018-10-24 15:12:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 87697. [2018-10-24 15:12:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87697 states. [2018-10-24 15:12:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87697 states to 87697 states and 99576 transitions. [2018-10-24 15:12:17,785 INFO L78 Accepts]: Start accepts. Automaton has 87697 states and 99576 transitions. Word has length 908 [2018-10-24 15:12:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:12:17,785 INFO L481 AbstractCegarLoop]: Abstraction has 87697 states and 99576 transitions. [2018-10-24 15:12:17,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:12:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 87697 states and 99576 transitions. [2018-10-24 15:12:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2018-10-24 15:12:17,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:12:17,840 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, 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] [2018-10-24 15:12:17,840 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:12:17,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:12:17,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1807743694, now seen corresponding path program 1 times [2018-10-24 15:12:17,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:12:17,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:12:17,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:17,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:17,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 15:12:19,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:12:19,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:12:19,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:12:19,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:12:19,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:19,674 INFO L87 Difference]: Start difference. First operand 87697 states and 99576 transitions. Second operand 4 states. [2018-10-24 15:12:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:12:26,801 INFO L93 Difference]: Finished difference Result 174573 states and 198319 transitions. [2018-10-24 15:12:26,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:12:26,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 939 [2018-10-24 15:12:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:12:26,914 INFO L225 Difference]: With dead ends: 174573 [2018-10-24 15:12:26,914 INFO L226 Difference]: Without dead ends: 87697 [2018-10-24 15:12:26,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2018-10-24 15:12:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 86878. [2018-10-24 15:12:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86878 states. [2018-10-24 15:12:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86878 states to 86878 states and 93185 transitions. [2018-10-24 15:12:27,784 INFO L78 Accepts]: Start accepts. Automaton has 86878 states and 93185 transitions. Word has length 939 [2018-10-24 15:12:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:12:27,784 INFO L481 AbstractCegarLoop]: Abstraction has 86878 states and 93185 transitions. [2018-10-24 15:12:27,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:12:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 86878 states and 93185 transitions. [2018-10-24 15:12:27,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-10-24 15:12:27,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:12:27,849 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 15:12:27,849 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:12:27,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:12:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash -168234101, now seen corresponding path program 1 times [2018-10-24 15:12:27,850 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:12:27,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:12:27,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:27,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:27,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 15:12:29,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:12:29,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:12:29,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:12:29,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:12:29,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:29,424 INFO L87 Difference]: Start difference. First operand 86878 states and 93185 transitions. Second operand 4 states. [2018-10-24 15:12:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:12:36,542 INFO L93 Difference]: Finished difference Result 201608 states and 217572 transitions. [2018-10-24 15:12:36,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:12:36,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1058 [2018-10-24 15:12:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:12:36,653 INFO L225 Difference]: With dead ends: 201608 [2018-10-24 15:12:36,653 INFO L226 Difference]: Without dead ends: 115551 [2018-10-24 15:12:36,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:12:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115551 states. [2018-10-24 15:12:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115551 to 115551. [2018-10-24 15:12:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115551 states. [2018-10-24 15:12:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115551 states to 115551 states and 122759 transitions. [2018-10-24 15:12:38,169 INFO L78 Accepts]: Start accepts. Automaton has 115551 states and 122759 transitions. Word has length 1058 [2018-10-24 15:12:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:12:38,169 INFO L481 AbstractCegarLoop]: Abstraction has 115551 states and 122759 transitions. [2018-10-24 15:12:38,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:12:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 115551 states and 122759 transitions. [2018-10-24 15:12:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2018-10-24 15:12:38,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:12:38,236 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 15:12:38,236 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:12:38,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:12:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1663241338, now seen corresponding path program 1 times [2018-10-24 15:12:38,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:12:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:12:38,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:38,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:38,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-10-24 15:12:40,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:12:40,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 15:12:40,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 15:12:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 15:12:40,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:12:40,657 INFO L87 Difference]: Start difference. First operand 115551 states and 122759 transitions. Second operand 3 states. [2018-10-24 15:12:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:12:45,532 INFO L93 Difference]: Finished difference Result 278602 states and 295926 transitions. [2018-10-24 15:12:45,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 15:12:45,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1453 [2018-10-24 15:12:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:12:45,690 INFO L225 Difference]: With dead ends: 278602 [2018-10-24 15:12:45,690 INFO L226 Difference]: Without dead ends: 162232 [2018-10-24 15:12:45,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 15:12:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162232 states. [2018-10-24 15:12:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162232 to 159775. [2018-10-24 15:12:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159775 states. [2018-10-24 15:12:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159775 states to 159775 states and 166306 transitions. [2018-10-24 15:12:47,712 INFO L78 Accepts]: Start accepts. Automaton has 159775 states and 166306 transitions. Word has length 1453 [2018-10-24 15:12:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:12:47,713 INFO L481 AbstractCegarLoop]: Abstraction has 159775 states and 166306 transitions. [2018-10-24 15:12:47,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 15:12:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 159775 states and 166306 transitions. [2018-10-24 15:12:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1548 [2018-10-24 15:12:47,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:12:47,774 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:12:47,774 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:12:47,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:12:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 470288563, now seen corresponding path program 1 times [2018-10-24 15:12:47,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:12:47,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:12:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:47,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:12:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 1190 proven. 464 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-10-24 15:12:54,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:12:54,895 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 15:12:54,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:12:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:12:55,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 15:12:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 986 proven. 0 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-10-24 15:12:56,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:12:56,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-24 15:12:56,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 15:12:56,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 15:12:56,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-24 15:12:56,931 INFO L87 Difference]: Start difference. First operand 159775 states and 166306 transitions. Second operand 10 states. [2018-10-24 15:13:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:13:21,785 INFO L93 Difference]: Finished difference Result 314745 states and 327712 transitions. [2018-10-24 15:13:21,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 15:13:21,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1547 [2018-10-24 15:13:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:13:22,038 INFO L225 Difference]: With dead ends: 314745 [2018-10-24 15:13:22,038 INFO L226 Difference]: Without dead ends: 155791 [2018-10-24 15:13:22,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1552 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-24 15:13:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155791 states. [2018-10-24 15:13:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155791 to 152397. [2018-10-24 15:13:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152397 states. [2018-10-24 15:13:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152397 states to 152397 states and 156992 transitions. [2018-10-24 15:13:24,904 INFO L78 Accepts]: Start accepts. Automaton has 152397 states and 156992 transitions. Word has length 1547 [2018-10-24 15:13:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:13:24,905 INFO L481 AbstractCegarLoop]: Abstraction has 152397 states and 156992 transitions. [2018-10-24 15:13:24,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 15:13:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 152397 states and 156992 transitions. [2018-10-24 15:13:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2061 [2018-10-24 15:13:25,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:13:25,171 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2018-10-24 15:13:25,173 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:13:25,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:13:25,173 INFO L82 PathProgramCache]: Analyzing trace with hash 474507540, now seen corresponding path program 1 times [2018-10-24 15:13:25,174 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:13:25,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:13:25,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:13:25,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:13:25,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:13:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:13:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2018-10-24 15:13:31,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:13:31,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:13:31,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:13:31,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:13:31,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:13:31,720 INFO L87 Difference]: Start difference. First operand 152397 states and 156992 transitions. Second operand 4 states. [2018-10-24 15:13:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:13:37,883 INFO L93 Difference]: Finished difference Result 303154 states and 312320 transitions. [2018-10-24 15:13:37,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:13:37,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2060 [2018-10-24 15:13:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:13:38,036 INFO L225 Difference]: With dead ends: 303154 [2018-10-24 15:13:38,037 INFO L226 Difference]: Without dead ends: 126155 [2018-10-24 15:13:38,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:13:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126155 states. [2018-10-24 15:13:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126155 to 124517. [2018-10-24 15:13:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124517 states. [2018-10-24 15:13:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124517 states to 124517 states and 127565 transitions. [2018-10-24 15:13:39,620 INFO L78 Accepts]: Start accepts. Automaton has 124517 states and 127565 transitions. Word has length 2060 [2018-10-24 15:13:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:13:39,621 INFO L481 AbstractCegarLoop]: Abstraction has 124517 states and 127565 transitions. [2018-10-24 15:13:39,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:13:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 124517 states and 127565 transitions. [2018-10-24 15:13:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3144 [2018-10-24 15:13:39,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:13:39,750 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 15:13:39,750 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:13:39,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:13:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 430370128, now seen corresponding path program 1 times [2018-10-24 15:13:39,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:13:39,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:13:39,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:13:39,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:13:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:13:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:13:42,343 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-24 15:13:42,688 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-10-24 15:13:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 2343 proven. 0 refuted. 0 times theorem prover too weak. 3176 trivial. 0 not checked. [2018-10-24 15:13:49,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:13:49,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 15:13:49,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 15:13:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 15:13:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 15:13:49,224 INFO L87 Difference]: Start difference. First operand 124517 states and 127565 transitions. Second operand 6 states. [2018-10-24 15:13:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:13:58,697 INFO L93 Difference]: Finished difference Result 252308 states and 258440 transitions. [2018-10-24 15:13:58,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 15:13:58,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3143 [2018-10-24 15:13:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:13:58,805 INFO L225 Difference]: With dead ends: 252308 [2018-10-24 15:13:58,805 INFO L226 Difference]: Without dead ends: 122052 [2018-10-24 15:13:58,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 15:13:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122052 states. [2018-10-24 15:13:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122052 to 119595. [2018-10-24 15:13:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119595 states. [2018-10-24 15:13:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119595 states to 119595 states and 120491 transitions. [2018-10-24 15:13:59,860 INFO L78 Accepts]: Start accepts. Automaton has 119595 states and 120491 transitions. Word has length 3143 [2018-10-24 15:13:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:13:59,861 INFO L481 AbstractCegarLoop]: Abstraction has 119595 states and 120491 transitions. [2018-10-24 15:13:59,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 15:13:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 119595 states and 120491 transitions. [2018-10-24 15:13:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3550 [2018-10-24 15:13:59,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:13:59,986 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:13:59,987 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:13:59,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:13:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash 415671758, now seen corresponding path program 1 times [2018-10-24 15:13:59,988 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:13:59,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:13:59,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:13:59,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:13:59,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:14:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:14:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8852 backedges. 2229 proven. 0 refuted. 0 times theorem prover too weak. 6623 trivial. 0 not checked. [2018-10-24 15:14:06,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:14:06,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:14:06,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:14:06,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:14:06,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:14:06,515 INFO L87 Difference]: Start difference. First operand 119595 states and 120491 transitions. Second operand 4 states. [2018-10-24 15:14:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:14:11,670 INFO L93 Difference]: Finished difference Result 243283 states and 245107 transitions. [2018-10-24 15:14:11,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:14:11,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3549 [2018-10-24 15:14:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:14:11,768 INFO L225 Difference]: With dead ends: 243283 [2018-10-24 15:14:11,768 INFO L226 Difference]: Without dead ends: 124509 [2018-10-24 15:14:11,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:14:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124509 states. [2018-10-24 15:14:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124509 to 122052. [2018-10-24 15:14:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122052 states. [2018-10-24 15:14:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122052 states to 122052 states and 122913 transitions. [2018-10-24 15:14:12,799 INFO L78 Accepts]: Start accepts. Automaton has 122052 states and 122913 transitions. Word has length 3549 [2018-10-24 15:14:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:14:12,800 INFO L481 AbstractCegarLoop]: Abstraction has 122052 states and 122913 transitions. [2018-10-24 15:14:12,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:14:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 122052 states and 122913 transitions. [2018-10-24 15:14:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3617 [2018-10-24 15:14:12,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:14:12,933 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:14:12,933 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:14:12,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:14:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1377615173, now seen corresponding path program 1 times [2018-10-24 15:14:12,935 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:14:12,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:14:12,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:14:12,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:14:12,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:14:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:14:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9323 backedges. 4088 proven. 0 refuted. 0 times theorem prover too weak. 5235 trivial. 0 not checked. [2018-10-24 15:14:18,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 15:14:18,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 15:14:18,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 15:14:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 15:14:18,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:14:18,845 INFO L87 Difference]: Start difference. First operand 122052 states and 122913 transitions. Second operand 4 states. [2018-10-24 15:14:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 15:14:23,749 INFO L93 Difference]: Finished difference Result 243283 states and 245000 transitions. [2018-10-24 15:14:23,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 15:14:23,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3616 [2018-10-24 15:14:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 15:14:23,861 INFO L225 Difference]: With dead ends: 243283 [2018-10-24 15:14:23,862 INFO L226 Difference]: Without dead ends: 122052 [2018-10-24 15:14:23,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 15:14:23,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122052 states. [2018-10-24 15:14:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122052 to 121233. [2018-10-24 15:14:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121233 states. [2018-10-24 15:14:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121233 states to 121233 states and 122000 transitions. [2018-10-24 15:14:24,924 INFO L78 Accepts]: Start accepts. Automaton has 121233 states and 122000 transitions. Word has length 3616 [2018-10-24 15:14:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 15:14:24,925 INFO L481 AbstractCegarLoop]: Abstraction has 121233 states and 122000 transitions. [2018-10-24 15:14:24,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 15:14:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 121233 states and 122000 transitions. [2018-10-24 15:14:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3728 [2018-10-24 15:14:25,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 15:14:25,058 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 15:14:25,058 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 15:14:25,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 15:14:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1742947259, now seen corresponding path program 1 times [2018-10-24 15:14:25,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 15:14:25,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 15:14:25,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:14:25,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:14:25,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 15:14:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:14:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10391 backedges. 4812 proven. 5 refuted. 0 times theorem prover too weak. 5574 trivial. 0 not checked. [2018-10-24 15:14:31,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 15:14:31,418 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 15:14:31,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 15:14:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 15:14:32,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 15:14:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10391 backedges. 4095 proven. 0 refuted. 0 times theorem prover too weak. 6296 trivial. 0 not checked. [2018-10-24 15:14:40,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 15:14:40,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 15:14:40,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 15:14:40,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 15:14:40,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 15:14:40,035 INFO L87 Difference]: Start difference. First operand 121233 states and 122000 transitions. Second operand 5 states. [2018-10-24 15:14:40,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 15:14:40,036 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 15:14:40,042 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 15:14:40,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:14:40 BoogieIcfgContainer [2018-10-24 15:14:40,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 15:14:40,043 INFO L168 Benchmark]: Toolchain (without parser) took 222338.80 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -32.9 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,044 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. [2018-10-24 15:14:40,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2320.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 561.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,046 INFO L168 Benchmark]: Boogie Preprocessor took 259.06 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: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,047 INFO L168 Benchmark]: RCFGBuilder took 9100.24 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -172.2 MB). Peak memory consumption was 679.0 MB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,048 INFO L168 Benchmark]: TraceAbstraction took 210092.26 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 930.1 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-10-24 15:14:40,056 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 2320.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 561.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.06 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: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9100.24 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -172.2 MB). Peak memory consumption was 679.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210092.26 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 930.1 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4757]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4757). Cancelled while BasicCegarLoop was constructing difference of abstraction (121233states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 15 OverallIterations, 13 TraceHistogramMax, 126.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11112 SDtfs, 29646 SDslu, 1342 SDs, 0 SdLazy, 82252 SolverSat, 18006 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6179 GetRequests, 6125 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159775occurred in iteration=9, 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: 14.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 14041 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 32177 NumberOfCodeBlocks, 32177 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 32159 ConstructedInterpolants, 0 QuantifiedInterpolants, 159268942 SizeOfPredicates, 2 NumberOfNonLiveVariables, 7036 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 52878/53351 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown