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/Problem03_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:04:54,385 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:04:54,387 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:04:54,403 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:04:54,403 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:04:54,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:04:54,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:04:54,408 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:04:54,411 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:04:54,418 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:04:54,419 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:04:54,419 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:04:54,420 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:04:54,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:04:54,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:04:54,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:04:54,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:04:54,426 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:04:54,428 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:04:54,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:04:54,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:04:54,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:04:54,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:04:54,433 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:04:54,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:04:54,434 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:04:54,435 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:04:54,436 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:04:54,437 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:04:54,438 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:04:54,438 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:04:54,439 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:04:54,439 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:04:54,439 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:04:54,440 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:04:54,441 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:04:54,441 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 [2018-10-26 20:04:54,456 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:04:54,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:04:54,457 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:04:54,457 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:04:54,458 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:04:54,458 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:04:54,458 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:04:54,458 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:04:54,459 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:04:54,459 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:04:54,459 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:04:54,459 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:04:54,459 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:04:54,460 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:04:54,460 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:04:54,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:04:54,460 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:04:54,460 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:04:54,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:04:54,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:04:54,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:04:54,461 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:04:54,461 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:04:54,462 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:04:54,462 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:04:54,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:04:54,462 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:04:54,462 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 20:04:54,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:04:54,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:04:54,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:04:54,541 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:04:54,541 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:04:54,542 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-10-26 20:04:54,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a47c38e62/ef70b45ab0954365873b1cd3c085c026/FLAG34dab59f5 [2018-10-26 20:04:55,259 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:04:55,260 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label46_true-unreach-call.c [2018-10-26 20:04:55,278 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a47c38e62/ef70b45ab0954365873b1cd3c085c026/FLAG34dab59f5 [2018-10-26 20:04:55,294 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a47c38e62/ef70b45ab0954365873b1cd3c085c026 [2018-10-26 20:04:55,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:04:55,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:04:55,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:04:55,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:04:55,313 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:04:55,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:04:55" (1/1) ... [2018-10-26 20:04:55,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4115c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:55, skipping insertion in model container [2018-10-26 20:04:55,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:04:55" (1/1) ... [2018-10-26 20:04:55,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:04:55,425 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:04:56,203 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:04:56,211 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:04:56,528 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:04:56,555 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:04:56,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56 WrapperNode [2018-10-26 20:04:56,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:04:56,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:04:56,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:04:56,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:04:56,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:04:56,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:04:56,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:04:56,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:04:56,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:56,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:57,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (1/1) ... [2018-10-26 20:04:57,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:04:57,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:04:57,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:04:57,019 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:04:57,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (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 [2018-10-26 20:04:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 20:04:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:04:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:05:02,814 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:05:02,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:05:02 BoogieIcfgContainer [2018-10-26 20:05:02,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:05:02,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:05:02,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:05:02,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:05:02,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:04:55" (1/3) ... [2018-10-26 20:05:02,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5694e9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:05:02, skipping insertion in model container [2018-10-26 20:05:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:04:56" (2/3) ... [2018-10-26 20:05:02,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5694e9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:05:02, skipping insertion in model container [2018-10-26 20:05:02,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:05:02" (3/3) ... [2018-10-26 20:05:02,824 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label46_true-unreach-call.c [2018-10-26 20:05:02,834 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:05:02,844 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:05:02,862 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:05:02,899 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:05:02,900 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:05:02,900 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:05:02,901 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:05:02,901 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:05:02,901 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:05:02,901 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:05:02,901 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:05:02,901 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:05:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-10-26 20:05:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-26 20:05:02,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:02,951 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] [2018-10-26 20:05:02,953 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:02,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:02,959 INFO L82 PathProgramCache]: Analyzing trace with hash -953673444, now seen corresponding path program 1 times [2018-10-26 20:05:02,961 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:02,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:03,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:03,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:03,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:03,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:03,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:03,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:03,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:03,977 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-10-26 20:05:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:07,444 INFO L93 Difference]: Finished difference Result 1072 states and 1917 transitions. [2018-10-26 20:05:07,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:07,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2018-10-26 20:05:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:07,474 INFO L225 Difference]: With dead ends: 1072 [2018-10-26 20:05:07,475 INFO L226 Difference]: Without dead ends: 762 [2018-10-26 20:05:07,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-10-26 20:05:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 518. [2018-10-26 20:05:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2018-10-26 20:05:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 855 transitions. [2018-10-26 20:05:07,566 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 855 transitions. Word has length 186 [2018-10-26 20:05:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:07,568 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 855 transitions. [2018-10-26 20:05:07,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 855 transitions. [2018-10-26 20:05:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-26 20:05:07,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:07,585 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:05:07,585 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:07,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash 675054029, now seen corresponding path program 1 times [2018-10-26 20:05:07,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:07,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:07,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:07,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:07,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:07,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:07,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:07,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:07,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:07,888 INFO L87 Difference]: Start difference. First operand 518 states and 855 transitions. Second operand 4 states. [2018-10-26 20:05:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:11,062 INFO L93 Difference]: Finished difference Result 1918 states and 3253 transitions. [2018-10-26 20:05:11,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:11,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-10-26 20:05:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:11,071 INFO L225 Difference]: With dead ends: 1918 [2018-10-26 20:05:11,071 INFO L226 Difference]: Without dead ends: 1402 [2018-10-26 20:05:11,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2018-10-26 20:05:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 933. [2018-10-26 20:05:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2018-10-26 20:05:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1472 transitions. [2018-10-26 20:05:11,124 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1472 transitions. Word has length 192 [2018-10-26 20:05:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:11,124 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1472 transitions. [2018-10-26 20:05:11,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1472 transitions. [2018-10-26 20:05:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-26 20:05:11,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:11,129 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:11,129 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:11,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:11,130 INFO L82 PathProgramCache]: Analyzing trace with hash 598448987, now seen corresponding path program 1 times [2018-10-26 20:05:11,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:11,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:11,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:11,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:11,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:11,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:11,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:05:11,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:11,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:11,237 INFO L87 Difference]: Start difference. First operand 933 states and 1472 transitions. Second operand 3 states. [2018-10-26 20:05:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:16,629 INFO L93 Difference]: Finished difference Result 2699 states and 4315 transitions. [2018-10-26 20:05:16,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:16,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-10-26 20:05:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:16,643 INFO L225 Difference]: With dead ends: 2699 [2018-10-26 20:05:16,643 INFO L226 Difference]: Without dead ends: 1768 [2018-10-26 20:05:16,645 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 [2018-10-26 20:05:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-10-26 20:05:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1751. [2018-10-26 20:05:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-10-26 20:05:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2699 transitions. [2018-10-26 20:05:16,709 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2699 transitions. Word has length 195 [2018-10-26 20:05:16,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:16,710 INFO L481 AbstractCegarLoop]: Abstraction has 1751 states and 2699 transitions. [2018-10-26 20:05:16,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2699 transitions. [2018-10-26 20:05:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-26 20:05:16,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:16,719 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:05:16,720 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:16,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:16,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1492809433, now seen corresponding path program 1 times [2018-10-26 20:05:16,720 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:16,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:16,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:16,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:16,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 20:05:16,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:16,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:05:16,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:16,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:16,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:16,940 INFO L87 Difference]: Start difference. First operand 1751 states and 2699 transitions. Second operand 3 states. [2018-10-26 20:05:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:20,908 INFO L93 Difference]: Finished difference Result 4329 states and 6639 transitions. [2018-10-26 20:05:20,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:20,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-26 20:05:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:20,923 INFO L225 Difference]: With dead ends: 4329 [2018-10-26 20:05:20,923 INFO L226 Difference]: Without dead ends: 2580 [2018-10-26 20:05:20,926 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 [2018-10-26 20:05:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2018-10-26 20:05:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2579. [2018-10-26 20:05:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2018-10-26 20:05:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3884 transitions. [2018-10-26 20:05:20,977 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3884 transitions. Word has length 203 [2018-10-26 20:05:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:20,978 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 3884 transitions. [2018-10-26 20:05:20,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3884 transitions. [2018-10-26 20:05:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-26 20:05:20,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:20,986 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:20,986 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:20,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -105176928, now seen corresponding path program 1 times [2018-10-26 20:05:20,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:20,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:20,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:20,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:20,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 20:05:21,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:21,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:05:21,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:21,147 INFO L87 Difference]: Start difference. First operand 2579 states and 3884 transitions. Second operand 3 states. [2018-10-26 20:05:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:22,618 INFO L93 Difference]: Finished difference Result 7713 states and 11623 transitions. [2018-10-26 20:05:22,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:22,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-10-26 20:05:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:22,643 INFO L225 Difference]: With dead ends: 7713 [2018-10-26 20:05:22,643 INFO L226 Difference]: Without dead ends: 5136 [2018-10-26 20:05:22,648 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 [2018-10-26 20:05:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2018-10-26 20:05:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 5133. [2018-10-26 20:05:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5133 states. [2018-10-26 20:05:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 7720 transitions. [2018-10-26 20:05:22,749 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 7720 transitions. Word has length 209 [2018-10-26 20:05:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:22,750 INFO L481 AbstractCegarLoop]: Abstraction has 5133 states and 7720 transitions. [2018-10-26 20:05:22,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 7720 transitions. [2018-10-26 20:05:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-26 20:05:22,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:22,761 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:22,761 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:22,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:22,762 INFO L82 PathProgramCache]: Analyzing trace with hash 37695417, now seen corresponding path program 1 times [2018-10-26 20:05:22,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:22,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:22,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:22,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:22,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:23,063 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 20:05:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 20:05:23,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:05:23,102 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 [2018-10-26 20:05:23,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:23,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:05:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-26 20:05:23,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 20:05:23,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2018-10-26 20:05:23,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:23,350 INFO L87 Difference]: Start difference. First operand 5133 states and 7720 transitions. Second operand 4 states. [2018-10-26 20:05:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:26,970 INFO L93 Difference]: Finished difference Result 20487 states and 30826 transitions. [2018-10-26 20:05:26,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:26,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2018-10-26 20:05:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:27,040 INFO L225 Difference]: With dead ends: 20487 [2018-10-26 20:05:27,041 INFO L226 Difference]: Without dead ends: 15356 [2018-10-26 20:05:27,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15356 states. [2018-10-26 20:05:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15356 to 10229. [2018-10-26 20:05:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2018-10-26 20:05:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 15363 transitions. [2018-10-26 20:05:27,286 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 15363 transitions. Word has length 218 [2018-10-26 20:05:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:27,286 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 15363 transitions. [2018-10-26 20:05:27,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 15363 transitions. [2018-10-26 20:05:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-26 20:05:27,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:27,306 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:05:27,306 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:27,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:27,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1623450648, now seen corresponding path program 1 times [2018-10-26 20:05:27,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:27,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:27,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:27,860 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 20:05:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:27,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:27,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:05:27,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:05:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:05:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:05:27,919 INFO L87 Difference]: Start difference. First operand 10229 states and 15363 transitions. Second operand 5 states. [2018-10-26 20:05:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:32,632 INFO L93 Difference]: Finished difference Result 23029 states and 35010 transitions. [2018-10-26 20:05:32,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 20:05:32,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-10-26 20:05:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:32,667 INFO L225 Difference]: With dead ends: 23029 [2018-10-26 20:05:32,668 INFO L226 Difference]: Without dead ends: 12802 [2018-10-26 20:05:32,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:05:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12802 states. [2018-10-26 20:05:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12802 to 11045. [2018-10-26 20:05:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11045 states. [2018-10-26 20:05:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11045 states to 11045 states and 16559 transitions. [2018-10-26 20:05:32,858 INFO L78 Accepts]: Start accepts. Automaton has 11045 states and 16559 transitions. Word has length 226 [2018-10-26 20:05:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:32,858 INFO L481 AbstractCegarLoop]: Abstraction has 11045 states and 16559 transitions. [2018-10-26 20:05:32,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:05:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11045 states and 16559 transitions. [2018-10-26 20:05:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-26 20:05:32,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:32,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:32,878 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:32,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:32,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1399517080, now seen corresponding path program 1 times [2018-10-26 20:05:32,879 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:32,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:32,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:32,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:32,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 20:05:33,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:33,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:33,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:33,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:33,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:33,146 INFO L87 Difference]: Start difference. First operand 11045 states and 16559 transitions. Second operand 4 states. [2018-10-26 20:05:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:35,320 INFO L93 Difference]: Finished difference Result 41022 states and 61357 transitions. [2018-10-26 20:05:35,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:35,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-26 20:05:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:35,377 INFO L225 Difference]: With dead ends: 41022 [2018-10-26 20:05:35,377 INFO L226 Difference]: Without dead ends: 29979 [2018-10-26 20:05:35,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29979 states. [2018-10-26 20:05:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29979 to 20440. [2018-10-26 20:05:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20440 states. [2018-10-26 20:05:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20440 states to 20440 states and 29051 transitions. [2018-10-26 20:05:35,726 INFO L78 Accepts]: Start accepts. Automaton has 20440 states and 29051 transitions. Word has length 226 [2018-10-26 20:05:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:35,726 INFO L481 AbstractCegarLoop]: Abstraction has 20440 states and 29051 transitions. [2018-10-26 20:05:35,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20440 states and 29051 transitions. [2018-10-26 20:05:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-26 20:05:35,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:35,752 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-26 20:05:35,752 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:35,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:35,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1231663853, now seen corresponding path program 1 times [2018-10-26 20:05:35,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:35,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:35,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:35,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:35,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 20:05:35,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:35,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:35,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:35,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:35,907 INFO L87 Difference]: Start difference. First operand 20440 states and 29051 transitions. Second operand 3 states. [2018-10-26 20:05:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:37,489 INFO L93 Difference]: Finished difference Result 40906 states and 58154 transitions. [2018-10-26 20:05:37,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:37,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-10-26 20:05:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:37,525 INFO L225 Difference]: With dead ends: 40906 [2018-10-26 20:05:37,525 INFO L226 Difference]: Without dead ends: 20468 [2018-10-26 20:05:37,546 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 [2018-10-26 20:05:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2018-10-26 20:05:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20440. [2018-10-26 20:05:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20440 states. [2018-10-26 20:05:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20440 states to 20440 states and 27343 transitions. [2018-10-26 20:05:37,796 INFO L78 Accepts]: Start accepts. Automaton has 20440 states and 27343 transitions. Word has length 227 [2018-10-26 20:05:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 20440 states and 27343 transitions. [2018-10-26 20:05:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 20440 states and 27343 transitions. [2018-10-26 20:05:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-26 20:05:37,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:37,822 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 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] [2018-10-26 20:05:37,822 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:37,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash -12127013, now seen corresponding path program 1 times [2018-10-26 20:05:37,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:37,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:37,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:37,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:37,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-26 20:05:37,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:37,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:37,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:37,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:37,964 INFO L87 Difference]: Start difference. First operand 20440 states and 27343 transitions. Second operand 3 states. [2018-10-26 20:05:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:39,504 INFO L93 Difference]: Finished difference Result 57404 states and 76442 transitions. [2018-10-26 20:05:39,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:39,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-10-26 20:05:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:39,562 INFO L225 Difference]: With dead ends: 57404 [2018-10-26 20:05:39,562 INFO L226 Difference]: Without dead ends: 36966 [2018-10-26 20:05:39,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36966 states. [2018-10-26 20:05:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36966 to 36958. [2018-10-26 20:05:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36958 states. [2018-10-26 20:05:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36958 states to 36958 states and 44611 transitions. [2018-10-26 20:05:40,033 INFO L78 Accepts]: Start accepts. Automaton has 36958 states and 44611 transitions. Word has length 234 [2018-10-26 20:05:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:40,033 INFO L481 AbstractCegarLoop]: Abstraction has 36958 states and 44611 transitions. [2018-10-26 20:05:40,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 36958 states and 44611 transitions. [2018-10-26 20:05:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-26 20:05:40,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:40,065 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 20:05:40,065 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:40,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:40,066 INFO L82 PathProgramCache]: Analyzing trace with hash 870198402, now seen corresponding path program 1 times [2018-10-26 20:05:40,066 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:40,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:40,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:40,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:40,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:40,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:40,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:40,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:40,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:40,358 INFO L87 Difference]: Start difference. First operand 36958 states and 44611 transitions. Second operand 4 states. [2018-10-26 20:05:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:42,689 INFO L93 Difference]: Finished difference Result 87182 states and 106671 transitions. [2018-10-26 20:05:42,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:42,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-26 20:05:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:42,742 INFO L225 Difference]: With dead ends: 87182 [2018-10-26 20:05:42,743 INFO L226 Difference]: Without dead ends: 50226 [2018-10-26 20:05:42,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50226 states. [2018-10-26 20:05:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50226 to 50218. [2018-10-26 20:05:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50218 states. [2018-10-26 20:05:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50218 states to 50218 states and 59044 transitions. [2018-10-26 20:05:43,401 INFO L78 Accepts]: Start accepts. Automaton has 50218 states and 59044 transitions. Word has length 242 [2018-10-26 20:05:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:43,401 INFO L481 AbstractCegarLoop]: Abstraction has 50218 states and 59044 transitions. [2018-10-26 20:05:43,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 50218 states and 59044 transitions. [2018-10-26 20:05:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-26 20:05:43,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:43,428 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:43,428 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:43,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:43,429 INFO L82 PathProgramCache]: Analyzing trace with hash -46748163, now seen corresponding path program 1 times [2018-10-26 20:05:43,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:43,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:43,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-26 20:05:43,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:43,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:05:43,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:43,669 INFO L87 Difference]: Start difference. First operand 50218 states and 59044 transitions. Second operand 3 states. [2018-10-26 20:05:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:44,721 INFO L93 Difference]: Finished difference Result 99538 states and 116952 transitions. [2018-10-26 20:05:44,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:44,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2018-10-26 20:05:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:44,776 INFO L225 Difference]: With dead ends: 99538 [2018-10-26 20:05:44,776 INFO L226 Difference]: Without dead ends: 49322 [2018-10-26 20:05:44,805 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 [2018-10-26 20:05:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49322 states. [2018-10-26 20:05:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49322 to 49322. [2018-10-26 20:05:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49322 states. [2018-10-26 20:05:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49322 states to 49322 states and 57402 transitions. [2018-10-26 20:05:45,757 INFO L78 Accepts]: Start accepts. Automaton has 49322 states and 57402 transitions. Word has length 276 [2018-10-26 20:05:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:45,758 INFO L481 AbstractCegarLoop]: Abstraction has 49322 states and 57402 transitions. [2018-10-26 20:05:45,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 49322 states and 57402 transitions. [2018-10-26 20:05:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-26 20:05:45,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:45,777 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 20:05:45,778 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:45,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:45,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2654650, now seen corresponding path program 1 times [2018-10-26 20:05:45,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:45,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:45,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:45,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:45,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 20:05:46,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:46,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:05:46,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:05:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:05:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:46,034 INFO L87 Difference]: Start difference. First operand 49322 states and 57402 transitions. Second operand 4 states. [2018-10-26 20:05:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:48,493 INFO L93 Difference]: Finished difference Result 160811 states and 185593 transitions. [2018-10-26 20:05:48,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:05:48,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-10-26 20:05:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:48,615 INFO L225 Difference]: With dead ends: 160811 [2018-10-26 20:05:48,615 INFO L226 Difference]: Without dead ends: 111491 [2018-10-26 20:05:48,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:05:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111491 states. [2018-10-26 20:05:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111491 to 82368. [2018-10-26 20:05:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82368 states. [2018-10-26 20:05:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82368 states to 82368 states and 94327 transitions. [2018-10-26 20:05:49,654 INFO L78 Accepts]: Start accepts. Automaton has 82368 states and 94327 transitions. Word has length 286 [2018-10-26 20:05:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:49,654 INFO L481 AbstractCegarLoop]: Abstraction has 82368 states and 94327 transitions. [2018-10-26 20:05:49,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:05:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 82368 states and 94327 transitions. [2018-10-26 20:05:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-26 20:05:49,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:49,692 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:49,692 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:49,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:49,693 INFO L82 PathProgramCache]: Analyzing trace with hash 441793273, now seen corresponding path program 1 times [2018-10-26 20:05:49,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:49,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:49,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:49,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:49,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-26 20:05:50,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:05:50,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:05:50,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:05:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:05:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:05:50,481 INFO L87 Difference]: Start difference. First operand 82368 states and 94327 transitions. Second operand 3 states. [2018-10-26 20:05:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:51,899 INFO L93 Difference]: Finished difference Result 164726 states and 188644 transitions. [2018-10-26 20:05:51,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:05:51,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2018-10-26 20:05:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:05:51,983 INFO L225 Difference]: With dead ends: 164726 [2018-10-26 20:05:51,983 INFO L226 Difference]: Without dead ends: 82360 [2018-10-26 20:05:52,025 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 [2018-10-26 20:05:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82360 states. [2018-10-26 20:05:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82360 to 82360. [2018-10-26 20:05:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82360 states. [2018-10-26 20:05:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82360 states to 82360 states and 94311 transitions. [2018-10-26 20:05:52,830 INFO L78 Accepts]: Start accepts. Automaton has 82360 states and 94311 transitions. Word has length 314 [2018-10-26 20:05:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:05:52,831 INFO L481 AbstractCegarLoop]: Abstraction has 82360 states and 94311 transitions. [2018-10-26 20:05:52,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:05:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 82360 states and 94311 transitions. [2018-10-26 20:05:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-26 20:05:52,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:05:52,854 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:05:52,854 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:05:52,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:05:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash 547264015, now seen corresponding path program 1 times [2018-10-26 20:05:52,855 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:05:52,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:05:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:52,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:05:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:53,171 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 20:05:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 106 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-26 20:05:53,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:05:53,373 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 [2018-10-26 20:05:53,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:05:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:05:53,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:05:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 20:05:53,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 20:05:53,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 20:05:53,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 20:05:53,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 20:05:53,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 20:05:53,759 INFO L87 Difference]: Start difference. First operand 82360 states and 94311 transitions. Second operand 6 states. [2018-10-26 20:05:54,435 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 20:05:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:05:59,904 INFO L93 Difference]: Finished difference Result 242791 states and 278238 transitions. [2018-10-26 20:05:59,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:05:59,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 321 [2018-10-26 20:05:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:00,071 INFO L225 Difference]: With dead ends: 242791 [2018-10-26 20:06:00,071 INFO L226 Difference]: Without dead ends: 160433 [2018-10-26 20:06:00,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:06:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160433 states. [2018-10-26 20:06:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160433 to 159142. [2018-10-26 20:06:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159142 states. [2018-10-26 20:06:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159142 states to 159142 states and 177838 transitions. [2018-10-26 20:06:02,947 INFO L78 Accepts]: Start accepts. Automaton has 159142 states and 177838 transitions. Word has length 321 [2018-10-26 20:06:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:02,947 INFO L481 AbstractCegarLoop]: Abstraction has 159142 states and 177838 transitions. [2018-10-26 20:06:02,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 20:06:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 159142 states and 177838 transitions. [2018-10-26 20:06:02,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-26 20:06:02,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:02,981 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:06:02,981 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:02,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1724319799, now seen corresponding path program 1 times [2018-10-26 20:06:02,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:06:02,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:06:02,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:02,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:02,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:03,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:03,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:06:03,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:06:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:06:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:06:03,416 INFO L87 Difference]: Start difference. First operand 159142 states and 177838 transitions. Second operand 3 states. [2018-10-26 20:06:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:05,638 INFO L93 Difference]: Finished difference Result 326900 states and 365941 transitions. [2018-10-26 20:06:05,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:06:05,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2018-10-26 20:06:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:05,830 INFO L225 Difference]: With dead ends: 326900 [2018-10-26 20:06:05,830 INFO L226 Difference]: Without dead ends: 167760 [2018-10-26 20:06:05,915 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 [2018-10-26 20:06:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167760 states. [2018-10-26 20:06:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167760 to 167757. [2018-10-26 20:06:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167757 states. [2018-10-26 20:06:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167757 states to 167757 states and 186187 transitions. [2018-10-26 20:06:09,017 INFO L78 Accepts]: Start accepts. Automaton has 167757 states and 186187 transitions. Word has length 339 [2018-10-26 20:06:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:09,017 INFO L481 AbstractCegarLoop]: Abstraction has 167757 states and 186187 transitions. [2018-10-26 20:06:09,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:06:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 167757 states and 186187 transitions. [2018-10-26 20:06:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-26 20:06:09,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:09,047 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 20:06:09,047 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:09,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash 172071673, now seen corresponding path program 1 times [2018-10-26 20:06:09,047 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:06:09,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:06:09,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:09,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:09,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-26 20:06:09,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:09,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:06:09,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:06:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:06:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:06:09,304 INFO L87 Difference]: Start difference. First operand 167757 states and 186187 transitions. Second operand 4 states. [2018-10-26 20:06:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:12,133 INFO L93 Difference]: Finished difference Result 346806 states and 385535 transitions. [2018-10-26 20:06:12,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:06:12,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 346 [2018-10-26 20:06:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:12,345 INFO L225 Difference]: With dead ends: 346806 [2018-10-26 20:06:12,346 INFO L226 Difference]: Without dead ends: 179051 [2018-10-26 20:06:12,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:06:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179051 states. [2018-10-26 20:06:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179051 to 179010. [2018-10-26 20:06:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179010 states. [2018-10-26 20:06:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179010 states to 179010 states and 198488 transitions. [2018-10-26 20:06:15,129 INFO L78 Accepts]: Start accepts. Automaton has 179010 states and 198488 transitions. Word has length 346 [2018-10-26 20:06:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:15,129 INFO L481 AbstractCegarLoop]: Abstraction has 179010 states and 198488 transitions. [2018-10-26 20:06:15,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:06:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 179010 states and 198488 transitions. [2018-10-26 20:06:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-26 20:06:15,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:15,160 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 20:06:15,160 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:15,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1694356248, now seen corresponding path program 1 times [2018-10-26 20:06:15,160 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:06:15,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:06:15,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:15,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:15,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-26 20:06:15,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:06:15,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:06:15,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:06:15,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:06:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:06:15,618 INFO L87 Difference]: Start difference. First operand 179010 states and 198488 transitions. Second operand 4 states. [2018-10-26 20:06:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:18,956 INFO L93 Difference]: Finished difference Result 656676 states and 727540 transitions. [2018-10-26 20:06:18,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:06:18,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2018-10-26 20:06:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:19,554 INFO L225 Difference]: With dead ends: 656676 [2018-10-26 20:06:19,555 INFO L226 Difference]: Without dead ends: 477668 [2018-10-26 20:06:19,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:06:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477668 states. [2018-10-26 20:06:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477668 to 306447. [2018-10-26 20:06:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306447 states. [2018-10-26 20:06:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306447 states to 306447 states and 339139 transitions. [2018-10-26 20:06:30,300 INFO L78 Accepts]: Start accepts. Automaton has 306447 states and 339139 transitions. Word has length 374 [2018-10-26 20:06:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:30,300 INFO L481 AbstractCegarLoop]: Abstraction has 306447 states and 339139 transitions. [2018-10-26 20:06:30,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:06:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 306447 states and 339139 transitions. [2018-10-26 20:06:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-26 20:06:30,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:06:30,335 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 20:06:30,336 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:06:30,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:06:30,336 INFO L82 PathProgramCache]: Analyzing trace with hash 927021162, now seen corresponding path program 1 times [2018-10-26 20:06:30,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:06:30,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:06:30,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:30,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:30,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:06:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:30,755 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 20:06:31,027 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-26 20:06:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 192 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:06:31,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:06:31,696 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 [2018-10-26 20:06:31,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:06:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:06:31,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:06:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-26 20:06:32,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 20:06:32,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-26 20:06:32,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:06:32,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:06:32,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:06:32,035 INFO L87 Difference]: Start difference. First operand 306447 states and 339139 transitions. Second operand 10 states. [2018-10-26 20:06:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:06:45,582 INFO L93 Difference]: Finished difference Result 864588 states and 959150 transitions. [2018-10-26 20:06:45,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-26 20:06:45,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 374 [2018-10-26 20:06:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:06:45,583 INFO L225 Difference]: With dead ends: 864588 [2018-10-26 20:06:45,583 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:06:45,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-10-26 20:06:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:06:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:06:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:06:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:06:45,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 374 [2018-10-26 20:06:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:06:45,790 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:06:45,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:06:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:06:45,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:06:45,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:07:29,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:29,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,371 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:30,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:31,044 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:31,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:31,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:31,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:31,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:32,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:33,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:34,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:34,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:34,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:34,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:34,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:35,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:35,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:35,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:35,833 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:36,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:36,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:37,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:37,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:37,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:38,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:38,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:38,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:38,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:39,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:39,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:40,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:40,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:40,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:41,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:41,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:41,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:41,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:42,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:42,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:42,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:43,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:43,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:43,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:43,573 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:43,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:44,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:45,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:45,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:45,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:46,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:46,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:46,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:46,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:47,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:47,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:48,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:48,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:48,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:48,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:49,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:51,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:51,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:51,490 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:52,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:52,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:54,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:54,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:54,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:54,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:55,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:55,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:55,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:56,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:57,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:57,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:57,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:58,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:58,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:07:59,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:00,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:00,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:00,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:00,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:00,913 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:01,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:02,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:02,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:02,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:03,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:05,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:06,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:06,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:06,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:08,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:09,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:09,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:09,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:10,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:10,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:10,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:11,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:11,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:12,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:12,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:13,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:13,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:13,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:14,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:15,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:15,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:15,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:16,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:16,077 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:16,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:18,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:19,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:19,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:19,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:19,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:21,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:23,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:23,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:24,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:26,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:28,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:28,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:29,679 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:30,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:30,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:30,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:33,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:33,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:34,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:34,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:35,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:35,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:36,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:37,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:37,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:38,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:38,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:38,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:39,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:41,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:41,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 20:08:41,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-10-26 20:08:43,338 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-26 20:08:43,339 INFO L168 Benchmark]: Toolchain (without parser) took 228032.74 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,340 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 20:08:43,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1248.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 327.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,343 INFO L168 Benchmark]: Boogie Preprocessor took 132.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,343 INFO L168 Benchmark]: RCFGBuilder took 5796.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 273.6 MB). Peak memory consumption was 273.6 MB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,344 INFO L168 Benchmark]: TraceAbstraction took 220522.49 ms. Allocated memory was 2.2 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -867.9 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-10-26 20:08:43,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1248.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 327.86 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5796.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 273.6 MB). Peak memory consumption was 273.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220522.49 ms. Allocated memory was 2.2 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -867.9 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1590]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 6481. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown