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/Problem19_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:44:34,688 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:44:34,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:44:34,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:44:34,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:44:34,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:44:34,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:44:34,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:44:34,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:44:34,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:44:34,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:44:34,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:44:34,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:44:34,713 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:44:34,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:44:34,715 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:44:34,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:44:34,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:44:34,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:44:34,722 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:44:34,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:44:34,730 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:44:34,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:44:34,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:44:34,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:44:34,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:44:34,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:44:34,742 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:44:34,743 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:44:34,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:44:34,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:44:34,747 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:44:34,753 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 18:44:34,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:44:34,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:44:34,785 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:44:34,785 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:44:34,785 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:44:34,786 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:44:34,786 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:44:34,786 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:44:34,786 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:44:34,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:44:34,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:44:34,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:44:34,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:44:34,788 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:44:34,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:44:34,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:44:34,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:44:34,789 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:44:34,789 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:44:34,789 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:44:34,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:44:34,790 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:44:34,790 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:44:34,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:44:34,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:44:34,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:44:34,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:44:34,871 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:44:34,872 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-23 18:44:34,943 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0381496da/ed96ff3ffd1946ff8763f44e2f2b701b/FLAG762e21736 [2018-10-23 18:44:35,891 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:44:35,893 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-10-23 18:44:35,941 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0381496da/ed96ff3ffd1946ff8763f44e2f2b701b/FLAG762e21736 [2018-10-23 18:44:35,956 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0381496da/ed96ff3ffd1946ff8763f44e2f2b701b [2018-10-23 18:44:35,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:44:35,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:44:35,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:44:35,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:44:35,974 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:44:35,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:35" (1/1) ... [2018-10-23 18:44:35,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd5a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:35, skipping insertion in model container [2018-10-23 18:44:35,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:35" (1/1) ... [2018-10-23 18:44:35,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:44:36,259 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:44:38,251 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:44:38,257 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:44:39,326 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:44:39,392 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:44:39,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39 WrapperNode [2018-10-23 18:44:39,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:44:39,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:44:39,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:44:39,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:44:39,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:39,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:40,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:44:40,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:44:40,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:44:40,634 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:44:40,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:40,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:40,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:40,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:41,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:41,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:41,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (1/1) ... [2018-10-23 18:44:41,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:44:41,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:44:41,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:44:41,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:44:41,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (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 18:44:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:44:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:44:41,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:44:59,290 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:44:59,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:59 BoogieIcfgContainer [2018-10-23 18:44:59,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:44:59,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:44:59,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:44:59,299 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:44:59,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:35" (1/3) ... [2018-10-23 18:44:59,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735c0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:59, skipping insertion in model container [2018-10-23 18:44:59,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:39" (2/3) ... [2018-10-23 18:44:59,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735c0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:59, skipping insertion in model container [2018-10-23 18:44:59,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:59" (3/3) ... [2018-10-23 18:44:59,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-10-23 18:44:59,315 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:44:59,331 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:44:59,350 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:44:59,407 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:44:59,408 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:44:59,408 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:44:59,408 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:44:59,408 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:44:59,408 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:44:59,408 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:44:59,409 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:44:59,409 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:44:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:44:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-23 18:44:59,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:59,477 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] [2018-10-23 18:44:59,479 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:59,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-23 18:44:59,488 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:59,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:59,879 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 18:44:59,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:59,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:59,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:59,906 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:45:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:24,631 INFO L93 Difference]: Finished difference Result 6417 states and 12259 transitions. [2018-10-23 18:45:24,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:24,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-23 18:45:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:24,688 INFO L225 Difference]: With dead ends: 6417 [2018-10-23 18:45:24,688 INFO L226 Difference]: Without dead ends: 4661 [2018-10-23 18:45:24,699 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 18:45:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2018-10-23 18:45:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4580. [2018-10-23 18:45:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2018-10-23 18:45:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7862 transitions. [2018-10-23 18:45:24,929 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7862 transitions. Word has length 26 [2018-10-23 18:45:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:24,930 INFO L481 AbstractCegarLoop]: Abstraction has 4580 states and 7862 transitions. [2018-10-23 18:45:24,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7862 transitions. [2018-10-23 18:45:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 18:45:24,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:24,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:24,938 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:24,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:24,940 INFO L82 PathProgramCache]: Analyzing trace with hash 434309037, now seen corresponding path program 1 times [2018-10-23 18:45:24,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:24,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:24,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:24,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:24,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:45:25,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:25,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:45:25,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:45:25,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:45:25,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:25,231 INFO L87 Difference]: Start difference. First operand 4580 states and 7862 transitions. Second operand 4 states. [2018-10-23 18:45:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:49,213 INFO L93 Difference]: Finished difference Result 17614 states and 30529 transitions. [2018-10-23 18:45:49,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:49,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-23 18:45:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:49,282 INFO L225 Difference]: With dead ends: 17614 [2018-10-23 18:45:49,283 INFO L226 Difference]: Without dead ends: 13036 [2018-10-23 18:45:49,292 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 [2018-10-23 18:45:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2018-10-23 18:45:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 8676. [2018-10-23 18:45:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8676 states. [2018-10-23 18:45:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 12924 transitions. [2018-10-23 18:45:49,502 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 12924 transitions. Word has length 99 [2018-10-23 18:45:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:49,502 INFO L481 AbstractCegarLoop]: Abstraction has 8676 states and 12924 transitions. [2018-10-23 18:45:49,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 12924 transitions. [2018-10-23 18:45:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 18:45:49,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:49,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:49,508 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:49,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash -933456329, now seen corresponding path program 1 times [2018-10-23 18:45:49,508 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:49,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:49,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:49,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:49,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:45:49,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:49,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:45:49,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:45:49,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:45:49,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:49,818 INFO L87 Difference]: Start difference. First operand 8676 states and 12924 transitions. Second operand 4 states. [2018-10-23 18:46:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:16,030 INFO L93 Difference]: Finished difference Result 33963 states and 50758 transitions. [2018-10-23 18:46:16,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:46:16,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-23 18:46:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:16,107 INFO L225 Difference]: With dead ends: 33963 [2018-10-23 18:46:16,107 INFO L226 Difference]: Without dead ends: 25289 [2018-10-23 18:46:16,119 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 18:46:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2018-10-23 18:46:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 16867. [2018-10-23 18:46:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16867 states. [2018-10-23 18:46:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16867 states to 16867 states and 24055 transitions. [2018-10-23 18:46:16,455 INFO L78 Accepts]: Start accepts. Automaton has 16867 states and 24055 transitions. Word has length 109 [2018-10-23 18:46:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:16,455 INFO L481 AbstractCegarLoop]: Abstraction has 16867 states and 24055 transitions. [2018-10-23 18:46:16,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:46:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16867 states and 24055 transitions. [2018-10-23 18:46:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-23 18:46:16,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:16,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:16,467 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:16,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:16,468 INFO L82 PathProgramCache]: Analyzing trace with hash -369729876, now seen corresponding path program 1 times [2018-10-23 18:46:16,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:16,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:16,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:16,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:16,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:46:16,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:16,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:16,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:46:16,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:46:16,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:16,945 INFO L87 Difference]: Start difference. First operand 16867 states and 24055 transitions. Second operand 4 states. [2018-10-23 18:46:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:38,399 INFO L93 Difference]: Finished difference Result 65168 states and 93535 transitions. [2018-10-23 18:46:38,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:46:38,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-10-23 18:46:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:38,493 INFO L225 Difference]: With dead ends: 65168 [2018-10-23 18:46:38,494 INFO L226 Difference]: Without dead ends: 48303 [2018-10-23 18:46:38,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48303 states. [2018-10-23 18:46:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48303 to 48299. [2018-10-23 18:46:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48299 states. [2018-10-23 18:46:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48299 states to 48299 states and 62687 transitions. [2018-10-23 18:46:39,135 INFO L78 Accepts]: Start accepts. Automaton has 48299 states and 62687 transitions. Word has length 165 [2018-10-23 18:46:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:39,136 INFO L481 AbstractCegarLoop]: Abstraction has 48299 states and 62687 transitions. [2018-10-23 18:46:39,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:46:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 48299 states and 62687 transitions. [2018-10-23 18:46:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-23 18:46:39,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:39,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:39,138 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:39,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash 93489907, now seen corresponding path program 1 times [2018-10-23 18:46:39,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:39,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:39,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:39,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:39,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:46:39,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:39,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:39,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:46:39,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:46:39,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:39,500 INFO L87 Difference]: Start difference. First operand 48299 states and 62687 transitions. Second operand 4 states. [2018-10-23 18:47:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:47:02,610 INFO L93 Difference]: Finished difference Result 174574 states and 225586 transitions. [2018-10-23 18:47:02,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:47:02,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2018-10-23 18:47:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:47:02,817 INFO L225 Difference]: With dead ends: 174574 [2018-10-23 18:47:02,817 INFO L226 Difference]: Without dead ends: 126277 [2018-10-23 18:47:02,894 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 18:47:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126277 states. [2018-10-23 18:47:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126277 to 126229. [2018-10-23 18:47:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126229 states. [2018-10-23 18:47:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126229 states to 126229 states and 149650 transitions. [2018-10-23 18:47:04,837 INFO L78 Accepts]: Start accepts. Automaton has 126229 states and 149650 transitions. Word has length 185 [2018-10-23 18:47:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:47:04,838 INFO L481 AbstractCegarLoop]: Abstraction has 126229 states and 149650 transitions. [2018-10-23 18:47:04,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:47:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 126229 states and 149650 transitions. [2018-10-23 18:47:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-23 18:47:04,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:47:04,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:47:04,843 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:47:04,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:47:04,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1650992551, now seen corresponding path program 1 times [2018-10-23 18:47:04,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:47:04,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:47:04,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:04,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:47:04,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:47:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:47:05,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:47:05,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:47:05,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:47:05,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:47:05,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:47:05,128 INFO L87 Difference]: Start difference. First operand 126229 states and 149650 transitions. Second operand 3 states. [2018-10-23 18:47:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:47:17,318 INFO L93 Difference]: Finished difference Result 294807 states and 350651 transitions. [2018-10-23 18:47:17,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:47:17,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-10-23 18:47:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:47:17,525 INFO L225 Difference]: With dead ends: 294807 [2018-10-23 18:47:17,525 INFO L226 Difference]: Without dead ends: 165841 [2018-10-23 18:47:17,599 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 18:47:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165841 states. [2018-10-23 18:47:18,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165841 to 165836. [2018-10-23 18:47:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165836 states. [2018-10-23 18:47:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165836 states to 165836 states and 191022 transitions. [2018-10-23 18:47:18,953 INFO L78 Accepts]: Start accepts. Automaton has 165836 states and 191022 transitions. Word has length 234 [2018-10-23 18:47:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:47:18,954 INFO L481 AbstractCegarLoop]: Abstraction has 165836 states and 191022 transitions. [2018-10-23 18:47:18,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:47:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 165836 states and 191022 transitions. [2018-10-23 18:47:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-23 18:47:18,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:47:18,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:47:18,968 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:47:18,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:47:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1649658732, now seen corresponding path program 1 times [2018-10-23 18:47:18,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:47:18,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:47:18,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:18,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:47:18,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:47:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:47:19,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:47:19,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:47:19,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:47:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:47:19,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:47:19,551 INFO L87 Difference]: Start difference. First operand 165836 states and 191022 transitions. Second operand 4 states. [2018-10-23 18:47:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:47:39,936 INFO L93 Difference]: Finished difference Result 441050 states and 509427 transitions. [2018-10-23 18:47:39,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:47:39,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 514 [2018-10-23 18:47:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:47:40,263 INFO L225 Difference]: With dead ends: 441050 [2018-10-23 18:47:40,263 INFO L226 Difference]: Without dead ends: 276582 [2018-10-23 18:47:40,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:47:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276582 states. [2018-10-23 18:47:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276582 to 230038. [2018-10-23 18:47:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230038 states. [2018-10-23 18:47:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230038 states to 230038 states and 263128 transitions. [2018-10-23 18:47:42,535 INFO L78 Accepts]: Start accepts. Automaton has 230038 states and 263128 transitions. Word has length 514 [2018-10-23 18:47:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:47:42,536 INFO L481 AbstractCegarLoop]: Abstraction has 230038 states and 263128 transitions. [2018-10-23 18:47:42,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:47:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 230038 states and 263128 transitions. [2018-10-23 18:47:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-10-23 18:47:42,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:47:42,585 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:47:42,586 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:47:42,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:47:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash 555536538, now seen corresponding path program 1 times [2018-10-23 18:47:42,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:47:42,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:47:42,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:42,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:47:42,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:47:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:47:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-10-23 18:47:45,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:47:45,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:47:45,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:47:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:47:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:47:45,618 INFO L87 Difference]: Start difference. First operand 230038 states and 263128 transitions. Second operand 4 states. [2018-10-23 18:48:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:48:09,122 INFO L93 Difference]: Finished difference Result 457341 states and 523271 transitions. [2018-10-23 18:48:09,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:48:09,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 983 [2018-10-23 18:48:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:48:09,417 INFO L225 Difference]: With dead ends: 457341 [2018-10-23 18:48:09,417 INFO L226 Difference]: Without dead ends: 228671 [2018-10-23 18:48:09,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:48:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228671 states. [2018-10-23 18:48:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228671 to 217733. [2018-10-23 18:48:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217733 states. [2018-10-23 18:48:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217733 states to 217733 states and 237488 transitions. [2018-10-23 18:48:12,994 INFO L78 Accepts]: Start accepts. Automaton has 217733 states and 237488 transitions. Word has length 983 [2018-10-23 18:48:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:48:12,996 INFO L481 AbstractCegarLoop]: Abstraction has 217733 states and 237488 transitions. [2018-10-23 18:48:12,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:48:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 217733 states and 237488 transitions. [2018-10-23 18:48:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2018-10-23 18:48:13,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:48:13,044 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:13,044 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:48:13,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:48:13,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1457271870, now seen corresponding path program 1 times [2018-10-23 18:48:13,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:48:13,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:48:13,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:48:13,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:48:13,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:48:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:48:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 18:48:21,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:48:21,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:48:21,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:48:21,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:48:21,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:48:21,238 INFO L87 Difference]: Start difference. First operand 217733 states and 237488 transitions. Second operand 6 states. Received shutdown request... [2018-10-23 18:48:27,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:48:27,598 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:48:27,603 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:48:27,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:48:27 BoogieIcfgContainer [2018-10-23 18:48:27,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:48:27,605 INFO L168 Benchmark]: Toolchain (without parser) took 231636.90 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 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 904.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,606 INFO L168 Benchmark]: CDTParser took 0.24 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 18:48:27,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3422.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 1240.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,609 INFO L168 Benchmark]: Boogie Preprocessor took 709.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,610 INFO L168 Benchmark]: RCFGBuilder took 17948.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -387.3 MB). Peak memory consumption was 868.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,611 INFO L168 Benchmark]: TraceAbstraction took 208310.91 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 800.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:48:27,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3422.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1240.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 709.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17948.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -387.3 MB). Peak memory consumption was 868.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208310.91 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 800.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (217733states) and FLOYD_HOARE automaton (currently 5 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (11616 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 183.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12187 SDtfs, 31419 SDslu, 2788 SDs, 0 SdLazy, 63763 SolverSat, 18674 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 154.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230038occurred in iteration=7, 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: 10.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 70402 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 3358 NumberOfCodeBlocks, 3358 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3349 ConstructedInterpolants, 0 QuantifiedInterpolants, 4786502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1750/1750 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown