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/Problem11_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:05:30,276 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:05:30,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:05:30,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:05:30,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:05:30,292 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:05:30,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:05:30,300 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:05:30,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:05:30,308 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:05:30,309 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:05:30,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:05:30,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:05:30,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:05:30,318 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:05:30,319 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:05:30,322 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:05:30,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:05:30,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:05:30,331 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:05:30,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:05:30,333 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:05:30,336 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:05:30,336 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:05:30,336 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:05:30,337 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:05:30,338 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:05:30,339 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:05:30,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:05:30,341 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:05:30,341 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:05:30,342 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:05:30,344 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 [2018-10-23 20:05:30,360 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:05:30,360 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:05:30,361 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:05:30,361 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:05:30,362 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:05:30,362 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:05:30,362 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:05:30,363 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:05:30,363 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:05:30,363 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:05:30,363 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:05:30,363 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:05:30,364 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:05:30,364 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:05:30,364 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:05:30,364 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:05:30,364 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:05:30,365 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:05:30,365 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:05:30,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:05:30,365 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:05:30,365 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:05:30,366 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:05:30,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:05:30,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:05:30,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:05:30,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:05:30,432 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:05:30,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-23 20:05:30,492 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff3bb9c89/ef681bba49874fc6b864daa3115babfe/FLAGcf8c03a4f [2018-10-23 20:05:31,113 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:05:31,114 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-23 20:05:31,130 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff3bb9c89/ef681bba49874fc6b864daa3115babfe/FLAGcf8c03a4f [2018-10-23 20:05:31,148 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff3bb9c89/ef681bba49874fc6b864daa3115babfe [2018-10-23 20:05:31,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:05:31,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:05:31,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:05:31,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:05:31,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:05:31,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:05:31" (1/1) ... [2018-10-23 20:05:31,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436ba03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:31, skipping insertion in model container [2018-10-23 20:05:31,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:05:31" (1/1) ... [2018-10-23 20:05:31,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:05:31,272 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:05:31,877 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:05:31,881 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:05:32,094 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:05:32,115 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:05:32,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32 WrapperNode [2018-10-23 20:05:32,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:05:32,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:05:32,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:05:32,117 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:05:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:05:32,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:05:32,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:05:32,405 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:05:32,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (1/1) ... [2018-10-23 20:05:32,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:05:32,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:05:32,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:05:32,545 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:05:32,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (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 [2018-10-23 20:05:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:05:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:05:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:05:36,805 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:05:36,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:05:36 BoogieIcfgContainer [2018-10-23 20:05:36,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:05:36,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:05:36,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:05:36,816 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:05:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:05:31" (1/3) ... [2018-10-23 20:05:36,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31668bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:05:36, skipping insertion in model container [2018-10-23 20:05:36,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:32" (2/3) ... [2018-10-23 20:05:36,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31668bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:05:36, skipping insertion in model container [2018-10-23 20:05:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:05:36" (3/3) ... [2018-10-23 20:05:36,821 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label57_true-unreach-call.c [2018-10-23 20:05:36,832 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:05:36,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:05:36,858 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:05:36,898 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:05:36,899 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:05:36,899 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:05:36,899 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:05:36,899 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:05:36,899 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:05:36,903 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:05:36,903 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:05:36,904 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:05:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-23 20:05:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-23 20:05:36,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:36,941 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] [2018-10-23 20:05:36,944 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:36,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:36,951 INFO L82 PathProgramCache]: Analyzing trace with hash 84973194, now seen corresponding path program 1 times [2018-10-23 20:05:36,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:36,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:37,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:37,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:37,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:05:37,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:05:37,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:05:37,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:05:37,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:05:37,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:37,476 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-23 20:05:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:40,887 INFO L93 Difference]: Finished difference Result 974 states and 1747 transitions. [2018-10-23 20:05:40,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:05:40,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-10-23 20:05:40,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:40,915 INFO L225 Difference]: With dead ends: 974 [2018-10-23 20:05:40,915 INFO L226 Difference]: Without dead ends: 683 [2018-10-23 20:05:40,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-23 20:05:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 677. [2018-10-23 20:05:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2018-10-23 20:05:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1087 transitions. [2018-10-23 20:05:41,047 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1087 transitions. Word has length 47 [2018-10-23 20:05:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:05:41,047 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 1087 transitions. [2018-10-23 20:05:41,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:05:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1087 transitions. [2018-10-23 20:05:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 20:05:41,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:41,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:05:41,061 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:41,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1103993199, now seen corresponding path program 1 times [2018-10-23 20:05:41,062 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:41,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:41,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:41,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:41,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:05:41,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:05:41,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:05:41,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:05:41,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:05:41,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:41,527 INFO L87 Difference]: Start difference. First operand 677 states and 1087 transitions. Second operand 4 states. [2018-10-23 20:05:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:46,347 INFO L93 Difference]: Finished difference Result 2487 states and 4110 transitions. [2018-10-23 20:05:46,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:05:46,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-23 20:05:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:46,359 INFO L225 Difference]: With dead ends: 2487 [2018-10-23 20:05:46,359 INFO L226 Difference]: Without dead ends: 1812 [2018-10-23 20:05:46,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2018-10-23 20:05:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1795. [2018-10-23 20:05:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-23 20:05:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2709 transitions. [2018-10-23 20:05:46,424 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2709 transitions. Word has length 117 [2018-10-23 20:05:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:05:46,425 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2709 transitions. [2018-10-23 20:05:46,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:05:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2709 transitions. [2018-10-23 20:05:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-23 20:05:46,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:46,437 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:05:46,437 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:46,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:46,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1314248931, now seen corresponding path program 1 times [2018-10-23 20:05:46,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:46,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:46,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:46,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:46,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-23 20:05:46,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:05:46,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:05:46,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:05:46,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:05:46,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:46,794 INFO L87 Difference]: Start difference. First operand 1795 states and 2709 transitions. Second operand 4 states. [2018-10-23 20:05:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:49,789 INFO L93 Difference]: Finished difference Result 6743 states and 10187 transitions. [2018-10-23 20:05:49,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:05:49,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 262 [2018-10-23 20:05:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:49,815 INFO L225 Difference]: With dead ends: 6743 [2018-10-23 20:05:49,816 INFO L226 Difference]: Without dead ends: 4950 [2018-10-23 20:05:49,820 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 [2018-10-23 20:05:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2018-10-23 20:05:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4580. [2018-10-23 20:05:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2018-10-23 20:05:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 6235 transitions. [2018-10-23 20:05:49,913 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 6235 transitions. Word has length 262 [2018-10-23 20:05:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:05:49,914 INFO L481 AbstractCegarLoop]: Abstraction has 4580 states and 6235 transitions. [2018-10-23 20:05:49,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:05:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 6235 transitions. [2018-10-23 20:05:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-23 20:05:49,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:49,923 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:05:49,923 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:49,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2142506900, now seen corresponding path program 1 times [2018-10-23 20:05:49,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:49,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:49,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:49,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:49,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-23 20:05:50,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:05:50,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:05:50,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:05:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:05:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:05:50,234 INFO L87 Difference]: Start difference. First operand 4580 states and 6235 transitions. Second operand 5 states. [2018-10-23 20:05:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:56,491 INFO L93 Difference]: Finished difference Result 10102 states and 13619 transitions. [2018-10-23 20:05:56,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:05:56,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2018-10-23 20:05:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:56,512 INFO L225 Difference]: With dead ends: 10102 [2018-10-23 20:05:56,512 INFO L226 Difference]: Without dead ends: 5338 [2018-10-23 20:05:56,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:05:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2018-10-23 20:05:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 4764. [2018-10-23 20:05:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4764 states. [2018-10-23 20:05:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 6445 transitions. [2018-10-23 20:05:56,606 INFO L78 Accepts]: Start accepts. Automaton has 4764 states and 6445 transitions. Word has length 280 [2018-10-23 20:05:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:05:56,606 INFO L481 AbstractCegarLoop]: Abstraction has 4764 states and 6445 transitions. [2018-10-23 20:05:56,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:05:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4764 states and 6445 transitions. [2018-10-23 20:05:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-23 20:05:56,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:56,617 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-23 20:05:56,618 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:56,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash -939034974, now seen corresponding path program 1 times [2018-10-23 20:05:56,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:56,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:56,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:56,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:56,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:56,917 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:05:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-10-23 20:05:56,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:05:56,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:05:56,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:05:56,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:05:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:56,986 INFO L87 Difference]: Start difference. First operand 4764 states and 6445 transitions. Second operand 4 states. [2018-10-23 20:05:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:59,934 INFO L93 Difference]: Finished difference Result 12498 states and 16996 transitions. [2018-10-23 20:05:59,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:05:59,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2018-10-23 20:05:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:59,964 INFO L225 Difference]: With dead ends: 12498 [2018-10-23 20:05:59,964 INFO L226 Difference]: Without dead ends: 7736 [2018-10-23 20:05:59,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:05:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2018-10-23 20:06:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 7532. [2018-10-23 20:06:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2018-10-23 20:06:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 9775 transitions. [2018-10-23 20:06:00,104 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 9775 transitions. Word has length 335 [2018-10-23 20:06:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:06:00,105 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 9775 transitions. [2018-10-23 20:06:00,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:06:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 9775 transitions. [2018-10-23 20:06:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-23 20:06:00,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:06:00,121 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:06:00,121 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:06:00,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:06:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1025622735, now seen corresponding path program 1 times [2018-10-23 20:06:00,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:06:00,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:06:00,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:06:00,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:06:00,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:06:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:06:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 45 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:06:01,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:06:01,098 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 [2018-10-23 20:06:01,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:06:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:06:01,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:06:01,487 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 20:06:03,895 WARN L179 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2018-10-23 20:06:04,402 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-23 20:06:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:06:05,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:06:05,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-23 20:06:05,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:06:05,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:06:05,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2018-10-23 20:06:05,299 INFO L87 Difference]: Start difference. First operand 7532 states and 9775 transitions. Second operand 10 states. [2018-10-23 20:06:08,390 WARN L179 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 31 [2018-10-23 20:06:10,853 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-23 20:06:25,573 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 30 [2018-10-23 20:09:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:39,270 INFO L93 Difference]: Finished difference Result 38097 states and 50552 transitions. [2018-10-23 20:09:39,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-23 20:09:39,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 354 [2018-10-23 20:09:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:39,372 INFO L225 Difference]: With dead ends: 38097 [2018-10-23 20:09:39,373 INFO L226 Difference]: Without dead ends: 29263 [2018-10-23 20:09:39,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=224, Invalid=701, Unknown=5, NotChecked=0, Total=930 [2018-10-23 20:09:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29263 states. [2018-10-23 20:09:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29263 to 21045. [2018-10-23 20:09:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21045 states. [2018-10-23 20:09:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21045 states to 21045 states and 26032 transitions. [2018-10-23 20:09:39,855 INFO L78 Accepts]: Start accepts. Automaton has 21045 states and 26032 transitions. Word has length 354 [2018-10-23 20:09:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:39,856 INFO L481 AbstractCegarLoop]: Abstraction has 21045 states and 26032 transitions. [2018-10-23 20:09:39,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:09:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 21045 states and 26032 transitions. [2018-10-23 20:09:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-23 20:09:39,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:39,898 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:09:39,899 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:39,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1855735118, now seen corresponding path program 1 times [2018-10-23 20:09:39,900 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:39,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:39,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:39,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:39,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:40,377 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-23 20:09:40,628 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-23 20:09:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 439 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-23 20:09:40,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:40,956 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 [2018-10-23 20:09:40,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:41,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-23 20:09:41,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:09:41,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:09:41,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:09:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:09:41,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:09:41,843 INFO L87 Difference]: Start difference. First operand 21045 states and 26032 transitions. Second operand 7 states. [2018-10-23 20:09:46,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:46,352 INFO L93 Difference]: Finished difference Result 43201 states and 53271 transitions. [2018-10-23 20:09:46,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:09:46,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2018-10-23 20:09:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:46,381 INFO L225 Difference]: With dead ends: 43201 [2018-10-23 20:09:46,381 INFO L226 Difference]: Without dead ends: 22528 [2018-10-23 20:09:46,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:09:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22528 states. [2018-10-23 20:09:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22528 to 19186. [2018-10-23 20:09:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19186 states. [2018-10-23 20:09:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19186 states to 19186 states and 23111 transitions. [2018-10-23 20:09:46,708 INFO L78 Accepts]: Start accepts. Automaton has 19186 states and 23111 transitions. Word has length 460 [2018-10-23 20:09:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:46,709 INFO L481 AbstractCegarLoop]: Abstraction has 19186 states and 23111 transitions. [2018-10-23 20:09:46,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:09:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 19186 states and 23111 transitions. [2018-10-23 20:09:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-23 20:09:46,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:46,750 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:46,750 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:46,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:46,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1140478088, now seen corresponding path program 1 times [2018-10-23 20:09:46,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:46,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:46,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:47,295 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:09:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 20:09:47,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:47,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:47,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:47,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:47,509 INFO L87 Difference]: Start difference. First operand 19186 states and 23111 transitions. Second operand 4 states. [2018-10-23 20:09:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:49,311 INFO L93 Difference]: Finished difference Result 38200 states and 46048 transitions. [2018-10-23 20:09:49,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:49,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 510 [2018-10-23 20:09:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:49,344 INFO L225 Difference]: With dead ends: 38200 [2018-10-23 20:09:49,344 INFO L226 Difference]: Without dead ends: 19386 [2018-10-23 20:09:49,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19386 states. [2018-10-23 20:09:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19386 to 19000. [2018-10-23 20:09:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19000 states. [2018-10-23 20:09:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19000 states to 19000 states and 22261 transitions. [2018-10-23 20:09:49,609 INFO L78 Accepts]: Start accepts. Automaton has 19000 states and 22261 transitions. Word has length 510 [2018-10-23 20:09:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:49,609 INFO L481 AbstractCegarLoop]: Abstraction has 19000 states and 22261 transitions. [2018-10-23 20:09:49,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19000 states and 22261 transitions. [2018-10-23 20:09:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-10-23 20:09:49,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:49,652 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:49,653 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:49,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash -87370645, now seen corresponding path program 1 times [2018-10-23 20:09:49,653 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:49,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:49,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:49,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:49,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 547 proven. 151 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 20:09:50,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:50,202 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 [2018-10-23 20:09:50,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:50,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:50,678 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 20:09:51,115 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 22 [2018-10-23 20:09:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 460 proven. 238 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 20:09:52,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:09:52,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-23 20:09:52,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:09:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:09:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:09:52,508 INFO L87 Difference]: Start difference. First operand 19000 states and 22261 transitions. Second operand 11 states. Received shutdown request... [2018-10-23 20:09:53,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:09:53,523 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:09:53,528 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:09:53,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:09:53 BoogieIcfgContainer [2018-10-23 20:09:53,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:09:53,530 INFO L168 Benchmark]: Toolchain (without parser) took 262369.44 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -152.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 20:09:53,531 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:09:53,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 953.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:09:53,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 287.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:09:53,533 INFO L168 Benchmark]: Boogie Preprocessor took 139.16 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:09:53,533 INFO L168 Benchmark]: RCFGBuilder took 4264.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 194.9 MB). Peak memory consumption was 194.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:09:53,534 INFO L168 Benchmark]: TraceAbstraction took 256717.00 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 599.3 MB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 446.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-23 20:09:53,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 953.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 287.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.16 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4264.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 194.9 MB). Peak memory consumption was 194.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256717.00 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 599.3 MB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 446.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (19000states) and FLOYD_HOARE automaton (currently 6 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (395 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 256.6s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 242.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1495 SDtfs, 10196 SDslu, 1397 SDs, 0 SdLazy, 16715 SolverSat, 6887 SolverUnsat, 236 SolverUnknown, 0 SolverNotchecked, 227.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1406 GetRequests, 1342 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21045occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 13117 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 4233 NumberOfCodeBlocks, 4233 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4221 ConstructedInterpolants, 358 QuantifiedInterpolants, 10353445 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1713 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 3730/4526 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown