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/Problem17_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:25:45,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:25:45,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:25:45,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:25:45,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:25:45,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:25:45,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:25:45,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:25:45,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:25:45,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:25:45,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:25:45,842 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:25:45,843 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:25:45,844 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:25:45,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:25:45,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:25:45,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:25:45,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:25:45,850 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:25:45,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:25:45,853 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:25:45,854 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:25:45,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:25:45,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:25:45,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:25:45,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:25:45,859 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:25:45,860 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:25:45,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:25:45,862 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:25:45,862 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:25:45,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:25:45,865 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:25:45,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:25:45,885 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:25:45,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:25:45,887 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:25:45,888 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:25:45,890 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:25:45,890 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:25:45,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:25:45,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:25:45,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:25:45,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:25:45,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:25:45,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:25:45,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:25:45,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:25:45,893 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:25:45,893 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:25:45,893 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:25:45,893 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:25:45,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:25:45,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:25:45,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:25:45,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:25:45,895 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:25:45,895 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:25:45,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:25:45,896 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:25:45,896 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:25:45,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:25:45,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:25:45,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:25:45,984 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:25:45,984 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:25:45,985 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-10-23 18:25:46,041 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/743a3ce14/7a7c9ff54684435d9231200dbf3a7b55/FLAG808e7d5a9 [2018-10-23 18:25:46,737 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:25:46,738 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-10-23 18:25:46,762 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/743a3ce14/7a7c9ff54684435d9231200dbf3a7b55/FLAG808e7d5a9 [2018-10-23 18:25:46,778 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/743a3ce14/7a7c9ff54684435d9231200dbf3a7b55 [2018-10-23 18:25:46,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:25:46,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:25:46,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:25:46,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:25:46,796 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:25:46,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:46" (1/1) ... [2018-10-23 18:25:46,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31246533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:46, skipping insertion in model container [2018-10-23 18:25:46,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:46" (1/1) ... [2018-10-23 18:25:46,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:25:46,942 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:25:48,054 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:25:48,058 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:25:48,443 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:25:48,465 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:25:48,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48 WrapperNode [2018-10-23 18:25:48,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:25:48,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:25:48,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:25:48,467 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:25:48,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:48,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:25:49,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:25:49,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:25:49,032 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:25:49,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... [2018-10-23 18:25:49,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:25:49,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:25:49,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:25:49,272 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:25:49,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:25:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:25:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:25:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:25:58,544 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:25:58,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:58 BoogieIcfgContainer [2018-10-23 18:25:58,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:25:58,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:25:58,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:25:58,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:25:58,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:25:46" (1/3) ... [2018-10-23 18:25:58,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ec136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:58, skipping insertion in model container [2018-10-23 18:25:58,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:48" (2/3) ... [2018-10-23 18:25:58,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ec136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:58, skipping insertion in model container [2018-10-23 18:25:58,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:58" (3/3) ... [2018-10-23 18:25:58,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label26_false-unreach-call.c [2018-10-23 18:25:58,564 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:25:58,573 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:25:58,591 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:25:58,634 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:25:58,635 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:25:58,635 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:25:58,635 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:25:58,635 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:25:58,635 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:25:58,635 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:25:58,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:25:58,636 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:25:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:25:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 18:25:58,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:58,676 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:25:58,678 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:58,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1827210562, now seen corresponding path program 1 times [2018-10-23 18:25:58,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:58,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:58,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:58,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:58,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:25:59,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:25:59,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:25:59,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:25:59,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:25:59,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:25:59,158 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:26:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:12,565 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-23 18:26:12,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:26:12,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-23 18:26:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:12,607 INFO L225 Difference]: With dead ends: 2122 [2018-10-23 18:26:12,607 INFO L226 Difference]: Without dead ends: 1524 [2018-10-23 18:26:12,614 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 [2018-10-23 18:26:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-23 18:26:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-23 18:26:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-23 18:26:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-23 18:26:12,739 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 29 [2018-10-23 18:26:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:12,739 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-23 18:26:12,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:26:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-23 18:26:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 18:26:12,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:12,744 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:12,745 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:12,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 896281312, now seen corresponding path program 1 times [2018-10-23 18:26:12,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:12,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:12,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:12,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:12,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:13,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:26:13,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:26:13,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:26:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:26:13,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:13,049 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-23 18:26:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:25,399 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-23 18:26:25,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:26:25,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-23 18:26:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:25,423 INFO L225 Difference]: With dead ends: 5604 [2018-10-23 18:26:25,423 INFO L226 Difference]: Without dead ends: 4109 [2018-10-23 18:26:25,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-23 18:26:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-23 18:26:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-23 18:26:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-23 18:26:25,507 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 104 [2018-10-23 18:26:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-23 18:26:25,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:26:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-23 18:26:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-23 18:26:25,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:25,519 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:25,519 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:25,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1202250733, now seen corresponding path program 1 times [2018-10-23 18:26:25,519 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:25,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:25,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:25,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:25,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:25,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:26:25,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:26:25,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:26:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:26:25,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:25,892 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-23 18:26:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:32,768 INFO L93 Difference]: Finished difference Result 15443 states and 23002 transitions. [2018-10-23 18:26:32,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:26:32,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-23 18:26:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:32,818 INFO L225 Difference]: With dead ends: 15443 [2018-10-23 18:26:32,819 INFO L226 Difference]: Without dead ends: 11347 [2018-10-23 18:26:32,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2018-10-23 18:26:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11347. [2018-10-23 18:26:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11347 states. [2018-10-23 18:26:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 14546 transitions. [2018-10-23 18:26:33,021 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 14546 transitions. Word has length 167 [2018-10-23 18:26:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:33,022 INFO L481 AbstractCegarLoop]: Abstraction has 11347 states and 14546 transitions. [2018-10-23 18:26:33,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:26:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 14546 transitions. [2018-10-23 18:26:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 18:26:33,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:33,028 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:26:33,029 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:33,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:33,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1007255592, now seen corresponding path program 1 times [2018-10-23 18:26:33,030 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:33,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:33,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:33,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:33,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:33,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:26:33,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:26:33,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:26:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:26:33,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:33,435 INFO L87 Difference]: Start difference. First operand 11347 states and 14546 transitions. Second operand 4 states. [2018-10-23 18:26:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:38,270 INFO L93 Difference]: Finished difference Result 23544 states and 30340 transitions. [2018-10-23 18:26:38,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:26:38,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-10-23 18:26:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:38,314 INFO L225 Difference]: With dead ends: 23544 [2018-10-23 18:26:38,314 INFO L226 Difference]: Without dead ends: 12199 [2018-10-23 18:26:38,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:26:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2018-10-23 18:26:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 12199. [2018-10-23 18:26:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12199 states. [2018-10-23 18:26:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 14547 transitions. [2018-10-23 18:26:38,672 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 14547 transitions. Word has length 192 [2018-10-23 18:26:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:38,673 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 14547 transitions. [2018-10-23 18:26:38,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:26:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 14547 transitions. [2018-10-23 18:26:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-23 18:26:38,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:38,680 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:26:38,680 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:38,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1163909284, now seen corresponding path program 1 times [2018-10-23 18:26:38,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:38,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:38,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:38,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:38,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:39,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:26:39,285 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:26:39,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:39,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:26:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:26:39,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:26:39,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 18:26:39,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:26:39,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:26:39,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:26:39,781 INFO L87 Difference]: Start difference. First operand 12199 states and 14547 transitions. Second operand 7 states. [2018-10-23 18:26:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:26:57,101 INFO L93 Difference]: Finished difference Result 37706 states and 45491 transitions. [2018-10-23 18:26:57,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 18:26:57,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-10-23 18:26:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:26:57,141 INFO L225 Difference]: With dead ends: 37706 [2018-10-23 18:26:57,141 INFO L226 Difference]: Without dead ends: 21179 [2018-10-23 18:26:57,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:26:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-23 18:26:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 18151. [2018-10-23 18:26:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18151 states. [2018-10-23 18:26:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18151 states to 18151 states and 20399 transitions. [2018-10-23 18:26:57,473 INFO L78 Accepts]: Start accepts. Automaton has 18151 states and 20399 transitions. Word has length 251 [2018-10-23 18:26:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:26:57,475 INFO L481 AbstractCegarLoop]: Abstraction has 18151 states and 20399 transitions. [2018-10-23 18:26:57,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:26:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18151 states and 20399 transitions. [2018-10-23 18:26:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-23 18:26:57,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:26:57,485 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:26:57,485 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:26:57,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:26:57,485 INFO L82 PathProgramCache]: Analyzing trace with hash -743069123, now seen corresponding path program 1 times [2018-10-23 18:26:57,486 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:26:57,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:26:57,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:57,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:57,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:26:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:58,265 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 18:26:58,592 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 18:26:58,830 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 18:26:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-23 18:26:59,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:26:59,029 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:26:59,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:26:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:26:59,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:26:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-23 18:26:59,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:26:59,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-23 18:26:59,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:26:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:26:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:26:59,736 INFO L87 Difference]: Start difference. First operand 18151 states and 20399 transitions. Second operand 9 states. [2018-10-23 18:27:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:10,806 INFO L93 Difference]: Finished difference Result 38007 states and 42625 transitions. [2018-10-23 18:27:10,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:27:10,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 344 [2018-10-23 18:27:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:10,844 INFO L225 Difference]: With dead ends: 38007 [2018-10-23 18:27:10,844 INFO L226 Difference]: Without dead ends: 20287 [2018-10-23 18:27:10,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:27:10,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2018-10-23 18:27:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 19855. [2018-10-23 18:27:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19855 states. [2018-10-23 18:27:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 22191 transitions. [2018-10-23 18:27:11,106 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 22191 transitions. Word has length 344 [2018-10-23 18:27:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:11,107 INFO L481 AbstractCegarLoop]: Abstraction has 19855 states and 22191 transitions. [2018-10-23 18:27:11,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:27:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 22191 transitions. [2018-10-23 18:27:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-23 18:27:11,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:11,122 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:11,122 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:11,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -374062056, now seen corresponding path program 1 times [2018-10-23 18:27:11,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:11,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:11,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:11,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:11,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 80 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:12,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:27:12,467 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:27:12,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:12,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:27:12,893 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2018-10-23 18:27:13,378 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2018-10-23 18:27:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 80 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:14,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:27:14,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-23 18:27:14,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:27:14,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:27:14,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:27:14,435 INFO L87 Difference]: Start difference. First operand 19855 states and 22191 transitions. Second operand 8 states. [2018-10-23 18:27:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:31,801 INFO L93 Difference]: Finished difference Result 63747 states and 71674 transitions. [2018-10-23 18:27:31,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 18:27:31,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 396 [2018-10-23 18:27:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:31,868 INFO L225 Difference]: With dead ends: 63747 [2018-10-23 18:27:31,868 INFO L226 Difference]: Without dead ends: 42619 [2018-10-23 18:27:31,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:27:31,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42619 states. [2018-10-23 18:27:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42619 to 37362. [2018-10-23 18:27:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37362 states. [2018-10-23 18:27:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37362 states to 37362 states and 41921 transitions. [2018-10-23 18:27:32,383 INFO L78 Accepts]: Start accepts. Automaton has 37362 states and 41921 transitions. Word has length 396 [2018-10-23 18:27:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:32,384 INFO L481 AbstractCegarLoop]: Abstraction has 37362 states and 41921 transitions. [2018-10-23 18:27:32,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:27:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37362 states and 41921 transitions. [2018-10-23 18:27:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-23 18:27:32,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:32,400 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:32,400 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:32,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:32,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1822851898, now seen corresponding path program 1 times [2018-10-23 18:27:32,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:32,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:32,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:32,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:32,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 80 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:33,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:27:33,047 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 [2018-10-23 18:27:33,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:33,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:27:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-10-23 18:27:33,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:27:33,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:27:33,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:27:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:27:33,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:27:33,505 INFO L87 Difference]: Start difference. First operand 37362 states and 41921 transitions. Second operand 7 states. [2018-10-23 18:27:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:27:53,138 INFO L93 Difference]: Finished difference Result 110998 states and 125773 transitions. [2018-10-23 18:27:53,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 18:27:53,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2018-10-23 18:27:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:27:53,220 INFO L225 Difference]: With dead ends: 110998 [2018-10-23 18:27:53,221 INFO L226 Difference]: Without dead ends: 64608 [2018-10-23 18:27:53,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:27:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64608 states. [2018-10-23 18:27:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64608 to 44085. [2018-10-23 18:27:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44085 states. [2018-10-23 18:27:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44085 states to 44085 states and 48181 transitions. [2018-10-23 18:27:54,135 INFO L78 Accepts]: Start accepts. Automaton has 44085 states and 48181 transitions. Word has length 400 [2018-10-23 18:27:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:27:54,136 INFO L481 AbstractCegarLoop]: Abstraction has 44085 states and 48181 transitions. [2018-10-23 18:27:54,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:27:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 44085 states and 48181 transitions. [2018-10-23 18:27:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-23 18:27:54,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:54,150 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:54,151 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:54,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash 828926873, now seen corresponding path program 1 times [2018-10-23 18:27:54,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:54,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:54,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-23 18:27:54,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:27:54,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:27:54,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:27:54,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:27:54,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:54,713 INFO L87 Difference]: Start difference. First operand 44085 states and 48181 transitions. Second operand 4 states. [2018-10-23 18:28:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:00,017 INFO L93 Difference]: Finished difference Result 92853 states and 101745 transitions. [2018-10-23 18:28:00,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:00,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-23 18:28:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:00,073 INFO L225 Difference]: With dead ends: 92853 [2018-10-23 18:28:00,074 INFO L226 Difference]: Without dead ends: 53464 [2018-10-23 18:28:00,100 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 [2018-10-23 18:28:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53464 states. [2018-10-23 18:28:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53464 to 43219. [2018-10-23 18:28:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43219 states. [2018-10-23 18:28:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43219 states to 43219 states and 47179 transitions. [2018-10-23 18:28:00,576 INFO L78 Accepts]: Start accepts. Automaton has 43219 states and 47179 transitions. Word has length 400 [2018-10-23 18:28:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:00,576 INFO L481 AbstractCegarLoop]: Abstraction has 43219 states and 47179 transitions. [2018-10-23 18:28:00,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 43219 states and 47179 transitions. [2018-10-23 18:28:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-23 18:28:00,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:00,593 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:00,593 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:00,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash 958347253, now seen corresponding path program 1 times [2018-10-23 18:28:00,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:00,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:00,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:00,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:00,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 427 proven. 83 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-23 18:28:01,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:01,307 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:28:01,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:01,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:28:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-23 18:28:02,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:28:02,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-10-23 18:28:02,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:28:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:28:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:28:02,274 INFO L87 Difference]: Start difference. First operand 43219 states and 47179 transitions. Second operand 7 states. [2018-10-23 18:28:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:17,031 INFO L93 Difference]: Finished difference Result 122674 states and 133647 transitions. [2018-10-23 18:28:17,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:28:17,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2018-10-23 18:28:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:17,105 INFO L225 Difference]: With dead ends: 122674 [2018-10-23 18:28:17,105 INFO L226 Difference]: Without dead ends: 74746 [2018-10-23 18:28:17,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:28:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74746 states. [2018-10-23 18:28:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74746 to 63654. [2018-10-23 18:28:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63654 states. [2018-10-23 18:28:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63654 states to 63654 states and 67573 transitions. [2018-10-23 18:28:18,018 INFO L78 Accepts]: Start accepts. Automaton has 63654 states and 67573 transitions. Word has length 448 [2018-10-23 18:28:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:18,018 INFO L481 AbstractCegarLoop]: Abstraction has 63654 states and 67573 transitions. [2018-10-23 18:28:18,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:28:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 63654 states and 67573 transitions. [2018-10-23 18:28:18,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-23 18:28:18,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:18,033 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:18,033 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:18,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1172312242, now seen corresponding path program 1 times [2018-10-23 18:28:18,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:18,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:18,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:18,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:18,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:18,767 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 18:28:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 752 proven. 239 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-23 18:28:19,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:19,245 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:28:19,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:19,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:29:44,199 WARN L179 SmtUtils]: Spent 1.41 m on a formula simplification. DAG size of input: 134 DAG size of output: 108 Received shutdown request... [2018-10-23 18:29:57,101 WARN L187 SmtUtils]: Removed 17 from assertion stack [2018-10-23 18:29:57,101 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:29:57,302 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:29:57,303 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:29:57,307 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:29:57,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:29:57 BoogieIcfgContainer [2018-10-23 18:29:57,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:29:57,308 INFO L168 Benchmark]: Toolchain (without parser) took 250518.88 ms. Allocated memory was 1.6 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,309 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:29:57,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1674.67 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 564.20 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -924.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,311 INFO L168 Benchmark]: Boogie Preprocessor took 240.08 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,312 INFO L168 Benchmark]: RCFGBuilder took 9274.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.1 MB). Peak memory consumption was 484.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,313 INFO L168 Benchmark]: TraceAbstraction took 238761.14 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -821.2 MB). Peak memory consumption was 910.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:29:57,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1674.67 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 564.20 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -924.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 240.08 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9274.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.1 MB). Peak memory consumption was 484.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238761.14 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -821.2 MB). Peak memory consumption was 910.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 92). Cancelled while BasicCegarLoop was analyzing trace of length 527 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 426. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 238.6s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 123.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4165 SDtfs, 20078 SDslu, 3382 SDs, 0 SdLazy, 53409 SolverSat, 6807 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 108.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1896 GetRequests, 1844 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63654occurred in iteration=10, 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: 4.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 50615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 4570 NumberOfCodeBlocks, 4570 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4555 ConstructedInterpolants, 416 QuantifiedInterpolants, 10051980 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2427 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 3014/4315 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown