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/loops/sum04_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:39:31,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:39:31,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:39:31,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:39:31,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:39:31,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:39:31,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:39:31,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:39:31,674 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:39:31,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:39:31,675 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:39:31,676 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:39:31,676 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:39:31,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:39:31,679 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:39:31,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:39:31,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:39:31,682 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:39:31,684 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:39:31,686 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:39:31,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:39:31,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:39:31,691 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 15:39:31,691 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 15:39:31,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 15:39:31,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 15:39:31,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 15:39:31,694 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 15:39:31,695 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 15:39:31,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 15:39:31,696 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 15:39:31,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 15:39:31,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 15:39:31,698 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 15:39:31,699 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 15:39:31,699 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 15:39:31,700 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 [2018-10-22 15:39:31,728 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:39:31,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:39:31,729 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:39:31,730 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:39:31,730 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:39:31,730 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:39:31,731 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:39:31,731 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:39:31,731 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:39:31,731 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:39:31,731 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:39:31,732 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:39:31,733 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:39:31,733 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:39:31,733 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:39:31,734 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:39:31,734 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:39:31,734 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:39:31,734 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:39:31,734 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:39:31,735 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:39:31,736 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:39:31,736 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:39:31,736 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:39:31,737 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:39:31,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:39:31,737 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:39:31,737 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:39:31,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:39:31,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:39:31,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:39:31,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:39:31,826 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:39:31,827 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum04_true-unreach-call_true-termination.i [2018-10-22 15:39:31,895 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5971e60c/6101ba7680954d7abd52225ae646306c/FLAG958d6634c [2018-10-22 15:39:32,345 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:39:32,346 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04_true-unreach-call_true-termination.i [2018-10-22 15:39:32,352 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5971e60c/6101ba7680954d7abd52225ae646306c/FLAG958d6634c [2018-10-22 15:39:32,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5971e60c/6101ba7680954d7abd52225ae646306c [2018-10-22 15:39:32,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:39:32,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:39:32,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:39:32,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:39:32,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:39:32,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3236d4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32, skipping insertion in model container [2018-10-22 15:39:32,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:39:32,427 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:39:32,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:39:32,623 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:39:32,639 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:39:32,654 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:39:32,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32 WrapperNode [2018-10-22 15:39:32,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:39:32,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:39:32,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:39:32,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:39:32,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:39:32,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:39:32,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:39:32,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:39:32,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... [2018-10-22 15:39:32,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:39:32,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:39:32,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:39:32,712 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:39:32,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:39:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:39:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:39:33,009 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:39:33,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:39:33 BoogieIcfgContainer [2018-10-22 15:39:33,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:39:33,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:39:33,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:39:33,015 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:39:33,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:39:32" (1/3) ... [2018-10-22 15:39:33,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bceb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:39:33, skipping insertion in model container [2018-10-22 15:39:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:39:32" (2/3) ... [2018-10-22 15:39:33,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bceb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:39:33, skipping insertion in model container [2018-10-22 15:39:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:39:33" (3/3) ... [2018-10-22 15:39:33,018 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04_true-unreach-call_true-termination.i [2018-10-22 15:39:33,028 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:39:33,036 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:39:33,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:39:33,090 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:39:33,091 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:39:33,091 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:39:33,091 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:39:33,092 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:39:33,092 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:39:33,092 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:39:33,092 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:39:33,092 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:39:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-22 15:39:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-22 15:39:33,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:33,113 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-22 15:39:33,115 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:33,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash 889814567, now seen corresponding path program 1 times [2018-10-22 15:39:33,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:33,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:33,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:39:33,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:39:33,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:39:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:39:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:39:33,244 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2018-10-22 15:39:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:33,261 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-10-22 15:39:33,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:39:33,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-22 15:39:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:33,273 INFO L225 Difference]: With dead ends: 21 [2018-10-22 15:39:33,273 INFO L226 Difference]: Without dead ends: 9 [2018-10-22 15:39:33,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:39:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-22 15:39:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-22 15:39:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-22 15:39:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-22 15:39:33,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-22 15:39:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:33,311 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-22 15:39:33,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:39:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-22 15:39:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-22 15:39:33,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:33,312 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:33,312 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:33,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1805894861, now seen corresponding path program 1 times [2018-10-22 15:39:33,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:33,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:33,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:33,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:39:33,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:39:33,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:39:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:39:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:39:33,362 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2018-10-22 15:39:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:33,437 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-22 15:39:33,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:39:33,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-22 15:39:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:33,441 INFO L225 Difference]: With dead ends: 16 [2018-10-22 15:39:33,441 INFO L226 Difference]: Without dead ends: 12 [2018-10-22 15:39:33,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:39:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-22 15:39:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-10-22 15:39:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-22 15:39:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-22 15:39:33,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2018-10-22 15:39:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:33,457 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-22 15:39:33,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:39:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-22 15:39:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 15:39:33,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:33,462 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:33,462 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:33,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:33,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1994321781, now seen corresponding path program 1 times [2018-10-22 15:39:33,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:33,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:33,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:33,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:33,576 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 [2018-10-22 15:39:33,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:33,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:33,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-22 15:39:33,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:39:33,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:39:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:39:33,651 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-10-22 15:39:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:33,704 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-22 15:39:33,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:39:33,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-22 15:39:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:33,705 INFO L225 Difference]: With dead ends: 19 [2018-10-22 15:39:33,705 INFO L226 Difference]: Without dead ends: 15 [2018-10-22 15:39:33,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:39:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-22 15:39:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-10-22 15:39:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-22 15:39:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-22 15:39:33,710 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-10-22 15:39:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:33,710 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-22 15:39:33,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:39:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-22 15:39:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 15:39:33,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:33,711 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:33,712 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:33,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:33,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1089618957, now seen corresponding path program 2 times [2018-10-22 15:39:33,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:33,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:33,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:33,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:33,809 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 [2018-10-22 15:39:33,827 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:39:33,851 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:39:33,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:33,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:33,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:33,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-22 15:39:33,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:39:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:39:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:39:33,892 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-22 15:39:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:33,946 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-22 15:39:33,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:39:33,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-22 15:39:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:33,947 INFO L225 Difference]: With dead ends: 22 [2018-10-22 15:39:33,947 INFO L226 Difference]: Without dead ends: 18 [2018-10-22 15:39:33,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:39:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-22 15:39:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-10-22 15:39:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 15:39:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-22 15:39:33,952 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-10-22 15:39:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:33,952 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-22 15:39:33,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:39:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-22 15:39:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:39:33,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:33,953 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:33,954 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:33,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1122715979, now seen corresponding path program 3 times [2018-10-22 15:39:33,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:33,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:33,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:33,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:34,109 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 [2018-10-22 15:39:34,124 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:39:34,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-22 15:39:34,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:34,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:34,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-22 15:39:34,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:39:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:39:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:39:34,175 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2018-10-22 15:39:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:34,332 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-22 15:39:34,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:39:34,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-10-22 15:39:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:34,334 INFO L225 Difference]: With dead ends: 25 [2018-10-22 15:39:34,334 INFO L226 Difference]: Without dead ends: 21 [2018-10-22 15:39:34,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:39:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-22 15:39:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-10-22 15:39:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 15:39:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-22 15:39:34,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2018-10-22 15:39:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:34,339 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-22 15:39:34,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:39:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-22 15:39:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-22 15:39:34,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:34,340 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:34,341 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:34,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash -726379699, now seen corresponding path program 4 times [2018-10-22 15:39:34,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:34,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:34,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:34,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:34,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:34,497 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 [2018-10-22 15:39:34,512 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:39:34,536 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:39:34,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:34,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:34,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-22 15:39:34,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:39:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:39:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:39:34,579 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-10-22 15:39:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:34,640 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-22 15:39:34,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:39:34,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-10-22 15:39:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:34,641 INFO L225 Difference]: With dead ends: 28 [2018-10-22 15:39:34,641 INFO L226 Difference]: Without dead ends: 24 [2018-10-22 15:39:34,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:39:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-22 15:39:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-10-22 15:39:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 15:39:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-22 15:39:34,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2018-10-22 15:39:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:34,651 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-22 15:39:34,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:39:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-22 15:39:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:39:34,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:34,652 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:34,652 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:34,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 114815499, now seen corresponding path program 5 times [2018-10-22 15:39:34,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:34,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:34,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:34,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:34,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:34,788 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 [2018-10-22 15:39:34,796 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:39:34,886 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-22 15:39:34,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:34,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:34,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:34,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-22 15:39:34,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-22 15:39:34,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-22 15:39:34,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:39:34,930 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 8 states. [2018-10-22 15:39:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:34,988 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-22 15:39:34,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:39:34,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-10-22 15:39:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:34,990 INFO L225 Difference]: With dead ends: 31 [2018-10-22 15:39:34,990 INFO L226 Difference]: Without dead ends: 27 [2018-10-22 15:39:34,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:39:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-22 15:39:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-10-22 15:39:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-22 15:39:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-22 15:39:34,996 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2018-10-22 15:39:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:34,996 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-22 15:39:34,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-22 15:39:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-22 15:39:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-22 15:39:34,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:34,997 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:34,997 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:34,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash -973213043, now seen corresponding path program 6 times [2018-10-22 15:39:34,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:34,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:34,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:34,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:34,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:35,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:35,130 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 [2018-10-22 15:39:35,147 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-22 15:39:35,175 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-22 15:39:35,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:35,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:35,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:35,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-22 15:39:35,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:39:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:39:35,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:39:35,210 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-10-22 15:39:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:35,329 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-22 15:39:35,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 15:39:35,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-10-22 15:39:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:35,330 INFO L225 Difference]: With dead ends: 34 [2018-10-22 15:39:35,331 INFO L226 Difference]: Without dead ends: 30 [2018-10-22 15:39:35,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:39:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-22 15:39:35,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-10-22 15:39:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-22 15:39:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-22 15:39:35,336 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2018-10-22 15:39:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:35,336 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-22 15:39:35,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:39:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-22 15:39:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-22 15:39:35,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:35,338 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:35,338 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:35,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash -313324853, now seen corresponding path program 7 times [2018-10-22 15:39:35,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:35,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:35,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:35,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:35,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:35,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:35,704 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:39:35,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:35,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:35,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:35,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-22 15:39:35,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-22 15:39:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-22 15:39:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:39:35,765 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 10 states. [2018-10-22 15:39:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:35,809 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-22 15:39:35,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 15:39:35,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-10-22 15:39:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:35,811 INFO L225 Difference]: With dead ends: 36 [2018-10-22 15:39:35,811 INFO L226 Difference]: Without dead ends: 32 [2018-10-22 15:39:35,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:39:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-22 15:39:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-22 15:39:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-22 15:39:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-22 15:39:35,817 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2018-10-22 15:39:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:35,818 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-22 15:39:35,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-22 15:39:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-22 15:39:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-22 15:39:35,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:35,819 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:35,819 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:35,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 350429645, now seen corresponding path program 8 times [2018-10-22 15:39:35,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:35,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:35,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:39:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:36,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:39:36,300 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-22 15:39:36,319 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:39:36,338 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:39:36,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:39:36,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:39:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:36,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:39:36,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-22 15:39:36,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 15:39:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 15:39:36,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:39:36,433 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2018-10-22 15:39:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:36,653 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-22 15:39:36,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:39:36,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2018-10-22 15:39:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:36,654 INFO L225 Difference]: With dead ends: 39 [2018-10-22 15:39:36,654 INFO L226 Difference]: Without dead ends: 35 [2018-10-22 15:39:36,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-10-22 15:39:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-22 15:39:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-22 15:39:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-22 15:39:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-22 15:39:36,661 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 31 [2018-10-22 15:39:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:36,661 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-22 15:39:36,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 15:39:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-22 15:39:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-22 15:39:36,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:39:36,662 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-10-22 15:39:36,663 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:39:36,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:39:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash 231248779, now seen corresponding path program 9 times [2018-10-22 15:39:36,663 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:39:36,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:39:36,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:36,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:39:36,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:39:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:39:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:39:36,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:39:36,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-22 15:39:36,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:39:36,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:39:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:39:36,879 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2018-10-22 15:39:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:39:37,031 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-22 15:39:37,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:39:37,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2018-10-22 15:39:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:39:37,034 INFO L225 Difference]: With dead ends: 35 [2018-10-22 15:39:37,034 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:39:37,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:39:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:39:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:39:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:39:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:39:37,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-10-22 15:39:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:39:37,036 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:39:37,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:39:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:39:37,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:39:37,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:39:37,283 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-10-22 15:39:37,286 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:39:37,286 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:39:37,286 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-10-22 15:39:37,286 INFO L425 ceAbstractionStarter]: For program point L11(lines 11 17) no Hoare annotation was computed. [2018-10-22 15:39:37,287 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2018-10-22 15:39:37,287 INFO L421 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~sn~0 6) (<= 6 ULTIMATE.start_main_~sn~0) (<= 4 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 4)) (and (<= 9 ULTIMATE.start_main_~i~0) (<= 16 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~sn~0 16)) (and (<= ULTIMATE.start_main_~sn~0 10) (<= ULTIMATE.start_main_~i~0 6) (<= 6 ULTIMATE.start_main_~i~0) (<= 10 ULTIMATE.start_main_~sn~0)) (and (<= ULTIMATE.start_main_~sn~0 12) (<= 7 ULTIMATE.start_main_~i~0) (<= 12 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 7)) (and (<= 8 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~sn~0 8)) (and (<= 2 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 2) (<= ULTIMATE.start_main_~sn~0 2) (<= 2 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~sn~0 0) (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 1) (<= 0 ULTIMATE.start_main_~sn~0)) (and (<= 3 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 3) (<= ULTIMATE.start_main_~sn~0 4) (<= 4 ULTIMATE.start_main_~sn~0)) (and (<= 14 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 8) (<= ULTIMATE.start_main_~sn~0 14) (<= 8 ULTIMATE.start_main_~i~0))) [2018-10-22 15:39:37,287 INFO L425 ceAbstractionStarter]: For program point L13-5(lines 13 15) no Hoare annotation was computed. [2018-10-22 15:39:37,287 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:39:37,288 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:39:37,288 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:39:37,288 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:39:37,288 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:39:37,288 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-22 15:39:37,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:39:37 BoogieIcfgContainer [2018-10-22 15:39:37,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:39:37,306 INFO L168 Benchmark]: Toolchain (without parser) took 4927.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -522.8 MB). Peak memory consumption was 230.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:39:37,307 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:39:37,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:39:37,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:39:37,309 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:39:37,310 INFO L168 Benchmark]: RCFGBuilder took 299.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:39:37,311 INFO L168 Benchmark]: TraceAbstraction took 4293.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:39:37,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 299.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4293.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((((((((sn <= 6 && 6 <= sn) && 4 <= i) && i <= 4) || ((9 <= i && 16 <= sn) && sn <= 16)) || (((sn <= 10 && i <= 6) && 6 <= i) && 10 <= sn)) || (((sn <= 12 && 7 <= i) && 12 <= sn) && i <= 7)) || (((8 <= sn && i <= 5) && 5 <= i) && sn <= 8)) || (((2 <= sn && i <= 2) && sn <= 2) && 2 <= i)) || (((sn <= 0 && 1 <= i) && i <= 1) && 0 <= sn)) || (((3 <= i && i <= 3) && sn <= 4) && 4 <= sn)) || (((14 <= sn && i <= 8) && sn <= 14) && 8 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 11 OverallIterations, 10 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 37 SDslu, 310 SDs, 0 SdLazy, 248 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 116 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 375 NumberOfCodeBlocks, 374 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 27634 SizeOfPredicates, 9 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 126/774 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...