java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:04:42,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:04:42,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:04:42,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:04:42,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:04:42,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:04:42,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:04:42,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:04:42,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:04:42,609 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:04:42,610 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:04:42,610 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:04:42,611 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:04:42,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:04:42,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:04:42,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:04:42,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:04:42,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:04:42,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:04:42,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:04:42,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:04:42,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:04:42,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:04:42,626 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:04:42,627 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:04:42,628 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:04:42,629 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:04:42,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:04:42,630 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:04:42,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:04:42,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:04:42,633 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:04:42,635 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 14:04:42,650 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:04:42,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:04:42,651 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:04:42,652 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:04:42,652 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:04:42,652 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:04:42,653 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:04:42,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:04:42,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:04:42,653 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:04:42,653 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:04:42,654 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:04:42,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:04:42,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:04:42,654 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:04:42,654 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:04:42,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:04:42,655 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:04:42,655 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:04:42,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:04:42,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:04:42,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:04:42,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:04:42,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:04:42,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:04:42,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:04:42,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:04:42,657 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:04:42,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:04:42,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:04:42,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:04:42,723 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:04:42,723 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:04:42,724 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-10-24 14:04:42,792 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f1abe91/e62c5fe628ec48c3b54952240be1e9ed/FLAGeb3bda28f [2018-10-24 14:04:43,531 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:04:43,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-10-24 14:04:43,560 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f1abe91/e62c5fe628ec48c3b54952240be1e9ed/FLAGeb3bda28f [2018-10-24 14:04:43,579 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72f1abe91/e62c5fe628ec48c3b54952240be1e9ed [2018-10-24 14:04:43,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:04:43,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:04:43,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:43,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:04:43,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:04:43,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:43" (1/1) ... [2018-10-24 14:04:43,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:43, skipping insertion in model container [2018-10-24 14:04:43,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:43" (1/1) ... [2018-10-24 14:04:43,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:04:43,789 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:04:45,256 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:45,261 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:04:45,868 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:45,904 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:04:45,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45 WrapperNode [2018-10-24 14:04:45,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:45,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:45,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:04:45,911 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:04:45,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:45,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:46,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:04:46,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:04:46,537 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:04:46,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:46,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:04:46,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:04:46,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:04:46,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:04:46,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (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 14:04:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:04:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:04:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:04:55,460 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:04:55,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:55 BoogieIcfgContainer [2018-10-24 14:04:55,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:04:55,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:04:55,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:04:55,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:04:55,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:04:43" (1/3) ... [2018-10-24 14:04:55,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4d4b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:55, skipping insertion in model container [2018-10-24 14:04:55,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45" (2/3) ... [2018-10-24 14:04:55,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4d4b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:55, skipping insertion in model container [2018-10-24 14:04:55,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:55" (3/3) ... [2018-10-24 14:04:55,480 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label42_false-unreach-call.c [2018-10-24 14:04:55,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:04:55,503 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:04:55,521 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:04:55,566 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:04:55,567 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:04:55,567 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:04:55,567 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:04:55,567 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:04:55,567 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:04:55,567 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:04:55,568 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:04:55,568 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:04:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:04:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 14:04:55,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:55,613 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] [2018-10-24 14:04:55,616 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:55,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-24 14:04:55,627 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:55,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:55,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:55,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:55,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:56,007 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:04:56,014 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 14:04:56,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:56,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:56,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:56,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:56,043 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:05:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:08,557 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:05:08,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:08,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-24 14:05:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:08,605 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:05:08,605 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:05:08,614 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 14:05:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:05:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:05:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:05:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-24 14:05:08,777 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 27 [2018-10-24 14:05:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:08,778 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-24 14:05:08,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-24 14:05:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:05:08,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:08,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:08,786 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:08,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1432295350, now seen corresponding path program 1 times [2018-10-24 14:05:08,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:08,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:08,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:08,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:08,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:09,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:09,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:05:09,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:09,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:09,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:09,118 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-24 14:05:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:24,362 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-24 14:05:24,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:24,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:05:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:24,401 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 14:05:24,402 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 14:05:24,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 14:05:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 14:05:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 14:05:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10758 transitions. [2018-10-24 14:05:24,544 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10758 transitions. Word has length 99 [2018-10-24 14:05:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:24,545 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10758 transitions. [2018-10-24 14:05:24,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10758 transitions. [2018-10-24 14:05:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 14:05:24,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:24,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:24,554 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:24,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2098293481, now seen corresponding path program 1 times [2018-10-24 14:05:24,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:24,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:24,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:24,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:24,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:25,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:25,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:05:25,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:05:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:05:25,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:05:25,117 INFO L87 Difference]: Start difference. First operand 6832 states and 10758 transitions. Second operand 6 states. [2018-10-24 14:05:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:41,191 INFO L93 Difference]: Finished difference Result 15918 states and 24429 transitions. [2018-10-24 14:05:41,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:05:41,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-24 14:05:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:41,235 INFO L225 Difference]: With dead ends: 15918 [2018-10-24 14:05:41,236 INFO L226 Difference]: Without dead ends: 9088 [2018-10-24 14:05:41,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:05:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-24 14:05:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-24 14:05:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-24 14:05:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12919 transitions. [2018-10-24 14:05:41,596 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12919 transitions. Word has length 137 [2018-10-24 14:05:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 12919 transitions. [2018-10-24 14:05:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:05:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12919 transitions. [2018-10-24 14:05:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-24 14:05:41,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:41,601 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:05:41,601 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:41,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:41,602 INFO L82 PathProgramCache]: Analyzing trace with hash 323623673, now seen corresponding path program 1 times [2018-10-24 14:05:41,602 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:41,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:41,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:41,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:41,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:42,146 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:05:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:42,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:42,383 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 14:05:42,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:42,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:42,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:42,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 14:05:42,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:05:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:05:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:05:42,735 INFO L87 Difference]: Start difference. First operand 9088 states and 12919 transitions. Second operand 6 states. [2018-10-24 14:06:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:04,507 INFO L93 Difference]: Finished difference Result 43022 states and 63364 transitions. [2018-10-24 14:06:04,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:06:04,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-24 14:06:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:04,595 INFO L225 Difference]: With dead ends: 43022 [2018-10-24 14:06:04,595 INFO L226 Difference]: Without dead ends: 32429 [2018-10-24 14:06:04,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:06:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32429 states. [2018-10-24 14:06:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32429 to 15855. [2018-10-24 14:06:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-10-24 14:06:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 19326 transitions. [2018-10-24 14:06:05,053 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 19326 transitions. Word has length 209 [2018-10-24 14:06:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:05,053 INFO L481 AbstractCegarLoop]: Abstraction has 15855 states and 19326 transitions. [2018-10-24 14:06:05,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:06:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 19326 transitions. [2018-10-24 14:06:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-24 14:06:05,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:05,060 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:05,061 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:05,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash -711363662, now seen corresponding path program 1 times [2018-10-24 14:06:05,061 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:05,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:05,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:05,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:05,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 50 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:06:05,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:05,966 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 14:06:05,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:06,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 91 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:06:06,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:06:06,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-24 14:06:06,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:06:06,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:06:06,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:06:06,581 INFO L87 Difference]: Start difference. First operand 15855 states and 19326 transitions. Second operand 8 states. [2018-10-24 14:06:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:24,994 INFO L93 Difference]: Finished difference Result 45996 states and 57716 transitions. [2018-10-24 14:06:24,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:06:24,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2018-10-24 14:06:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:25,035 INFO L225 Difference]: With dead ends: 45996 [2018-10-24 14:06:25,035 INFO L226 Difference]: Without dead ends: 29390 [2018-10-24 14:06:25,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:06:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29390 states. [2018-10-24 14:06:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29390 to 26382. [2018-10-24 14:06:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26382 states. [2018-10-24 14:06:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26382 states to 26382 states and 32561 transitions. [2018-10-24 14:06:25,413 INFO L78 Accepts]: Start accepts. Automaton has 26382 states and 32561 transitions. Word has length 283 [2018-10-24 14:06:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:25,414 INFO L481 AbstractCegarLoop]: Abstraction has 26382 states and 32561 transitions. [2018-10-24 14:06:25,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:06:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 26382 states and 32561 transitions. [2018-10-24 14:06:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-24 14:06:25,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:25,420 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:06:25,420 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:25,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash -465517453, now seen corresponding path program 1 times [2018-10-24 14:06:25,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:25,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:25,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:25,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:25,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-24 14:06:25,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:25,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:06:25,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:06:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:06:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:25,868 INFO L87 Difference]: Start difference. First operand 26382 states and 32561 transitions. Second operand 3 states. [2018-10-24 14:06:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:32,070 INFO L93 Difference]: Finished difference Result 64794 states and 81555 transitions. [2018-10-24 14:06:32,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:06:32,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2018-10-24 14:06:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:32,117 INFO L225 Difference]: With dead ends: 64794 [2018-10-24 14:06:32,117 INFO L226 Difference]: Without dead ends: 39166 [2018-10-24 14:06:32,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 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 14:06:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39166 states. [2018-10-24 14:06:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39166 to 39166. [2018-10-24 14:06:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39166 states. [2018-10-24 14:06:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39166 states to 39166 states and 48595 transitions. [2018-10-24 14:06:32,613 INFO L78 Accepts]: Start accepts. Automaton has 39166 states and 48595 transitions. Word has length 306 [2018-10-24 14:06:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:32,614 INFO L481 AbstractCegarLoop]: Abstraction has 39166 states and 48595 transitions. [2018-10-24 14:06:32,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:06:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 39166 states and 48595 transitions. [2018-10-24 14:06:32,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-10-24 14:06:32,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:32,640 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:32,641 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:32,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:32,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1129100271, now seen corresponding path program 1 times [2018-10-24 14:06:32,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:32,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:32,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:32,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:32,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 14:06:33,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:33,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:33,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:06:33,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:06:33,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:33,565 INFO L87 Difference]: Start difference. First operand 39166 states and 48595 transitions. Second operand 5 states. [2018-10-24 14:06:47,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:47,609 INFO L93 Difference]: Finished difference Result 140785 states and 178815 transitions. [2018-10-24 14:06:47,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:47,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 538 [2018-10-24 14:06:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:47,748 INFO L225 Difference]: With dead ends: 140785 [2018-10-24 14:06:47,748 INFO L226 Difference]: Without dead ends: 102373 [2018-10-24 14:06:47,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102373 states. [2018-10-24 14:06:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102373 to 76805. [2018-10-24 14:06:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76805 states. [2018-10-24 14:06:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76805 states to 76805 states and 92090 transitions. [2018-10-24 14:06:48,863 INFO L78 Accepts]: Start accepts. Automaton has 76805 states and 92090 transitions. Word has length 538 [2018-10-24 14:06:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:48,865 INFO L481 AbstractCegarLoop]: Abstraction has 76805 states and 92090 transitions. [2018-10-24 14:06:48,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:06:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 76805 states and 92090 transitions. [2018-10-24 14:06:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-10-24 14:06:48,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:48,940 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:48,940 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:48,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2045635022, now seen corresponding path program 1 times [2018-10-24 14:06:48,941 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:48,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:48,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:48,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:48,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 74 proven. 8 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 14:06:50,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:50,485 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:06:50,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:50,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 14:06:51,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:06:51,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:06:51,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:51,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:51,004 INFO L87 Difference]: Start difference. First operand 76805 states and 92090 transitions. Second operand 4 states. [2018-10-24 14:06:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:58,692 INFO L93 Difference]: Finished difference Result 197304 states and 236919 transitions. [2018-10-24 14:06:58,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:06:58,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 673 [2018-10-24 14:06:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:58,823 INFO L225 Difference]: With dead ends: 197304 [2018-10-24 14:06:58,823 INFO L226 Difference]: Without dead ends: 121253 [2018-10-24 14:06:58,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 673 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 14:06:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121253 states. [2018-10-24 14:06:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121253 to 79061. [2018-10-24 14:06:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79061 states. [2018-10-24 14:06:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79061 states to 79061 states and 90652 transitions. [2018-10-24 14:06:59,920 INFO L78 Accepts]: Start accepts. Automaton has 79061 states and 90652 transitions. Word has length 673 [2018-10-24 14:06:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:59,921 INFO L481 AbstractCegarLoop]: Abstraction has 79061 states and 90652 transitions. [2018-10-24 14:06:59,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:06:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 79061 states and 90652 transitions. [2018-10-24 14:06:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-10-24 14:06:59,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:59,985 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:06:59,985 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:59,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1001829571, now seen corresponding path program 1 times [2018-10-24 14:06:59,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:59,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:59,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:59,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:59,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-24 14:07:00,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:00,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:00,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:07:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:07:00,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:00,545 INFO L87 Difference]: Start difference. First operand 79061 states and 90652 transitions. Second operand 3 states. [2018-10-24 14:07:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:05,853 INFO L93 Difference]: Finished difference Result 186696 states and 213909 transitions. [2018-10-24 14:07:05,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:07:05,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 743 [2018-10-24 14:07:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:05,971 INFO L225 Difference]: With dead ends: 186696 [2018-10-24 14:07:05,971 INFO L226 Difference]: Without dead ends: 108389 [2018-10-24 14:07:05,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108389 states. [2018-10-24 14:07:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108389 to 103877. [2018-10-24 14:07:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103877 states. [2018-10-24 14:07:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103877 states to 103877 states and 116442 transitions. [2018-10-24 14:07:06,962 INFO L78 Accepts]: Start accepts. Automaton has 103877 states and 116442 transitions. Word has length 743 [2018-10-24 14:07:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:06,962 INFO L481 AbstractCegarLoop]: Abstraction has 103877 states and 116442 transitions. [2018-10-24 14:07:06,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:07:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 103877 states and 116442 transitions. [2018-10-24 14:07:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-10-24 14:07:07,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:07,008 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:07,009 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:07,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:07,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1691473539, now seen corresponding path program 1 times [2018-10-24 14:07:07,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:07,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:07,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:07,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:07,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:07,525 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:07:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 14:07:07,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:07,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:07,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:07,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:07,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:07,734 INFO L87 Difference]: Start difference. First operand 103877 states and 116442 transitions. Second operand 4 states. [2018-10-24 14:07:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:14,756 INFO L93 Difference]: Finished difference Result 213768 states and 239157 transitions. [2018-10-24 14:07:14,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:07:14,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 771 [2018-10-24 14:07:14,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:14,893 INFO L225 Difference]: With dead ends: 213768 [2018-10-24 14:07:14,894 INFO L226 Difference]: Without dead ends: 110645 [2018-10-24 14:07:14,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:07:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110645 states. [2018-10-24 14:07:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110645 to 109893. [2018-10-24 14:07:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109893 states. [2018-10-24 14:07:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109893 states to 109893 states and 122175 transitions. [2018-10-24 14:07:15,868 INFO L78 Accepts]: Start accepts. Automaton has 109893 states and 122175 transitions. Word has length 771 [2018-10-24 14:07:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:15,868 INFO L481 AbstractCegarLoop]: Abstraction has 109893 states and 122175 transitions. [2018-10-24 14:07:15,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 109893 states and 122175 transitions. [2018-10-24 14:07:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-24 14:07:15,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:15,911 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:07:15,912 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:15,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash -164549747, now seen corresponding path program 1 times [2018-10-24 14:07:15,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:15,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:15,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:15,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:15,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 14:07:17,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:17,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:17,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:17,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:17,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:17,104 INFO L87 Difference]: Start difference. First operand 109893 states and 122175 transitions. Second operand 4 states. [2018-10-24 14:07:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:26,546 INFO L93 Difference]: Finished difference Result 219032 states and 243591 transitions. [2018-10-24 14:07:26,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:26,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2018-10-24 14:07:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:26,672 INFO L225 Difference]: With dead ends: 219032 [2018-10-24 14:07:26,672 INFO L226 Difference]: Without dead ends: 109893 [2018-10-24 14:07:26,725 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 14:07:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109893 states. [2018-10-24 14:07:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109893 to 106133. [2018-10-24 14:07:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106133 states. [2018-10-24 14:07:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106133 states to 106133 states and 114383 transitions. [2018-10-24 14:07:27,609 INFO L78 Accepts]: Start accepts. Automaton has 106133 states and 114383 transitions. Word has length 775 [2018-10-24 14:07:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:27,610 INFO L481 AbstractCegarLoop]: Abstraction has 106133 states and 114383 transitions. [2018-10-24 14:07:27,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 106133 states and 114383 transitions. [2018-10-24 14:07:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-10-24 14:07:27,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:27,642 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:07:27,643 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:27,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash -222630909, now seen corresponding path program 1 times [2018-10-24 14:07:27,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:27,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:27,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-10-24 14:07:29,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:29,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:29,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:29,154 INFO L87 Difference]: Start difference. First operand 106133 states and 114383 transitions. Second operand 4 states. [2018-10-24 14:07:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:37,035 INFO L93 Difference]: Finished difference Result 260390 states and 281816 transitions. [2018-10-24 14:07:37,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:37,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 804 [2018-10-24 14:07:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:37,200 INFO L225 Difference]: With dead ends: 260390 [2018-10-24 14:07:37,200 INFO L226 Difference]: Without dead ends: 155011 [2018-10-24 14:07:37,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155011 states. [2018-10-24 14:07:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155011 to 148995. [2018-10-24 14:07:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148995 states. [2018-10-24 14:07:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148995 states to 148995 states and 158309 transitions. [2018-10-24 14:07:39,205 INFO L78 Accepts]: Start accepts. Automaton has 148995 states and 158309 transitions. Word has length 804 [2018-10-24 14:07:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:39,206 INFO L481 AbstractCegarLoop]: Abstraction has 148995 states and 158309 transitions. [2018-10-24 14:07:39,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 148995 states and 158309 transitions. [2018-10-24 14:07:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2018-10-24 14:07:39,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:39,256 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:39,256 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:39,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1636925585, now seen corresponding path program 1 times [2018-10-24 14:07:39,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:39,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:39,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:39,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:39,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:40,224 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 14:07:40,424 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:07:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 511 proven. 25 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 14:07:43,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:07:43,020 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:07:43,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:43,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:07:43,588 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 14:07:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 511 proven. 25 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 14:07:46,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:07:46,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2018-10-24 14:07:46,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:07:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:07:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:07:46,022 INFO L87 Difference]: Start difference. First operand 148995 states and 158309 transitions. Second operand 10 states. [2018-10-24 14:08:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:22,583 INFO L93 Difference]: Finished difference Result 450610 states and 480153 transitions. [2018-10-24 14:08:22,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 14:08:22,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 879 [2018-10-24 14:08:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:23,718 INFO L225 Difference]: With dead ends: 450610 [2018-10-24 14:08:23,719 INFO L226 Difference]: Without dead ends: 298602 [2018-10-24 14:08:23,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 888 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2018-10-24 14:08:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298602 states. [2018-10-24 14:08:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298602 to 213659. [2018-10-24 14:08:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213659 states. [2018-10-24 14:08:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213659 states to 213659 states and 224346 transitions. [2018-10-24 14:08:28,015 INFO L78 Accepts]: Start accepts. Automaton has 213659 states and 224346 transitions. Word has length 879 [2018-10-24 14:08:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:28,016 INFO L481 AbstractCegarLoop]: Abstraction has 213659 states and 224346 transitions. [2018-10-24 14:08:28,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:08:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 213659 states and 224346 transitions. [2018-10-24 14:08:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2018-10-24 14:08:28,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:28,130 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:28,130 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:28,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash -369506190, now seen corresponding path program 1 times [2018-10-24 14:08:28,131 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:28,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:28,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:28,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:29,053 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:08:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 14:08:31,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:31,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:08:31,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:31,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:31,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:31,097 INFO L87 Difference]: Start difference. First operand 213659 states and 224346 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 14:08:32,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:32,604 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:08:32,609 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:08:32,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:08:32 BoogieIcfgContainer [2018-10-24 14:08:32,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:08:32,611 INFO L168 Benchmark]: Toolchain (without parser) took 229017.52 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 214.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,612 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:08:32,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2309.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 630.29 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 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 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,614 INFO L168 Benchmark]: Boogie Preprocessor took 339.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,615 INFO L168 Benchmark]: RCFGBuilder took 8584.25 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 215.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -158.7 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,616 INFO L168 Benchmark]: TraceAbstraction took 217147.76 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 803.7 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:32,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2309.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 630.29 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 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 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 339.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8584.25 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 215.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -158.7 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217147.76 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 803.7 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (213659states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (2580 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 217.0s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9070 SDtfs, 39770 SDslu, 1715 SDs, 0 SdLazy, 91014 SolverSat, 16593 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 147.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2150 GetRequests, 2070 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213659occurred in iteration=13, 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: 12.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 187325 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 9362 NumberOfCodeBlocks, 9362 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9344 ConstructedInterpolants, 0 QuantifiedInterpolants, 29074438 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2515 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 7542/7780 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown