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_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:47:46,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:47:46,712 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:47:46,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:47:46,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:47:46,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:47:46,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:47:46,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:47:46,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:47:46,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:47:46,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:47:46,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:47:46,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:47:46,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:47:46,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:47:46,740 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:47:46,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:47:46,743 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:47:46,745 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:47:46,747 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:47:46,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:47:46,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:47:46,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:47:46,752 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:47:46,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:47:46,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:47:46,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:47:46,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:47:46,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:47:46,757 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:47:46,757 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:47:46,758 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:47:46,761 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:47:46,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:47:46,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:47:46,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:47:46,790 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:47:46,790 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:47:46,791 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:47:46,791 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:47:46,791 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:47:46,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:47:46,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:47:46,791 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:47:46,792 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:47:46,792 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:47:46,792 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:47:46,792 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:47:46,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:47:46,793 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:47:46,793 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:47:46,793 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:47:46,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:47:46,793 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:47:46,794 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:47:46,795 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:47:46,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:47:46,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:47:46,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:47:46,864 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:47:46,864 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:47:46,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-26 19:47:46,932 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4a910a29/d8b55ed6649f46439099178da7885a95/FLAGeb106008a [2018-10-26 19:47:47,816 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:47:47,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-26 19:47:47,866 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4a910a29/d8b55ed6649f46439099178da7885a95/FLAGeb106008a [2018-10-26 19:47:47,886 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4a910a29/d8b55ed6649f46439099178da7885a95 [2018-10-26 19:47:47,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:47:47,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:47:47,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:47:47,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:47:47,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:47:47,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:47:47" (1/1) ... [2018-10-26 19:47:47,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed858fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:47, skipping insertion in model container [2018-10-26 19:47:47,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:47:47" (1/1) ... [2018-10-26 19:47:47,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:47:48,207 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:47:50,113 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:47:50,118 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:47:51,285 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:47:51,340 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:47:51,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51 WrapperNode [2018-10-26 19:47:51,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:47:51,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:47:51,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:47:51,346 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:47:51,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:51,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:47:52,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:47:52,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:47:52,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:47:52,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:47:53,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:47:53,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:47:53,218 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:47:53,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:47:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:47:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:47:53,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:48:10,188 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:48:10,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:10 BoogieIcfgContainer [2018-10-26 19:48:10,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:48:10,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:48:10,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:48:10,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:48:10,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:47:47" (1/3) ... [2018-10-26 19:48:10,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c7a78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:10, skipping insertion in model container [2018-10-26 19:48:10,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (2/3) ... [2018-10-26 19:48:10,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c7a78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:10, skipping insertion in model container [2018-10-26 19:48:10,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:10" (3/3) ... [2018-10-26 19:48:10,201 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label22_false-unreach-call.c [2018-10-26 19:48:10,212 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:48:10,228 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:48:10,247 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:48:10,313 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:48:10,314 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:48:10,314 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:48:10,315 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:48:10,315 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:48:10,315 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:48:10,315 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:48:10,315 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:48:10,315 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:48:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 19:48:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 19:48:10,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:10,399 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:10,403 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:10,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-10-26 19:48:10,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:10,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:10,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:10,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:10,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:48:11,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:11,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:48:11,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:11,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:11,267 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 19:48:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:36,427 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-26 19:48:36,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:48:36,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 19:48:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:36,490 INFO L225 Difference]: With dead ends: 6326 [2018-10-26 19:48:36,491 INFO L226 Difference]: Without dead ends: 4570 [2018-10-26 19:48:36,503 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 [2018-10-26 19:48:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-26 19:48:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-26 19:48:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-26 19:48:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-26 19:48:36,722 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 30 [2018-10-26 19:48:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:36,723 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-26 19:48:36,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:48:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-26 19:48:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-26 19:48:36,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:36,733 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:36,734 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:36,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2106615927, now seen corresponding path program 1 times [2018-10-26 19:48:36,736 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:36,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:36,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:36,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:36,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:48:37,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:37,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:48:37,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:37,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:37,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:37,360 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-26 19:49:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:04,190 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-26 19:49:04,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:04,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-26 19:49:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:04,256 INFO L225 Difference]: With dead ends: 17552 [2018-10-26 19:49:04,256 INFO L226 Difference]: Without dead ends: 12990 [2018-10-26 19:49:04,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-26 19:49:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-26 19:49:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-26 19:49:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-26 19:49:04,445 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 134 [2018-10-26 19:49:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:04,446 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-26 19:49:04,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-26 19:49:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-26 19:49:04,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:04,450 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:04,450 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:04,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1024214355, now seen corresponding path program 1 times [2018-10-26 19:49:04,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:04,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:04,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:04,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:04,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:04,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:04,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:04,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:04,704 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-26 19:49:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:28,717 INFO L93 Difference]: Finished difference Result 33845 states and 54415 transitions. [2018-10-26 19:49:28,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:28,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-26 19:49:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:28,794 INFO L225 Difference]: With dead ends: 33845 [2018-10-26 19:49:28,794 INFO L226 Difference]: Without dead ends: 25181 [2018-10-26 19:49:28,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25181 states. [2018-10-26 19:49:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25181 to 25141. [2018-10-26 19:49:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25141 states. [2018-10-26 19:49:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25141 states to 25141 states and 35891 transitions. [2018-10-26 19:49:29,182 INFO L78 Accepts]: Start accepts. Automaton has 25141 states and 35891 transitions. Word has length 138 [2018-10-26 19:49:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:29,183 INFO L481 AbstractCegarLoop]: Abstraction has 25141 states and 35891 transitions. [2018-10-26 19:49:29,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25141 states and 35891 transitions. [2018-10-26 19:49:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-26 19:49:29,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:29,186 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:49:29,187 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:29,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:29,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2023606249, now seen corresponding path program 1 times [2018-10-26 19:49:29,187 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:29,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:29,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:29,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:29,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:29,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:29,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:29,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:29,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:29,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:29,528 INFO L87 Difference]: Start difference. First operand 25141 states and 35891 transitions. Second operand 4 states. [2018-10-26 19:49:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:48,593 INFO L93 Difference]: Finished difference Result 98401 states and 140793 transitions. [2018-10-26 19:49:48,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:48,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-10-26 19:49:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:48,772 INFO L225 Difference]: With dead ends: 98401 [2018-10-26 19:49:48,772 INFO L226 Difference]: Without dead ends: 73262 [2018-10-26 19:49:48,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73262 states. [2018-10-26 19:49:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73262 to 73242. [2018-10-26 19:49:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-10-26 19:49:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91791 transitions. [2018-10-26 19:49:49,705 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91791 transitions. Word has length 161 [2018-10-26 19:49:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:49,706 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 91791 transitions. [2018-10-26 19:49:49,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91791 transitions. [2018-10-26 19:49:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-26 19:49:49,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:49,712 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:49:49,712 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:49,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash -463791105, now seen corresponding path program 1 times [2018-10-26 19:49:49,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:49,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:49,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:49,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:50,210 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 19:49:50,741 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 19:49:50,944 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-26 19:49:51,156 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-10-26 19:49:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-26 19:49:51,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:51,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:49:51,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:49:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:49:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:49:51,440 INFO L87 Difference]: Start difference. First operand 73242 states and 91791 transitions. Second operand 7 states. [2018-10-26 19:50:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:29,290 INFO L93 Difference]: Finished difference Result 173816 states and 212368 transitions. [2018-10-26 19:50:29,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:50:29,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2018-10-26 19:50:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:29,408 INFO L225 Difference]: With dead ends: 173816 [2018-10-26 19:50:29,408 INFO L226 Difference]: Without dead ends: 100576 [2018-10-26 19:50:29,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:50:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100576 states. [2018-10-26 19:50:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100576 to 96472. [2018-10-26 19:50:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96472 states. [2018-10-26 19:50:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96472 states to 96472 states and 115798 transitions. [2018-10-26 19:50:30,359 INFO L78 Accepts]: Start accepts. Automaton has 96472 states and 115798 transitions. Word has length 399 [2018-10-26 19:50:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:30,360 INFO L481 AbstractCegarLoop]: Abstraction has 96472 states and 115798 transitions. [2018-10-26 19:50:30,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:50:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 96472 states and 115798 transitions. [2018-10-26 19:50:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-10-26 19:50:30,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:30,369 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:50:30,370 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:30,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1131351515, now seen corresponding path program 1 times [2018-10-26 19:50:30,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:30,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:30,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:30,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:30,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:50:30,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:30,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:50:30,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:50:30,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:50:30,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:50:30,738 INFO L87 Difference]: Start difference. First operand 96472 states and 115798 transitions. Second operand 4 states. [2018-10-26 19:50:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:52,098 INFO L93 Difference]: Finished difference Result 242130 states and 295751 transitions. [2018-10-26 19:50:52,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:50:52,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2018-10-26 19:50:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:52,262 INFO L225 Difference]: With dead ends: 242130 [2018-10-26 19:50:52,262 INFO L226 Difference]: Without dead ends: 145660 [2018-10-26 19:50:52,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:50:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145660 states. [2018-10-26 19:50:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145660 to 144283. [2018-10-26 19:50:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144283 states. [2018-10-26 19:50:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144283 states to 144283 states and 168832 transitions. [2018-10-26 19:50:53,590 INFO L78 Accepts]: Start accepts. Automaton has 144283 states and 168832 transitions. Word has length 427 [2018-10-26 19:50:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:53,591 INFO L481 AbstractCegarLoop]: Abstraction has 144283 states and 168832 transitions. [2018-10-26 19:50:53,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:50:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 144283 states and 168832 transitions. [2018-10-26 19:50:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-10-26 19:50:54,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:54,589 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:50:54,589 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:54,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1473549646, now seen corresponding path program 1 times [2018-10-26 19:50:54,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:54,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:54,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:54,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:54,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 19:50:55,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:55,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:50:55,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:50:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:50:55,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:50:55,473 INFO L87 Difference]: Start difference. First operand 144283 states and 168832 transitions. Second operand 4 states. [2018-10-26 19:51:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:51:10,559 INFO L93 Difference]: Finished difference Result 288567 states and 337671 transitions. [2018-10-26 19:51:10,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:51:10,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 885 [2018-10-26 19:51:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:51:10,732 INFO L225 Difference]: With dead ends: 288567 [2018-10-26 19:51:10,732 INFO L226 Difference]: Without dead ends: 144286 [2018-10-26 19:51:10,805 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 [2018-10-26 19:51:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144286 states. [2018-10-26 19:51:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144286 to 133347. [2018-10-26 19:51:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133347 states. [2018-10-26 19:51:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133347 states to 133347 states and 148760 transitions. [2018-10-26 19:51:11,927 INFO L78 Accepts]: Start accepts. Automaton has 133347 states and 148760 transitions. Word has length 885 [2018-10-26 19:51:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:51:11,928 INFO L481 AbstractCegarLoop]: Abstraction has 133347 states and 148760 transitions. [2018-10-26 19:51:11,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:51:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 133347 states and 148760 transitions. [2018-10-26 19:51:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2018-10-26 19:51:11,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:51:11,944 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:51:11,944 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:51:11,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:51:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1654264730, now seen corresponding path program 1 times [2018-10-26 19:51:11,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:51:11,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:51:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:11,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-26 19:51:14,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:51:14,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:51:14,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:51:14,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:51:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:51:14,188 INFO L87 Difference]: Start difference. First operand 133347 states and 148760 transitions. Second operand 4 states. [2018-10-26 19:51:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:51:36,559 INFO L93 Difference]: Finished difference Result 434850 states and 485475 transitions. [2018-10-26 19:51:36,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:51:36,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 903 [2018-10-26 19:51:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:51:36,936 INFO L225 Difference]: With dead ends: 434850 [2018-10-26 19:51:36,937 INFO L226 Difference]: Without dead ends: 290573 [2018-10-26 19:51:37,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:51:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290573 states. [2018-10-26 19:51:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290573 to 282226. [2018-10-26 19:51:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282226 states. [2018-10-26 19:51:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282226 states to 282226 states and 309105 transitions. [2018-10-26 19:51:40,406 INFO L78 Accepts]: Start accepts. Automaton has 282226 states and 309105 transitions. Word has length 903 [2018-10-26 19:51:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:51:40,407 INFO L481 AbstractCegarLoop]: Abstraction has 282226 states and 309105 transitions. [2018-10-26 19:51:40,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:51:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 282226 states and 309105 transitions. [2018-10-26 19:51:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-26 19:51:40,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:51:40,430 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:51:40,430 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:51:40,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:51:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash -683705303, now seen corresponding path program 1 times [2018-10-26 19:51:40,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:51:40,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:51:40,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:40,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:40,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-26 19:51:43,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:51:43,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:51:43,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:51:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:51:43,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:51:43,564 INFO L87 Difference]: Start difference. First operand 282226 states and 309105 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:51:45,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:51:45,546 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:51:45,552 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:51:45,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:51:45 BoogieIcfgContainer [2018-10-26 19:51:45,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:51:45,553 INFO L168 Benchmark]: Toolchain (without parser) took 237651.62 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -42.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-26 19:51:45,554 INFO L168 Benchmark]: CDTParser took 0.28 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. [2018-10-26 19:51:45,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3434.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.0 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:45,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 1112.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 995.0 MB 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. [2018-10-26 19:51:45,557 INFO L168 Benchmark]: Boogie Preprocessor took 762.25 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:45,559 INFO L168 Benchmark]: RCFGBuilder took 16972.37 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 276.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 520.1 MB). Peak memory consumption was 796.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:45,561 INFO L168 Benchmark]: TraceAbstraction took 215361.79 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 795.3 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 82.4 MB). Peak memory consumption was 877.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:45,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 3434.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.0 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1112.17 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 995.0 MB 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 762.25 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16972.37 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 276.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 520.1 MB). Peak memory consumption was 796.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215361.79 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 795.3 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 82.4 MB). Peak memory consumption was 877.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (282226states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (4279 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 215.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 195.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9148 SDtfs, 31536 SDslu, 3838 SDs, 0 SdLazy, 86176 SolverSat, 18783 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 164.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282226occurred in iteration=8, 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: 8.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 29157 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 4147 NumberOfCodeBlocks, 4147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4138 ConstructedInterpolants, 0 QuantifiedInterpolants, 4749664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2488/2488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown