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/Problem13_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:18,930 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:18,932 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:18,953 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:18,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:18,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:18,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:18,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:18,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:18,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:18,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:18,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:18,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:18,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:18,972 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:18,972 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:18,973 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:18,975 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:18,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:18,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:18,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:18,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:18,986 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:19:18,989 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:19:18,989 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:19:18,990 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:19:18,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:19:18,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:19:18,995 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:19:18,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:19:18,997 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:19:18,999 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:19:19,004 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:19:19,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:19,029 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:19,030 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:19,030 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:19,030 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:19,030 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:19,033 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:19,034 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:19,034 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:19,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:19,034 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:19,034 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:19,035 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:19,035 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:19,035 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:19,035 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:19,035 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:19,036 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:19,036 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:19,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:19,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:19,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:19,037 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:19,038 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:19,038 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:19,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:19,038 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:19,039 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:19,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:19,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:19,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:19,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:19,111 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:19,112 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-10-24 16:19:19,180 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfec31b72/243051d985194366bd51ade4179e503b/FLAG23e623c05 [2018-10-24 16:19:19,939 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:19,940 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-10-24 16:19:19,971 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfec31b72/243051d985194366bd51ade4179e503b/FLAG23e623c05 [2018-10-24 16:19:19,992 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfec31b72/243051d985194366bd51ade4179e503b [2018-10-24 16:19:20,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:20,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:20,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:20,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:20,017 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:20,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:19" (1/1) ... [2018-10-24 16:19:20,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b704e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:20, skipping insertion in model container [2018-10-24 16:19:20,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:19" (1/1) ... [2018-10-24 16:19:20,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:20,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:21,681 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:21,686 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:22,410 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:22,449 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:22,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22 WrapperNode [2018-10-24 16:19:22,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:22,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:22,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:22,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:22,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:22,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:23,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:23,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:23,256 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:23,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... [2018-10-24 16:19:23,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:23,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:23,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:23,710 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:23,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:19:39,677 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:19:39,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:39 BoogieIcfgContainer [2018-10-24 16:19:39,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:19:39,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:19:39,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:19:39,683 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:19:39,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:19" (1/3) ... [2018-10-24 16:19:39,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd554f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:39, skipping insertion in model container [2018-10-24 16:19:39,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:22" (2/3) ... [2018-10-24 16:19:39,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd554f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:39, skipping insertion in model container [2018-10-24 16:19:39,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:39" (3/3) ... [2018-10-24 16:19:39,686 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-10-24 16:19:39,696 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:19:39,707 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:19:39,724 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:19:39,770 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:19:39,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:19:39,771 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:19:39,771 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:19:39,771 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:19:39,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:19:39,771 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:19:39,771 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:19:39,771 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:19:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:19:39,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 16:19:39,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:39,819 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] [2018-10-24 16:19:39,822 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:39,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:39,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1433927590, now seen corresponding path program 1 times [2018-10-24 16:19:39,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:39,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:39,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:39,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:39,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:40,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:40,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:19:40,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:40,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:40,243 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:19:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:54,515 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-24 16:19:54,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:54,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-24 16:19:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:54,564 INFO L225 Difference]: With dead ends: 3993 [2018-10-24 16:19:54,564 INFO L226 Difference]: Without dead ends: 2887 [2018-10-24 16:19:54,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:54,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-24 16:19:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-24 16:19:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-24 16:19:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-24 16:19:54,741 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 35 [2018-10-24 16:19:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-24 16:19:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-24 16:19:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 16:19:54,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:54,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:54,750 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:54,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:54,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1015454466, now seen corresponding path program 1 times [2018-10-24 16:19:54,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:54,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:54,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:54,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:54,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:55,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:55,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:19:55,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:55,018 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-24 16:20:08,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:08,319 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-24 16:20:08,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:08,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-24 16:20:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:08,359 INFO L225 Difference]: With dead ends: 7120 [2018-10-24 16:20:08,359 INFO L226 Difference]: Without dead ends: 5186 [2018-10-24 16:20:08,365 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 [2018-10-24 16:20:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-24 16:20:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-24 16:20:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-24 16:20:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-24 16:20:08,464 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 104 [2018-10-24 16:20:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:08,464 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-24 16:20:08,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-24 16:20:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 16:20:08,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:08,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:08,476 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:08,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:08,478 INFO L82 PathProgramCache]: Analyzing trace with hash 204454873, now seen corresponding path program 1 times [2018-10-24 16:20:08,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:08,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:08,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:08,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:08,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:08,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:08,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:08,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:08,837 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-24 16:20:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:18,763 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-24 16:20:18,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:18,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-24 16:20:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:18,818 INFO L225 Difference]: With dead ends: 12674 [2018-10-24 16:20:18,818 INFO L226 Difference]: Without dead ends: 9122 [2018-10-24 16:20:18,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-24 16:20:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-24 16:20:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-24 16:20:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-24 16:20:19,024 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 117 [2018-10-24 16:20:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:19,025 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-24 16:20:19,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-24 16:20:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 16:20:19,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:19,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:19,032 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:19,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1472006328, now seen corresponding path program 1 times [2018-10-24 16:20:19,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:19,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:19,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:19,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:19,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:19,504 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:20:20,297 WARN L179 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:20:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:20,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:20,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:20,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:20,487 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-24 16:20:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:32,756 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-24 16:20:32,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:32,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-24 16:20:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:32,833 INFO L225 Difference]: With dead ends: 29264 [2018-10-24 16:20:32,833 INFO L226 Difference]: Without dead ends: 20151 [2018-10-24 16:20:32,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-24 16:20:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-24 16:20:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-24 16:20:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-24 16:20:33,405 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 138 [2018-10-24 16:20:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:33,405 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-24 16:20:33,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-24 16:20:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 16:20:33,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:33,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:33,409 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:33,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:33,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2000787026, now seen corresponding path program 1 times [2018-10-24 16:20:33,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:33,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:33,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:33,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:33,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 16:20:33,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:33,755 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:33,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:33,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-24 16:20:34,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:34,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:20:34,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:34,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:34,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:34,043 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-24 16:20:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:49,950 INFO L93 Difference]: Finished difference Result 69485 states and 98351 transitions. [2018-10-24 16:20:49,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:49,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-24 16:20:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:50,054 INFO L225 Difference]: With dead ends: 69485 [2018-10-24 16:20:50,054 INFO L226 Difference]: Without dead ends: 50126 [2018-10-24 16:20:50,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50126 states. [2018-10-24 16:20:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50126 to 50100. [2018-10-24 16:20:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50100 states. [2018-10-24 16:20:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50100 states to 50100 states and 64534 transitions. [2018-10-24 16:20:50,843 INFO L78 Accepts]: Start accepts. Automaton has 50100 states and 64534 transitions. Word has length 161 [2018-10-24 16:20:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:50,844 INFO L481 AbstractCegarLoop]: Abstraction has 50100 states and 64534 transitions. [2018-10-24 16:20:50,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 50100 states and 64534 transitions. [2018-10-24 16:20:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-24 16:20:50,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:50,877 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:50,878 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:50,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -96016346, now seen corresponding path program 1 times [2018-10-24 16:20:50,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:50,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:50,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:50,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:50,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-24 16:20:51,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:51,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:51,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:51,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:51,546 INFO L87 Difference]: Start difference. First operand 50100 states and 64534 transitions. Second operand 4 states. [2018-10-24 16:21:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:04,402 INFO L93 Difference]: Finished difference Result 145896 states and 190404 transitions. [2018-10-24 16:21:04,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:04,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 488 [2018-10-24 16:21:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:04,576 INFO L225 Difference]: With dead ends: 145896 [2018-10-24 16:21:04,576 INFO L226 Difference]: Without dead ends: 96586 [2018-10-24 16:21:04,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96586 states. [2018-10-24 16:21:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96586 to 96582. [2018-10-24 16:21:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96582 states. [2018-10-24 16:21:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96582 states to 96582 states and 118394 transitions. [2018-10-24 16:21:05,703 INFO L78 Accepts]: Start accepts. Automaton has 96582 states and 118394 transitions. Word has length 488 [2018-10-24 16:21:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:05,703 INFO L481 AbstractCegarLoop]: Abstraction has 96582 states and 118394 transitions. [2018-10-24 16:21:05,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 96582 states and 118394 transitions. [2018-10-24 16:21:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-24 16:21:05,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:05,777 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:05,777 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:05,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:05,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1612327390, now seen corresponding path program 1 times [2018-10-24 16:21:05,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:05,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:05,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:05,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-24 16:21:07,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:07,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:07,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:07,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:07,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:07,179 INFO L87 Difference]: Start difference. First operand 96582 states and 118394 transitions. Second operand 5 states. [2018-10-24 16:21:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:29,830 INFO L93 Difference]: Finished difference Result 285661 states and 345385 transitions. [2018-10-24 16:21:29,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:29,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 644 [2018-10-24 16:21:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:30,100 INFO L225 Difference]: With dead ends: 285661 [2018-10-24 16:21:30,101 INFO L226 Difference]: Without dead ends: 189869 [2018-10-24 16:21:30,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189869 states. [2018-10-24 16:21:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189869 to 185747. [2018-10-24 16:21:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185747 states. [2018-10-24 16:21:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185747 states to 185747 states and 218624 transitions. [2018-10-24 16:21:31,907 INFO L78 Accepts]: Start accepts. Automaton has 185747 states and 218624 transitions. Word has length 644 [2018-10-24 16:21:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:31,907 INFO L481 AbstractCegarLoop]: Abstraction has 185747 states and 218624 transitions. [2018-10-24 16:21:31,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 185747 states and 218624 transitions. [2018-10-24 16:21:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-24 16:21:31,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:31,970 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:31,970 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:31,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:31,971 INFO L82 PathProgramCache]: Analyzing trace with hash 341540048, now seen corresponding path program 1 times [2018-10-24 16:21:31,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:31,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:31,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:31,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:31,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-10-24 16:21:33,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:33,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:33,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:33,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:33,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:33,322 INFO L87 Difference]: Start difference. First operand 185747 states and 218624 transitions. Second operand 4 states. [2018-10-24 16:21:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:43,549 INFO L93 Difference]: Finished difference Result 416423 states and 491736 transitions. [2018-10-24 16:21:43,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:43,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 655 [2018-10-24 16:21:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:43,853 INFO L225 Difference]: With dead ends: 416423 [2018-10-24 16:21:43,853 INFO L226 Difference]: Without dead ends: 231466 [2018-10-24 16:21:43,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231466 states. [2018-10-24 16:21:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231466 to 223538. [2018-10-24 16:21:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223538 states. [2018-10-24 16:21:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223538 states to 223538 states and 254241 transitions. [2018-10-24 16:21:46,969 INFO L78 Accepts]: Start accepts. Automaton has 223538 states and 254241 transitions. Word has length 655 [2018-10-24 16:21:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:46,969 INFO L481 AbstractCegarLoop]: Abstraction has 223538 states and 254241 transitions. [2018-10-24 16:21:46,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 223538 states and 254241 transitions. [2018-10-24 16:21:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2018-10-24 16:21:47,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:47,030 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:47,030 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:47,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1309523719, now seen corresponding path program 1 times [2018-10-24 16:21:47,031 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:47,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:47,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:47,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:47,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:48,023 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 16:21:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:21:49,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:49,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 16:21:49,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:21:49,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:21:49,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:21:49,989 INFO L87 Difference]: Start difference. First operand 223538 states and 254241 transitions. Second operand 7 states. [2018-10-24 16:22:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:06,016 INFO L93 Difference]: Finished difference Result 474500 states and 538985 transitions. [2018-10-24 16:22:06,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:22:06,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 764 [2018-10-24 16:22:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:06,286 INFO L225 Difference]: With dead ends: 474500 [2018-10-24 16:22:06,286 INFO L226 Difference]: Without dead ends: 251752 [2018-10-24 16:22:06,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:22:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251752 states. [2018-10-24 16:22:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251752 to 222738. [2018-10-24 16:22:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222738 states. [2018-10-24 16:22:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222738 states to 222738 states and 245688 transitions. [2018-10-24 16:22:10,988 INFO L78 Accepts]: Start accepts. Automaton has 222738 states and 245688 transitions. Word has length 764 [2018-10-24 16:22:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:10,989 INFO L481 AbstractCegarLoop]: Abstraction has 222738 states and 245688 transitions. [2018-10-24 16:22:10,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:22:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 222738 states and 245688 transitions. [2018-10-24 16:22:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-10-24 16:22:11,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:11,028 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:11,028 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:11,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:11,029 INFO L82 PathProgramCache]: Analyzing trace with hash -288772535, now seen corresponding path program 1 times [2018-10-24 16:22:11,029 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:11,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:11,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:11,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:11,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-24 16:22:11,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:11,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:11,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:11,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:11,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:11,563 INFO L87 Difference]: Start difference. First operand 222738 states and 245688 transitions. Second operand 4 states. [2018-10-24 16:22:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:26,349 INFO L93 Difference]: Finished difference Result 486471 states and 537173 transitions. [2018-10-24 16:22:26,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:26,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 771 [2018-10-24 16:22:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:26,644 INFO L225 Difference]: With dead ends: 486471 [2018-10-24 16:22:26,644 INFO L226 Difference]: Without dead ends: 264523 [2018-10-24 16:22:26,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264523 states. [2018-10-24 16:22:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264523 to 257400. [2018-10-24 16:22:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257400 states. [2018-10-24 16:22:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257400 states to 257400 states and 278712 transitions. [2018-10-24 16:22:30,381 INFO L78 Accepts]: Start accepts. Automaton has 257400 states and 278712 transitions. Word has length 771 [2018-10-24 16:22:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:30,381 INFO L481 AbstractCegarLoop]: Abstraction has 257400 states and 278712 transitions. [2018-10-24 16:22:30,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 257400 states and 278712 transitions. [2018-10-24 16:22:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2018-10-24 16:22:30,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:30,477 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 16:22:30,477 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:30,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:30,478 INFO L82 PathProgramCache]: Analyzing trace with hash -538306718, now seen corresponding path program 1 times [2018-10-24 16:22:30,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:30,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:30,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:30,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:30,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:30,955 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:22:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 899 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-24 16:22:32,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:32,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:32,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:32,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:32,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:32,226 INFO L87 Difference]: Start difference. First operand 257400 states and 278712 transitions. Second operand 4 states. [2018-10-24 16:22:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:42,570 INFO L93 Difference]: Finished difference Result 526617 states and 570104 transitions. [2018-10-24 16:22:42,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:42,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 949 [2018-10-24 16:22:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:42,837 INFO L225 Difference]: With dead ends: 526617 [2018-10-24 16:22:42,837 INFO L226 Difference]: Without dead ends: 234493 [2018-10-24 16:22:42,942 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 [2018-10-24 16:22:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234493 states. [2018-10-24 16:22:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234493 to 220302. [2018-10-24 16:22:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220302 states. [2018-10-24 16:22:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220302 states to 220302 states and 235805 transitions. [2018-10-24 16:22:45,553 INFO L78 Accepts]: Start accepts. Automaton has 220302 states and 235805 transitions. Word has length 949 [2018-10-24 16:22:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:45,554 INFO L481 AbstractCegarLoop]: Abstraction has 220302 states and 235805 transitions. [2018-10-24 16:22:45,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 220302 states and 235805 transitions. [2018-10-24 16:22:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-24 16:22:45,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:45,617 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:22:45,617 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:45,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:45,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1189776815, now seen corresponding path program 1 times [2018-10-24 16:22:45,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:45,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:45,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:45,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:45,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:46,483 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:22:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 1491 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-10-24 16:22:47,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:47,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:47,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:47,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:47,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:47,893 INFO L87 Difference]: Start difference. First operand 220302 states and 235805 transitions. Second operand 4 states. [2018-10-24 16:22:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:57,856 INFO L93 Difference]: Finished difference Result 437473 states and 468313 transitions. [2018-10-24 16:22:57,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:57,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1070 [2018-10-24 16:22:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:58,094 INFO L225 Difference]: With dead ends: 437473 [2018-10-24 16:22:58,094 INFO L226 Difference]: Without dead ends: 217960 [2018-10-24 16:22:58,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217960 states. [2018-10-24 16:23:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217960 to 212404. [2018-10-24 16:23:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212404 states. [2018-10-24 16:23:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212404 states to 212404 states and 222432 transitions. [2018-10-24 16:23:00,763 INFO L78 Accepts]: Start accepts. Automaton has 212404 states and 222432 transitions. Word has length 1070 [2018-10-24 16:23:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:00,764 INFO L481 AbstractCegarLoop]: Abstraction has 212404 states and 222432 transitions. [2018-10-24 16:23:00,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 212404 states and 222432 transitions. [2018-10-24 16:23:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2018-10-24 16:23:00,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:00,836 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:00,837 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:00,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 668033294, now seen corresponding path program 1 times [2018-10-24 16:23:00,837 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:00,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:00,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:00,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 16:23:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 1540 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2018-10-24 16:23:06,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:06,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:06,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:23:06,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:23:06,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:23:06,034 INFO L87 Difference]: Start difference. First operand 212404 states and 222432 transitions. Second operand 3 states. [2018-10-24 16:23:06,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 16:23:06,036 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:06,042 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:06,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:06 BoogieIcfgContainer [2018-10-24 16:23:06,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:06,044 INFO L168 Benchmark]: Toolchain (without parser) took 226037.18 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,045 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. [2018-10-24 16:23:06,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2439.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 804.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,050 INFO L168 Benchmark]: Boogie Preprocessor took 453.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,051 INFO L168 Benchmark]: RCFGBuilder took 15968.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 238.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 588.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,052 INFO L168 Benchmark]: TraceAbstraction took 206364.13 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 986.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:06,059 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 2439.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 804.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 453.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15968.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 238.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 588.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206364.13 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 986.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (212404states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 165.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8794 SDtfs, 33164 SDslu, 3746 SDs, 0 SdLazy, 62756 SolverSat, 19700 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 131.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 181 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257400occurred in iteration=10, 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: 21.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 70556 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 7216 NumberOfCodeBlocks, 7216 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7202 ConstructedInterpolants, 0 QuantifiedInterpolants, 11447958 SizeOfPredicates, 1 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 9279/9281 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown