java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:21:28,665 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:21:28,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:21:28,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:21:28,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:21:28,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:21:28,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:21:28,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:21:28,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:21:28,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:21:28,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:21:28,696 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:21:28,699 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:21:28,700 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:21:28,701 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:21:28,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:21:28,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:21:28,712 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:21:28,715 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:21:28,720 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:21:28,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:21:28,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:21:28,724 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:21:28,732 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:21:28,759 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:21:28,759 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:21:28,760 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:21:28,760 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:21:28,761 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:21:28,761 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:21:28,761 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:21:28,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:21:28,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:21:28,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:21:28,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:21:28,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:21:28,763 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:21:28,763 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:21:28,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:21:28,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:21:28,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:21:28,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:21:28,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:21:28,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:28,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:21:28,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:21:28,766 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:21:28,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:21:28,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:21:28,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:21:28,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:21:28,838 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:21:28,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-10-24 16:21:28,900 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b2961079/8e596985923b4e7682e04cb9d623adc7/FLAG4df29866f [2018-10-24 16:21:29,728 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:21:29,729 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-10-24 16:21:29,772 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b2961079/8e596985923b4e7682e04cb9d623adc7/FLAG4df29866f [2018-10-24 16:21:29,795 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b2961079/8e596985923b4e7682e04cb9d623adc7 [2018-10-24 16:21:29,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:21:29,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:21:29,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:29,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:21:29,818 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:21:29,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:29" (1/1) ... [2018-10-24 16:21:29,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:29, skipping insertion in model container [2018-10-24 16:21:29,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:29" (1/1) ... [2018-10-24 16:21:29,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:21:30,026 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:21:31,711 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:31,716 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:21:32,395 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:32,432 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:21:32,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32 WrapperNode [2018-10-24 16:21:32,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:32,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:32,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:21:32,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:21:32,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:32,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:33,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:21:33,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:21:33,317 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:21:33,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... [2018-10-24 16:21:33,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:21:33,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:21:33,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:21:33,736 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:21:33,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:21:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:21:33,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:21:47,327 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:21:47,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:47 BoogieIcfgContainer [2018-10-24 16:21:47,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:21:47,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:21:47,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:21:47,332 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:21:47,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:21:29" (1/3) ... [2018-10-24 16:21:47,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:47, skipping insertion in model container [2018-10-24 16:21:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:32" (2/3) ... [2018-10-24 16:21:47,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:47, skipping insertion in model container [2018-10-24 16:21:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:47" (3/3) ... [2018-10-24 16:21:47,336 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-10-24 16:21:47,347 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:21:47,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:21:47,377 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:21:47,422 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:21:47,423 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:21:47,423 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:21:47,424 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:21:47,424 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:21:47,424 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:21:47,424 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:21:47,424 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:21:47,424 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:21:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:21:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 16:21:47,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:47,476 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:47,479 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:47,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-10-24 16:21:47,488 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:47,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:47,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:47,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:47,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:21:48,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:48,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:48,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:48,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:48,067 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:22:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:02,838 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:22:02,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:02,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-24 16:22:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:02,888 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:22:02,888 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:22:02,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:22:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:22:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:22:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:22:03,064 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 56 [2018-10-24 16:22:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:03,065 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:22:03,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:22:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 16:22:03,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:03,077 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:22:03,077 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:03,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:03,077 INFO L82 PathProgramCache]: Analyzing trace with hash 288219290, now seen corresponding path program 1 times [2018-10-24 16:22:03,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:03,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:03,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:03,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:03,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:03,993 WARN L179 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:22:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:04,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:04,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:04,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:04,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:04,291 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:22:04,541 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:22:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:21,681 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:22:21,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:21,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 16:22:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:21,706 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:22:21,706 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:22:21,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:22:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:22:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:22:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:22:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:22:21,806 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 122 [2018-10-24 16:22:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:21,806 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:22:21,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:22:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 16:22:21,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:21,812 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:21,813 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:21,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1053925283, now seen corresponding path program 1 times [2018-10-24 16:22:21,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:21,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:21,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:21,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:21,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:22,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:22,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:22,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:22,030 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-10-24 16:22:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:27,656 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-10-24 16:22:27,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:27,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-24 16:22:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:27,685 INFO L225 Difference]: With dead ends: 10220 [2018-10-24 16:22:27,685 INFO L226 Difference]: Without dead ends: 5893 [2018-10-24 16:22:27,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-10-24 16:22:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-10-24 16:22:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-10-24 16:22:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-10-24 16:22:27,799 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 182 [2018-10-24 16:22:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:27,800 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-10-24 16:22:27,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-10-24 16:22:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 16:22:27,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:27,805 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:22:27,805 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:27,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:27,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1587297961, now seen corresponding path program 1 times [2018-10-24 16:22:27,806 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:27,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:27,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:27,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:27,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 107 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 16:22:28,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:28,199 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:22:28,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:28,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:28,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:28,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 16:22:28,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:28,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:28,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:28,426 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-10-24 16:22:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:41,551 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-10-24 16:22:41,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:41,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2018-10-24 16:22:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:41,616 INFO L225 Difference]: With dead ends: 20501 [2018-10-24 16:22:41,617 INFO L226 Difference]: Without dead ends: 15399 [2018-10-24 16:22:41,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-10-24 16:22:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-10-24 16:22:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-10-24 16:22:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-10-24 16:22:42,037 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 221 [2018-10-24 16:22:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:42,038 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-10-24 16:22:42,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-10-24 16:22:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-24 16:22:42,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:42,043 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:42,043 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:42,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2098995270, now seen corresponding path program 1 times [2018-10-24 16:22:42,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:42,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:42,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 16:22:42,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:42,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:22:42,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:42,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:42,325 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-10-24 16:22:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:47,630 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-10-24 16:22:47,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:47,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2018-10-24 16:22:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:47,677 INFO L225 Difference]: With dead ends: 28343 [2018-10-24 16:22:47,677 INFO L226 Difference]: Without dead ends: 18506 [2018-10-24 16:22:47,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-10-24 16:22:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-10-24 16:22:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-10-24 16:22:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-10-24 16:22:47,979 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 232 [2018-10-24 16:22:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:47,979 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-10-24 16:22:47,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-10-24 16:22:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 16:22:47,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:47,985 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:47,986 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:47,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash 672096469, now seen corresponding path program 1 times [2018-10-24 16:22:47,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:47,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:47,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:47,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:47,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:48,618 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 16:22:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:22:48,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:48,778 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:22:48,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:48,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:49,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:49,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:22:49,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:49,108 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 4 states. [2018-10-24 16:23:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:00,297 INFO L93 Difference]: Finished difference Result 44141 states and 51712 transitions. [2018-10-24 16:23:00,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:00,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-10-24 16:23:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:00,342 INFO L225 Difference]: With dead ends: 44141 [2018-10-24 16:23:00,342 INFO L226 Difference]: Without dead ends: 21648 [2018-10-24 16:23:00,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21648 states. [2018-10-24 16:23:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21648 to 19266. [2018-10-24 16:23:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19266 states. [2018-10-24 16:23:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19266 states to 19266 states and 22668 transitions. [2018-10-24 16:23:00,651 INFO L78 Accepts]: Start accepts. Automaton has 19266 states and 22668 transitions. Word has length 270 [2018-10-24 16:23:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:00,652 INFO L481 AbstractCegarLoop]: Abstraction has 19266 states and 22668 transitions. [2018-10-24 16:23:00,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19266 states and 22668 transitions. [2018-10-24 16:23:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-24 16:23:00,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:00,659 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:00,659 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:00,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:00,660 INFO L82 PathProgramCache]: Analyzing trace with hash -600084436, now seen corresponding path program 1 times [2018-10-24 16:23:00,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:00,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:01,088 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:23:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:23:01,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:01,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:01,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:01,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:01,259 INFO L87 Difference]: Start difference. First operand 19266 states and 22668 transitions. Second operand 4 states. [2018-10-24 16:23:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:12,702 INFO L93 Difference]: Finished difference Result 41683 states and 48797 transitions. [2018-10-24 16:23:12,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:12,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2018-10-24 16:23:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:12,738 INFO L225 Difference]: With dead ends: 41683 [2018-10-24 16:23:12,738 INFO L226 Difference]: Without dead ends: 21594 [2018-10-24 16:23:12,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2018-10-24 16:23:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 19229. [2018-10-24 16:23:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19229 states. [2018-10-24 16:23:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19229 states to 19229 states and 22239 transitions. [2018-10-24 16:23:13,001 INFO L78 Accepts]: Start accepts. Automaton has 19229 states and 22239 transitions. Word has length 299 [2018-10-24 16:23:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:13,002 INFO L481 AbstractCegarLoop]: Abstraction has 19229 states and 22239 transitions. [2018-10-24 16:23:13,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 19229 states and 22239 transitions. [2018-10-24 16:23:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-24 16:23:13,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:13,008 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:13,009 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:13,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1288075007, now seen corresponding path program 1 times [2018-10-24 16:23:13,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:13,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:13,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:13,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:13,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 16:23:13,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:13,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:13,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:13,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:13,433 INFO L87 Difference]: Start difference. First operand 19229 states and 22239 transitions. Second operand 4 states. [2018-10-24 16:23:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:23,530 INFO L93 Difference]: Finished difference Result 68437 states and 79694 transitions. [2018-10-24 16:23:23,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:23,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-10-24 16:23:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:23,586 INFO L225 Difference]: With dead ends: 68437 [2018-10-24 16:23:23,586 INFO L226 Difference]: Without dead ends: 49206 [2018-10-24 16:23:23,601 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 [2018-10-24 16:23:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49206 states. [2018-10-24 16:23:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49206 to 47597. [2018-10-24 16:23:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47597 states. [2018-10-24 16:23:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47597 states to 47597 states and 53239 transitions. [2018-10-24 16:23:24,127 INFO L78 Accepts]: Start accepts. Automaton has 47597 states and 53239 transitions. Word has length 304 [2018-10-24 16:23:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:24,127 INFO L481 AbstractCegarLoop]: Abstraction has 47597 states and 53239 transitions. [2018-10-24 16:23:24,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 47597 states and 53239 transitions. [2018-10-24 16:23:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-24 16:23:24,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:24,134 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:24,134 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:24,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1847589293, now seen corresponding path program 1 times [2018-10-24 16:23:24,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:24,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:24,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:24,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:24,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 16:23:24,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:24,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:24,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:24,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:24,425 INFO L87 Difference]: Start difference. First operand 47597 states and 53239 transitions. Second operand 5 states. [2018-10-24 16:23:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:43,364 INFO L93 Difference]: Finished difference Result 184491 states and 206663 transitions. [2018-10-24 16:23:43,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:43,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2018-10-24 16:23:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:43,523 INFO L225 Difference]: With dead ends: 184491 [2018-10-24 16:23:43,523 INFO L226 Difference]: Without dead ends: 137681 [2018-10-24 16:23:43,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137681 states. [2018-10-24 16:23:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137681 to 128844. [2018-10-24 16:23:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128844 states. [2018-10-24 16:23:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128844 states to 128844 states and 141794 transitions. [2018-10-24 16:23:44,717 INFO L78 Accepts]: Start accepts. Automaton has 128844 states and 141794 transitions. Word has length 343 [2018-10-24 16:23:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:44,717 INFO L481 AbstractCegarLoop]: Abstraction has 128844 states and 141794 transitions. [2018-10-24 16:23:44,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:23:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 128844 states and 141794 transitions. [2018-10-24 16:23:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-24 16:23:44,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:44,724 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:44,724 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:44,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash -127508777, now seen corresponding path program 1 times [2018-10-24 16:23:44,725 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:44,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:44,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:44,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:44,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-24 16:23:45,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:45,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:45,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:23:45,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:23:45,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:23:45,176 INFO L87 Difference]: Start difference. First operand 128844 states and 141794 transitions. Second operand 3 states. [2018-10-24 16:23:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:52,017 INFO L93 Difference]: Finished difference Result 256897 states and 282795 transitions. [2018-10-24 16:23:52,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:23:52,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-10-24 16:23:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:52,203 INFO L225 Difference]: With dead ends: 256897 [2018-10-24 16:23:52,203 INFO L226 Difference]: Without dead ends: 128843 [2018-10-24 16:23:52,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:23:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128843 states. [2018-10-24 16:23:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128843 to 128842. [2018-10-24 16:23:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128842 states. [2018-10-24 16:23:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128842 states to 128842 states and 138637 transitions. [2018-10-24 16:23:53,712 INFO L78 Accepts]: Start accepts. Automaton has 128842 states and 138637 transitions. Word has length 412 [2018-10-24 16:23:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:53,713 INFO L481 AbstractCegarLoop]: Abstraction has 128842 states and 138637 transitions. [2018-10-24 16:23:53,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:23:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 128842 states and 138637 transitions. [2018-10-24 16:23:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-10-24 16:23:53,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:53,720 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:53,720 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:53,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1293478592, now seen corresponding path program 1 times [2018-10-24 16:23:53,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:53,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:53,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:53,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:53,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 16:23:54,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:54,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:54,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:54,192 INFO L87 Difference]: Start difference. First operand 128842 states and 138637 transitions. Second operand 4 states. [2018-10-24 16:24:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:07,439 INFO L93 Difference]: Finished difference Result 325484 states and 350775 transitions. [2018-10-24 16:24:07,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:07,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 441 [2018-10-24 16:24:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:07,730 INFO L225 Difference]: With dead ends: 325484 [2018-10-24 16:24:07,730 INFO L226 Difference]: Without dead ends: 195851 [2018-10-24 16:24:07,842 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 [2018-10-24 16:24:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195851 states. [2018-10-24 16:24:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195851 to 185563. [2018-10-24 16:24:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185563 states. [2018-10-24 16:24:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185563 states to 185563 states and 197486 transitions. [2018-10-24 16:24:11,100 INFO L78 Accepts]: Start accepts. Automaton has 185563 states and 197486 transitions. Word has length 441 [2018-10-24 16:24:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:11,101 INFO L481 AbstractCegarLoop]: Abstraction has 185563 states and 197486 transitions. [2018-10-24 16:24:11,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 185563 states and 197486 transitions. [2018-10-24 16:24:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-10-24 16:24:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:11,187 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:11,187 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:11,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:11,188 INFO L82 PathProgramCache]: Analyzing trace with hash -198333616, now seen corresponding path program 1 times [2018-10-24 16:24:11,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:11,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:11,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:11,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:11,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2018-10-24 16:24:12,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:12,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:24:12,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:12,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:12,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:12,139 INFO L87 Difference]: Start difference. First operand 185563 states and 197486 transitions. Second operand 5 states. [2018-10-24 16:24:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:35,154 INFO L93 Difference]: Finished difference Result 470598 states and 500906 transitions. [2018-10-24 16:24:35,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:35,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 825 [2018-10-24 16:24:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:35,548 INFO L225 Difference]: With dead ends: 470598 [2018-10-24 16:24:35,548 INFO L226 Difference]: Without dead ends: 285825 [2018-10-24 16:24:35,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285825 states. [2018-10-24 16:24:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285825 to 258085. [2018-10-24 16:24:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258085 states. [2018-10-24 16:24:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258085 states to 258085 states and 272359 transitions. [2018-10-24 16:24:40,008 INFO L78 Accepts]: Start accepts. Automaton has 258085 states and 272359 transitions. Word has length 825 [2018-10-24 16:24:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:40,009 INFO L481 AbstractCegarLoop]: Abstraction has 258085 states and 272359 transitions. [2018-10-24 16:24:40,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 258085 states and 272359 transitions. [2018-10-24 16:24:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1328 [2018-10-24 16:24:40,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:40,161 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:40,161 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:40,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:40,162 INFO L82 PathProgramCache]: Analyzing trace with hash 402418026, now seen corresponding path program 1 times [2018-10-24 16:24:40,162 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:40,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:40,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:40,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:40,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 769 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2018-10-24 16:24:49,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:49,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:49,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:49,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:49,483 INFO L87 Difference]: Start difference. First operand 258085 states and 272359 transitions. Second operand 4 states. [2018-10-24 16:25:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:01,303 INFO L93 Difference]: Finished difference Result 509819 states and 538151 transitions. [2018-10-24 16:25:01,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:01,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1327 [2018-10-24 16:25:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:01,304 INFO L225 Difference]: With dead ends: 509819 [2018-10-24 16:25:01,304 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:25:01,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:25:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:25:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:25:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:25:01,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1327 [2018-10-24 16:25:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:01,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:25:01,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:25:01,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:25:01,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:25:01,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,805 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,851 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:01,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,291 WARN L179 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 169 [2018-10-24 16:25:02,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:02,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,097 WARN L179 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 169 [2018-10-24 16:25:03,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,475 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:03,838 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 169 [2018-10-24 16:25:04,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,249 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,577 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 169 [2018-10-24 16:25:04,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,886 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:04,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:05,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:25:05,175 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 169 Received shutdown request... [2018-10-24 16:25:09,150 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-10-24 16:25:09,150 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:25:09,151 INFO L168 Benchmark]: Toolchain (without parser) took 219342.46 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,152 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:25:09,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2620.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 881.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,155 INFO L168 Benchmark]: Boogie Preprocessor took 418.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,157 INFO L168 Benchmark]: RCFGBuilder took 13592.28 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 248.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 604.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,159 INFO L168 Benchmark]: TraceAbstraction took 201821.92 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:09,166 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2620.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 881.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 418.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13592.28 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 248.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 604.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201821.92 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 177]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 163. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown