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/Problem12_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 17:57:28,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 17:57:28,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 17:57:28,862 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 17:57:28,862 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 17:57:28,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 17:57:28,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 17:57:28,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 17:57:28,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 17:57:28,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 17:57:28,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 17:57:28,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 17:57:28,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 17:57:28,876 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 17:57:28,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 17:57:28,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 17:57:28,889 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 17:57:28,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 17:57:28,893 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 17:57:28,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 17:57:28,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 17:57:28,897 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 17:57:28,899 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 17:57:28,899 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 17:57:28,899 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 17:57:28,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 17:57:28,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 17:57:28,904 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 17:57:28,907 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 17:57:28,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 17:57:28,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 17:57:28,909 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 17:57:28,914 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 17:57:28,944 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 17:57:28,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 17:57:28,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 17:57:28,948 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 17:57:28,949 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 17:57:28,949 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 17:57:28,949 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 17:57:28,949 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 17:57:28,949 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 17:57:28,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 17:57:28,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 17:57:28,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 17:57:28,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 17:57:28,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 17:57:28,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 17:57:28,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 17:57:28,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 17:57:28,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 17:57:28,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 17:57:28,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 17:57:28,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 17:57:28,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 17:57:28,954 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 17:57:28,955 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 17:57:28,955 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 17:57:28,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 17:57:28,955 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 17:57:28,955 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 17:57:29,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 17:57:29,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 17:57:29,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 17:57:29,042 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 17:57:29,043 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 17:57:29,044 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-23 17:57:29,107 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006a2ff5d/925c7f5a8db844c083ac8b864d7c600f/FLAG46659ae0b [2018-10-23 17:57:29,828 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 17:57:29,828 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-23 17:57:29,862 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006a2ff5d/925c7f5a8db844c083ac8b864d7c600f/FLAG46659ae0b [2018-10-23 17:57:29,881 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/006a2ff5d/925c7f5a8db844c083ac8b864d7c600f [2018-10-23 17:57:29,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 17:57:29,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 17:57:29,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 17:57:29,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 17:57:29,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 17:57:29,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:29" (1/1) ... [2018-10-23 17:57:29,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9fe7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:29, skipping insertion in model container [2018-10-23 17:57:29,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:29" (1/1) ... [2018-10-23 17:57:29,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 17:57:30,069 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 17:57:31,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:57:31,341 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 17:57:31,920 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:57:31,955 INFO L193 MainTranslator]: Completed translation [2018-10-23 17:57:31,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31 WrapperNode [2018-10-23 17:57:31,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 17:57:31,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 17:57:31,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 17:57:31,958 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 17:57:31,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 17:57:32,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 17:57:32,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 17:57:32,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 17:57:32,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (1/1) ... [2018-10-23 17:57:32,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 17:57:32,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 17:57:32,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 17:57:32,843 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 17:57:32,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (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 17:57:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 17:57:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 17:57:32,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 17:57:42,424 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 17:57:42,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:42 BoogieIcfgContainer [2018-10-23 17:57:42,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 17:57:42,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 17:57:42,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 17:57:42,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 17:57:42,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:57:29" (1/3) ... [2018-10-23 17:57:42,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56570bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:42, skipping insertion in model container [2018-10-23 17:57:42,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:31" (2/3) ... [2018-10-23 17:57:42,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56570bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:42, skipping insertion in model container [2018-10-23 17:57:42,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:42" (3/3) ... [2018-10-23 17:57:42,434 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19_false-unreach-call.c [2018-10-23 17:57:42,444 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 17:57:42,454 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 17:57:42,472 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 17:57:42,517 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 17:57:42,517 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 17:57:42,517 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 17:57:42,517 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 17:57:42,518 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 17:57:42,518 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 17:57:42,518 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 17:57:42,518 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 17:57:42,518 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 17:57:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 17:57:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-23 17:57:42,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:42,573 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:57:42,576 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:42,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:42,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-23 17:57:42,584 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:42,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:42,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:42,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:42,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:42,928 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 17:57:42,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:57:42,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:57:42,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:57:42,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:57:42,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:57:42,957 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 17:57:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:57:56,734 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 17:57:56,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:57:56,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-23 17:57:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:57:56,780 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 17:57:56,780 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 17:57:56,789 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 17:57:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 17:57:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 17:57:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 17:57:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-23 17:57:56,950 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 15 [2018-10-23 17:57:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:57:56,952 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-23 17:57:56,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:57:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-23 17:57:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-23 17:57:56,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:56,956 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 17:57:56,958 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:56,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -373120294, now seen corresponding path program 1 times [2018-10-23 17:57:56,959 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:56,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:56,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:57:57,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:57:57,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:57:57,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:57:57,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:57:57,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:57:57,292 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-23 17:58:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:09,451 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-23 17:58:09,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:09,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-23 17:58:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:09,487 INFO L225 Difference]: With dead ends: 9150 [2018-10-23 17:58:09,487 INFO L226 Difference]: Without dead ends: 6832 [2018-10-23 17:58:09,493 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 17:58:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-23 17:58:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-23 17:58:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-23 17:58:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10776 transitions. [2018-10-23 17:58:09,626 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10776 transitions. Word has length 87 [2018-10-23 17:58:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:09,627 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10776 transitions. [2018-10-23 17:58:09,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10776 transitions. [2018-10-23 17:58:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-23 17:58:09,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:09,632 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:58:09,632 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:09,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:09,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1497999273, now seen corresponding path program 1 times [2018-10-23 17:58:09,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:09,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:09,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:09,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:09,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:09,976 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 17:58:10,155 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-10-23 17:58:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:10,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:10,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 17:58:10,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 17:58:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 17:58:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:58:10,412 INFO L87 Difference]: Start difference. First operand 6832 states and 10776 transitions. Second operand 6 states. [2018-10-23 17:58:10,608 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 17:58:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:27,028 INFO L93 Difference]: Finished difference Result 15918 states and 24201 transitions. [2018-10-23 17:58:27,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 17:58:27,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-23 17:58:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:27,072 INFO L225 Difference]: With dead ends: 15918 [2018-10-23 17:58:27,072 INFO L226 Difference]: Without dead ends: 9088 [2018-10-23 17:58:27,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:58:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-23 17:58:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-23 17:58:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-23 17:58:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12817 transitions. [2018-10-23 17:58:27,230 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12817 transitions. Word has length 93 [2018-10-23 17:58:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:27,231 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 12817 transitions. [2018-10-23 17:58:27,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 17:58:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12817 transitions. [2018-10-23 17:58:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-23 17:58:27,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:27,235 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:58:27,236 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:27,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash -629270407, now seen corresponding path program 1 times [2018-10-23 17:58:27,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:27,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:27,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:27,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:27,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:27,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:58:27,601 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 17:58:27,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:27,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:58:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:28,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:58:28,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 17:58:28,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 17:58:28,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 17:58:28,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:58:28,034 INFO L87 Difference]: Start difference. First operand 9088 states and 12817 transitions. Second operand 7 states. [2018-10-23 17:58:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:51,497 INFO L93 Difference]: Finished difference Result 48282 states and 70811 transitions. [2018-10-23 17:58:51,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 17:58:51,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2018-10-23 17:58:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:51,610 INFO L225 Difference]: With dead ends: 48282 [2018-10-23 17:58:51,610 INFO L226 Difference]: Without dead ends: 37689 [2018-10-23 17:58:51,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 17:58:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37689 states. [2018-10-23 17:58:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37689 to 22623. [2018-10-23 17:58:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22623 states. [2018-10-23 17:58:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22623 states to 22623 states and 27521 transitions. [2018-10-23 17:58:52,403 INFO L78 Accepts]: Start accepts. Automaton has 22623 states and 27521 transitions. Word has length 165 [2018-10-23 17:58:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:52,403 INFO L481 AbstractCegarLoop]: Abstraction has 22623 states and 27521 transitions. [2018-10-23 17:58:52,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 17:58:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 22623 states and 27521 transitions. [2018-10-23 17:58:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-23 17:58:52,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:52,420 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 17:58:52,420 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:52,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1816142010, now seen corresponding path program 1 times [2018-10-23 17:58:52,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:52,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:52,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:52,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:52,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-23 17:58:52,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:52,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:58:52,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:58:52,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:58:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:58:52,875 INFO L87 Difference]: Start difference. First operand 22623 states and 27521 transitions. Second operand 3 states. [2018-10-23 17:58:57,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:57,539 INFO L93 Difference]: Finished difference Result 51260 states and 63098 transitions. [2018-10-23 17:58:57,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:58:57,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 399 [2018-10-23 17:58:57,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:57,593 INFO L225 Difference]: With dead ends: 51260 [2018-10-23 17:58:57,594 INFO L226 Difference]: Without dead ends: 29391 [2018-10-23 17:58:57,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:58:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2018-10-23 17:58:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 28639. [2018-10-23 17:58:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28639 states. [2018-10-23 17:58:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28639 states to 28639 states and 34132 transitions. [2018-10-23 17:58:57,983 INFO L78 Accepts]: Start accepts. Automaton has 28639 states and 34132 transitions. Word has length 399 [2018-10-23 17:58:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:57,984 INFO L481 AbstractCegarLoop]: Abstraction has 28639 states and 34132 transitions. [2018-10-23 17:58:57,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:58:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 28639 states and 34132 transitions. [2018-10-23 17:58:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-10-23 17:58:57,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:57,997 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-23 17:58:57,997 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:57,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1157546942, now seen corresponding path program 1 times [2018-10-23 17:58:57,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:57,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:57,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:57,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:57,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-23 17:58:58,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:58,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:58:58,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:58,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:58,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:58,411 INFO L87 Difference]: Start difference. First operand 28639 states and 34132 transitions. Second operand 4 states. [2018-10-23 17:59:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:07,765 INFO L93 Difference]: Finished difference Result 99388 states and 118651 transitions. [2018-10-23 17:59:07,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:59:07,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 405 [2018-10-23 17:59:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:07,871 INFO L225 Difference]: With dead ends: 99388 [2018-10-23 17:59:07,872 INFO L226 Difference]: Without dead ends: 71503 [2018-10-23 17:59:07,918 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 17:59:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71503 states. [2018-10-23 17:59:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71503 to 70751. [2018-10-23 17:59:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70751 states. [2018-10-23 17:59:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70751 states to 70751 states and 79771 transitions. [2018-10-23 17:59:08,745 INFO L78 Accepts]: Start accepts. Automaton has 70751 states and 79771 transitions. Word has length 405 [2018-10-23 17:59:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:08,746 INFO L481 AbstractCegarLoop]: Abstraction has 70751 states and 79771 transitions. [2018-10-23 17:59:08,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:59:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 70751 states and 79771 transitions. [2018-10-23 17:59:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-23 17:59:08,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:08,774 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:08,774 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:08,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:08,775 INFO L82 PathProgramCache]: Analyzing trace with hash -480905004, now seen corresponding path program 1 times [2018-10-23 17:59:08,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:08,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:08,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:08,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:08,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-23 17:59:09,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:09,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:59:09,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:59:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:59:09,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:09,139 INFO L87 Difference]: Start difference. First operand 70751 states and 79771 transitions. Second operand 3 states. [2018-10-23 17:59:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:17,327 INFO L93 Difference]: Finished difference Result 182108 states and 206865 transitions. [2018-10-23 17:59:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:59:17,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 452 [2018-10-23 17:59:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:17,433 INFO L225 Difference]: With dead ends: 182108 [2018-10-23 17:59:17,433 INFO L226 Difference]: Without dead ends: 112111 [2018-10-23 17:59:17,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112111 states. [2018-10-23 17:59:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112111 to 109855. [2018-10-23 17:59:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109855 states. [2018-10-23 17:59:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109855 states to 109855 states and 121866 transitions. [2018-10-23 17:59:18,610 INFO L78 Accepts]: Start accepts. Automaton has 109855 states and 121866 transitions. Word has length 452 [2018-10-23 17:59:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:18,610 INFO L481 AbstractCegarLoop]: Abstraction has 109855 states and 121866 transitions. [2018-10-23 17:59:18,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:59:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 109855 states and 121866 transitions. [2018-10-23 17:59:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-10-23 17:59:18,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:18,644 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:18,644 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:18,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1812629239, now seen corresponding path program 1 times [2018-10-23 17:59:18,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:18,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:18,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:18,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:18,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-10-23 17:59:19,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:19,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 17:59:19,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 17:59:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 17:59:19,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:59:19,611 INFO L87 Difference]: Start difference. First operand 109855 states and 121866 transitions. Second operand 6 states. [2018-10-23 17:59:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:29,918 INFO L93 Difference]: Finished difference Result 219499 states and 243516 transitions. [2018-10-23 17:59:29,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 17:59:29,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 489 [2018-10-23 17:59:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:30,021 INFO L225 Difference]: With dead ends: 219499 [2018-10-23 17:59:30,022 INFO L226 Difference]: Without dead ends: 92319 [2018-10-23 17:59:30,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:59:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92319 states. [2018-10-23 17:59:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92319 to 87264. [2018-10-23 17:59:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87264 states. [2018-10-23 17:59:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87264 states to 87264 states and 92509 transitions. [2018-10-23 17:59:30,906 INFO L78 Accepts]: Start accepts. Automaton has 87264 states and 92509 transitions. Word has length 489 [2018-10-23 17:59:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:30,907 INFO L481 AbstractCegarLoop]: Abstraction has 87264 states and 92509 transitions. [2018-10-23 17:59:30,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 17:59:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 87264 states and 92509 transitions. [2018-10-23 17:59:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-23 17:59:30,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:30,926 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 17:59:30,926 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:30,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:30,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1826194161, now seen corresponding path program 1 times [2018-10-23 17:59:30,926 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:30,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:30,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:30,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:30,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2018-10-23 17:59:31,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:31,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:59:31,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:59:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:59:31,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:31,951 INFO L87 Difference]: Start difference. First operand 87264 states and 92509 transitions. Second operand 3 states. [2018-10-23 17:59:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:36,211 INFO L93 Difference]: Finished difference Result 175278 states and 185963 transitions. [2018-10-23 17:59:36,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:59:36,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-23 17:59:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:36,300 INFO L225 Difference]: With dead ends: 175278 [2018-10-23 17:59:36,301 INFO L226 Difference]: Without dead ends: 88768 [2018-10-23 17:59:36,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88768 states. [2018-10-23 17:59:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88768 to 84256. [2018-10-23 17:59:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84256 states. [2018-10-23 17:59:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84256 states to 84256 states and 88737 transitions. [2018-10-23 17:59:37,035 INFO L78 Accepts]: Start accepts. Automaton has 84256 states and 88737 transitions. Word has length 506 [2018-10-23 17:59:37,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:37,035 INFO L481 AbstractCegarLoop]: Abstraction has 84256 states and 88737 transitions. [2018-10-23 17:59:37,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:59:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 84256 states and 88737 transitions. [2018-10-23 17:59:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-10-23 17:59:37,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:37,056 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:59:37,056 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:37,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash 259889551, now seen corresponding path program 1 times [2018-10-23 17:59:37,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:37,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:37,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:37,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:37,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-23 17:59:37,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:37,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:59:37,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:59:37,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:59:37,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:59:37,527 INFO L87 Difference]: Start difference. First operand 84256 states and 88737 transitions. Second operand 4 states. [2018-10-23 17:59:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:44,833 INFO L93 Difference]: Finished difference Result 179790 states and 190361 transitions. [2018-10-23 17:59:44,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:59:44,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 586 [2018-10-23 17:59:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:44,928 INFO L225 Difference]: With dead ends: 179790 [2018-10-23 17:59:44,928 INFO L226 Difference]: Without dead ends: 96288 [2018-10-23 17:59:44,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 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 17:59:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96288 states. [2018-10-23 17:59:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96288 to 92528. [2018-10-23 17:59:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92528 states. [2018-10-23 17:59:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92528 states to 92528 states and 97141 transitions. [2018-10-23 17:59:45,849 INFO L78 Accepts]: Start accepts. Automaton has 92528 states and 97141 transitions. Word has length 586 [2018-10-23 17:59:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:45,851 INFO L481 AbstractCegarLoop]: Abstraction has 92528 states and 97141 transitions. [2018-10-23 17:59:45,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:59:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 92528 states and 97141 transitions. [2018-10-23 17:59:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-23 17:59:45,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:45,872 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:45,873 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:45,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash -353722807, now seen corresponding path program 1 times [2018-10-23 17:59:45,873 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:45,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:45,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:45,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:45,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:46,523 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 17:59:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-23 17:59:46,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:46,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:59:46,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:59:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:59:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:59:46,686 INFO L87 Difference]: Start difference. First operand 92528 states and 97141 transitions. Second operand 4 states. [2018-10-23 17:59:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:51,846 INFO L93 Difference]: Finished difference Result 196334 states and 206078 transitions. [2018-10-23 17:59:51,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:59:51,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 661 [2018-10-23 17:59:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:51,937 INFO L225 Difference]: With dead ends: 196334 [2018-10-23 17:59:51,937 INFO L226 Difference]: Without dead ends: 104560 [2018-10-23 17:59:51,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:59:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104560 states. [2018-10-23 17:59:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104560 to 99296. [2018-10-23 17:59:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99296 states. [2018-10-23 17:59:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99296 states to 99296 states and 103930 transitions. [2018-10-23 17:59:52,725 INFO L78 Accepts]: Start accepts. Automaton has 99296 states and 103930 transitions. Word has length 661 [2018-10-23 17:59:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:52,726 INFO L481 AbstractCegarLoop]: Abstraction has 99296 states and 103930 transitions. [2018-10-23 17:59:52,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:59:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 99296 states and 103930 transitions. [2018-10-23 17:59:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-23 17:59:52,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:52,747 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:59:52,747 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:52,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash 951502035, now seen corresponding path program 1 times [2018-10-23 17:59:52,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:52,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:52,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:52,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:52,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:53,701 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 17:59:54,151 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 11 [2018-10-23 17:59:54,662 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 11 [2018-10-23 17:59:54,927 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 13 [2018-10-23 17:59:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 593 proven. 262 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-23 17:59:55,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:59:55,838 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 17:59:55,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:56,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:59:56,545 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 24 [2018-10-23 18:00:22,639 WARN L179 SmtUtils]: Spent 25.77 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2018-10-23 18:00:23,453 WARN L179 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-23 18:00:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 738 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-23 18:00:26,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:00:26,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-23 18:00:26,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:00:26,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:00:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:00:26,124 INFO L87 Difference]: Start difference. First operand 99296 states and 103930 transitions. Second operand 12 states. [2018-10-23 18:01:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:11,215 INFO L93 Difference]: Finished difference Result 266288 states and 278669 transitions. [2018-10-23 18:01:11,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 18:01:11,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 665 [2018-10-23 18:01:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:11,394 INFO L225 Difference]: With dead ends: 266288 [2018-10-23 18:01:11,394 INFO L226 Difference]: Without dead ends: 163979 [2018-10-23 18:01:11,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2018-10-23 18:01:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163979 states. [2018-10-23 18:01:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163979 to 153441. [2018-10-23 18:01:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153441 states. [2018-10-23 18:01:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153441 states to 153441 states and 159194 transitions. [2018-10-23 18:01:13,474 INFO L78 Accepts]: Start accepts. Automaton has 153441 states and 159194 transitions. Word has length 665 [2018-10-23 18:01:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:13,475 INFO L481 AbstractCegarLoop]: Abstraction has 153441 states and 159194 transitions. [2018-10-23 18:01:13,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:01:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 153441 states and 159194 transitions. [2018-10-23 18:01:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-10-23 18:01:13,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:13,497 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:01:13,498 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:13,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:13,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1217374838, now seen corresponding path program 1 times [2018-10-23 18:01:13,498 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:13,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:13,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:13,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:13,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:14,113 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-23 18:01:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 606 proven. 143 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-23 18:01:14,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:01:14,727 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 18:01:14,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:14,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:01:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 694 proven. 55 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-23 18:01:16,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:01:16,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-23 18:01:16,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:01:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:01:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:01:16,340 INFO L87 Difference]: Start difference. First operand 153441 states and 159194 transitions. Second operand 10 states. Received shutdown request... [2018-10-23 18:01:28,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 18:01:28,157 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:01:28,162 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:01:28,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:01:28 BoogieIcfgContainer [2018-10-23 18:01:28,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:01:28,164 INFO L168 Benchmark]: Toolchain (without parser) took 238268.37 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 765.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,165 INFO L168 Benchmark]: CDTParser took 0.22 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 18:01:28,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2058.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 600.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,167 INFO L168 Benchmark]: Boogie Preprocessor took 283.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,168 INFO L168 Benchmark]: RCFGBuilder took 9582.95 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 218.6 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -179.9 MB). Peak memory consumption was 622.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,169 INFO L168 Benchmark]: TraceAbstraction took 225736.97 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -435.0 MB). Peak memory consumption was 664.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:28,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2058.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 600.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 283.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9582.95 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 218.6 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -179.9 MB). Peak memory consumption was 622.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225736.97 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -435.0 MB). Peak memory consumption was 664.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (153441states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (35030 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 225.6s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9604 SDtfs, 41469 SDslu, 1488 SDs, 0 SdLazy, 89264 SolverSat, 13265 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 143.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1612 GetRequests, 1535 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153441occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 47955 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 6737 NumberOfCodeBlocks, 6737 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6721 ConstructedInterpolants, 292 QuantifiedInterpolants, 24235047 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1906 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 7929/8511 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown