java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:15:53,051 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:15:53,053 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:15:53,072 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:15:53,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:15:53,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:15:53,075 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:15:53,077 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:15:53,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:15:53,080 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:15:53,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:15:53,083 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:15:53,084 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:15:53,085 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:15:53,090 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:15:53,090 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:15:53,091 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:15:53,098 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:15:53,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:15:53,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:15:53,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:15:53,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:15:53,114 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:15:53,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:15:53,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:15:53,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:15:53,119 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:15:53,120 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:15:53,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:15:53,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:15:53,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:15:53,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:15:53,131 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 20:15:53,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:15:53,157 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:15:53,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:15:53,159 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:15:53,160 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:15:53,161 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:15:53,161 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:15:53,161 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:15:53,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:15:53,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:15:53,162 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:15:53,162 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:15:53,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:15:53,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:15:53,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:15:53,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:15:53,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:15:53,164 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:15:53,164 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:15:53,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:15:53,165 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:15:53,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:15:53,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:15:53,165 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:15:53,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:15:53,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:15:53,166 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:15:53,166 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:15:53,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:15:53,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:15:53,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:15:53,243 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:15:53,244 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:15:53,244 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-23 20:15:53,299 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5892b1c/dc2abc81dcd04e358555e54c48955ef4/FLAG4b0795eb8 [2018-10-23 20:15:54,218 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:15:54,219 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-23 20:15:54,264 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5892b1c/dc2abc81dcd04e358555e54c48955ef4/FLAG4b0795eb8 [2018-10-23 20:15:54,284 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5892b1c/dc2abc81dcd04e358555e54c48955ef4 [2018-10-23 20:15:54,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:15:54,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:15:54,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:15:54,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:15:54,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:15:54,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:15:54" (1/1) ... [2018-10-23 20:15:54,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da13f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:54, skipping insertion in model container [2018-10-23 20:15:54,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:15:54" (1/1) ... [2018-10-23 20:15:54,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:15:54,518 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:15:56,053 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:15:56,058 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:15:56,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:15:56,796 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:15:56,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56 WrapperNode [2018-10-23 20:15:56,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:15:56,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:15:56,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:15:56,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:15:56,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:56,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:57,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:15:57,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:15:57,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:15:57,666 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:15:57,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:57,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:57,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:57,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:57,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:58,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:58,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (1/1) ... [2018-10-23 20:15:58,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:15:58,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:15:58,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:15:58,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:15:58,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (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 20:15:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:15:58,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:15:58,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:16:12,181 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:16:12,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:12 BoogieIcfgContainer [2018-10-23 20:16:12,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:16:12,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:16:12,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:16:12,186 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:16:12,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:15:54" (1/3) ... [2018-10-23 20:16:12,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc79cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:12, skipping insertion in model container [2018-10-23 20:16:12,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:56" (2/3) ... [2018-10-23 20:16:12,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc79cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:12, skipping insertion in model container [2018-10-23 20:16:12,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:12" (3/3) ... [2018-10-23 20:16:12,190 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-10-23 20:16:12,199 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:16:12,209 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:16:12,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:16:12,272 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:16:12,273 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:16:12,273 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:16:12,274 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:16:12,274 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:16:12,274 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:16:12,274 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:16:12,274 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:16:12,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:16:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:16:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-23 20:16:12,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:12,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:12,324 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:12,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-23 20:16:12,333 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:12,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:12,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:12,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:12,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:12,840 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 20:16:12,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:12,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:12,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:12,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:12,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:12,868 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:16:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:27,646 INFO L93 Difference]: Finished difference Result 3991 states and 7504 transitions. [2018-10-23 20:16:27,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:27,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-23 20:16:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:27,694 INFO L225 Difference]: With dead ends: 3991 [2018-10-23 20:16:27,694 INFO L226 Difference]: Without dead ends: 2885 [2018-10-23 20:16:27,704 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 20:16:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-10-23 20:16:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1946. [2018-10-23 20:16:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-10-23 20:16:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3412 transitions. [2018-10-23 20:16:27,870 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3412 transitions. Word has length 61 [2018-10-23 20:16:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:27,871 INFO L481 AbstractCegarLoop]: Abstraction has 1946 states and 3412 transitions. [2018-10-23 20:16:27,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3412 transitions. [2018-10-23 20:16:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 20:16:27,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:27,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:27,881 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:27,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1442154721, now seen corresponding path program 1 times [2018-10-23 20:16:27,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:27,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:27,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:27,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:27,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:28,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:28,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:28,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:28,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:28,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:28,133 INFO L87 Difference]: Start difference. First operand 1946 states and 3412 transitions. Second operand 4 states. [2018-10-23 20:16:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:47,922 INFO L93 Difference]: Finished difference Result 7107 states and 12745 transitions. [2018-10-23 20:16:47,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:47,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2018-10-23 20:16:47,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:47,962 INFO L225 Difference]: With dead ends: 7107 [2018-10-23 20:16:47,962 INFO L226 Difference]: Without dead ends: 5163 [2018-10-23 20:16:47,968 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 20:16:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-23 20:16:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5141. [2018-10-23 20:16:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2018-10-23 20:16:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 8063 transitions. [2018-10-23 20:16:48,084 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 8063 transitions. Word has length 128 [2018-10-23 20:16:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:48,085 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 8063 transitions. [2018-10-23 20:16:48,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 8063 transitions. [2018-10-23 20:16:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-23 20:16:48,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:48,098 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:48,099 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:48,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1645796799, now seen corresponding path program 1 times [2018-10-23 20:16:48,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:48,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:48,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:48,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:48,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:48,574 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:16:49,305 WARN L179 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:16:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-23 20:16:49,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:16:49,843 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 20:16:49,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:49,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:16:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:50,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:16:50,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:16:50,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:16:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:16:50,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:16:50,107 INFO L87 Difference]: Start difference. First operand 5141 states and 8063 transitions. Second operand 6 states. [2018-10-23 20:16:50,375 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:17:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:10,428 INFO L93 Difference]: Finished difference Result 26053 states and 40615 transitions. [2018-10-23 20:17:10,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:17:10,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-23 20:17:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:10,536 INFO L225 Difference]: With dead ends: 26053 [2018-10-23 20:17:10,536 INFO L226 Difference]: Without dead ends: 20914 [2018-10-23 20:17:10,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:17:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2018-10-23 20:17:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 20913. [2018-10-23 20:17:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20913 states. [2018-10-23 20:17:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20913 states to 20913 states and 28528 transitions. [2018-10-23 20:17:10,967 INFO L78 Accepts]: Start accepts. Automaton has 20913 states and 28528 transitions. Word has length 158 [2018-10-23 20:17:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:10,967 INFO L481 AbstractCegarLoop]: Abstraction has 20913 states and 28528 transitions. [2018-10-23 20:17:10,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:17:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20913 states and 28528 transitions. [2018-10-23 20:17:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-23 20:17:10,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:10,977 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:10,978 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:10,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:10,978 INFO L82 PathProgramCache]: Analyzing trace with hash -571397369, now seen corresponding path program 1 times [2018-10-23 20:17:10,978 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:10,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:10,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:10,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:17:11,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:11,432 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 20:17:11,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:11,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:17:11,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:11,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:17:11,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:11,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:11,825 INFO L87 Difference]: Start difference. First operand 20913 states and 28528 transitions. Second operand 4 states. [2018-10-23 20:17:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:23,781 INFO L93 Difference]: Finished difference Result 71020 states and 97374 transitions. [2018-10-23 20:17:23,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:23,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-23 20:17:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:23,904 INFO L225 Difference]: With dead ends: 71020 [2018-10-23 20:17:23,904 INFO L226 Difference]: Without dead ends: 50897 [2018-10-23 20:17:23,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 267 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 20:17:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50897 states. [2018-10-23 20:17:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50897 to 39823. [2018-10-23 20:17:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39823 states. [2018-10-23 20:17:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39823 states to 39823 states and 50523 transitions. [2018-10-23 20:17:25,092 INFO L78 Accepts]: Start accepts. Automaton has 39823 states and 50523 transitions. Word has length 267 [2018-10-23 20:17:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:25,093 INFO L481 AbstractCegarLoop]: Abstraction has 39823 states and 50523 transitions. [2018-10-23 20:17:25,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 39823 states and 50523 transitions. [2018-10-23 20:17:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-23 20:17:25,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:25,102 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:25,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:25,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:25,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2043076177, now seen corresponding path program 1 times [2018-10-23 20:17:25,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:25,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:25,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:25,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:25,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 20:17:25,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:25,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:17:25,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:17:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:17:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:25,442 INFO L87 Difference]: Start difference. First operand 39823 states and 50523 transitions. Second operand 3 states. [2018-10-23 20:17:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:32,267 INFO L93 Difference]: Finished difference Result 114312 states and 145741 transitions. [2018-10-23 20:17:32,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:17:32,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-10-23 20:17:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:32,427 INFO L225 Difference]: With dead ends: 114312 [2018-10-23 20:17:32,427 INFO L226 Difference]: Without dead ends: 75279 [2018-10-23 20:17:32,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75279 states. [2018-10-23 20:17:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75279 to 74490. [2018-10-23 20:17:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74490 states. [2018-10-23 20:17:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74490 states to 74490 states and 89291 transitions. [2018-10-23 20:17:33,588 INFO L78 Accepts]: Start accepts. Automaton has 74490 states and 89291 transitions. Word has length 293 [2018-10-23 20:17:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:33,589 INFO L481 AbstractCegarLoop]: Abstraction has 74490 states and 89291 transitions. [2018-10-23 20:17:33,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:17:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 74490 states and 89291 transitions. [2018-10-23 20:17:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-23 20:17:33,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:33,617 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:33,618 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:33,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash -40954621, now seen corresponding path program 1 times [2018-10-23 20:17:33,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:33,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:33,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:33,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:33,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:34,009 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:17:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-23 20:17:34,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:34,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:34,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:34,699 INFO L87 Difference]: Start difference. First operand 74490 states and 89291 transitions. Second operand 4 states. [2018-10-23 20:17:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:47,625 INFO L93 Difference]: Finished difference Result 193140 states and 232971 transitions. [2018-10-23 20:17:47,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:47,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-23 20:17:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:47,773 INFO L225 Difference]: With dead ends: 193140 [2018-10-23 20:17:47,773 INFO L226 Difference]: Without dead ends: 119440 [2018-10-23 20:17:47,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119440 states. [2018-10-23 20:17:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119440 to 119405. [2018-10-23 20:17:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119405 states. [2018-10-23 20:17:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119405 states to 119405 states and 138598 transitions. [2018-10-23 20:17:49,704 INFO L78 Accepts]: Start accepts. Automaton has 119405 states and 138598 transitions. Word has length 396 [2018-10-23 20:17:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:49,705 INFO L481 AbstractCegarLoop]: Abstraction has 119405 states and 138598 transitions. [2018-10-23 20:17:49,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119405 states and 138598 transitions. [2018-10-23 20:17:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-23 20:17:49,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:49,739 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 2, 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 20:17:49,739 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:49,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:49,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2066761458, now seen corresponding path program 1 times [2018-10-23 20:17:49,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:49,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:49,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:49,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:49,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 20:17:50,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:50,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:50,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:17:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:17:50,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:50,229 INFO L87 Difference]: Start difference. First operand 119405 states and 138598 transitions. Second operand 5 states. [2018-10-23 20:18:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:18,180 INFO L93 Difference]: Finished difference Result 391988 states and 454896 transitions. [2018-10-23 20:18:18,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:18:18,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2018-10-23 20:18:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:18,548 INFO L225 Difference]: With dead ends: 391988 [2018-10-23 20:18:18,548 INFO L226 Difference]: Without dead ends: 273373 [2018-10-23 20:18:18,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273373 states. [2018-10-23 20:18:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273373 to 260561. [2018-10-23 20:18:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260561 states. [2018-10-23 20:18:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260561 states to 260561 states and 295629 transitions. [2018-10-23 20:18:22,010 INFO L78 Accepts]: Start accepts. Automaton has 260561 states and 295629 transitions. Word has length 477 [2018-10-23 20:18:22,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:22,010 INFO L481 AbstractCegarLoop]: Abstraction has 260561 states and 295629 transitions. [2018-10-23 20:18:22,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:18:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 260561 states and 295629 transitions. [2018-10-23 20:18:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-23 20:18:22,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:22,062 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:22,062 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:22,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1207682100, now seen corresponding path program 1 times [2018-10-23 20:18:22,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:22,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:22,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:22,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:22,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 20:18:22,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:22,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:22,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:22,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:22,789 INFO L87 Difference]: Start difference. First operand 260561 states and 295629 transitions. Second operand 4 states. [2018-10-23 20:18:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:35,261 INFO L93 Difference]: Finished difference Result 520352 states and 590500 transitions. [2018-10-23 20:18:35,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:35,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 566 [2018-10-23 20:18:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:35,598 INFO L225 Difference]: With dead ends: 520352 [2018-10-23 20:18:35,598 INFO L226 Difference]: Without dead ends: 260581 [2018-10-23 20:18:37,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260581 states. [2018-10-23 20:18:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260581 to 255043. [2018-10-23 20:18:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255043 states. [2018-10-23 20:18:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255043 states to 255043 states and 280707 transitions. [2018-10-23 20:18:40,703 INFO L78 Accepts]: Start accepts. Automaton has 255043 states and 280707 transitions. Word has length 566 [2018-10-23 20:18:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:40,704 INFO L481 AbstractCegarLoop]: Abstraction has 255043 states and 280707 transitions. [2018-10-23 20:18:40,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 255043 states and 280707 transitions. [2018-10-23 20:18:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-10-23 20:18:40,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:40,754 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 20:18:40,754 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:40,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1997089938, now seen corresponding path program 1 times [2018-10-23 20:18:40,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:40,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:40,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:40,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:40,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-23 20:18:41,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:41,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:18:41,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:41,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:41,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:41,337 INFO L87 Difference]: Start difference. First operand 255043 states and 280707 transitions. Second operand 4 states. [2018-10-23 20:18:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:56,674 INFO L93 Difference]: Finished difference Result 522690 states and 574832 transitions. [2018-10-23 20:18:56,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:56,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 629 [2018-10-23 20:18:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:57,009 INFO L225 Difference]: With dead ends: 522690 [2018-10-23 20:18:57,009 INFO L226 Difference]: Without dead ends: 229750 [2018-10-23 20:18:57,149 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 20:18:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229750 states. [2018-10-23 20:19:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229750 to 213989. [2018-10-23 20:19:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213989 states. [2018-10-23 20:19:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213989 states to 213989 states and 233017 transitions. [2018-10-23 20:19:00,513 INFO L78 Accepts]: Start accepts. Automaton has 213989 states and 233017 transitions. Word has length 629 [2018-10-23 20:19:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:00,514 INFO L481 AbstractCegarLoop]: Abstraction has 213989 states and 233017 transitions. [2018-10-23 20:19:00,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 213989 states and 233017 transitions. [2018-10-23 20:19:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-10-23 20:19:00,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:00,551 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:00,551 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:00,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash 40773872, now seen corresponding path program 1 times [2018-10-23 20:19:00,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:00,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:00,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:00,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:00,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:01,307 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:19:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 776 proven. 8 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-10-23 20:19:02,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:19:02,137 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 20:19:02,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:02,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:19:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 961 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-23 20:19:02,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:19:02,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:19:02,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:02,697 INFO L87 Difference]: Start difference. First operand 213989 states and 233017 transitions. Second operand 4 states. [2018-10-23 20:19:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:11,670 INFO L93 Difference]: Finished difference Result 454784 states and 493792 transitions. [2018-10-23 20:19:11,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:11,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 690 [2018-10-23 20:19:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:11,949 INFO L225 Difference]: With dead ends: 454784 [2018-10-23 20:19:11,949 INFO L226 Difference]: Without dead ends: 241585 [2018-10-23 20:19:12,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241585 states. [2018-10-23 20:19:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241585 to 221867. [2018-10-23 20:19:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-23 20:19:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 241032 transitions. [2018-10-23 20:19:14,554 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 241032 transitions. Word has length 690 [2018-10-23 20:19:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:14,555 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 241032 transitions. [2018-10-23 20:19:14,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 241032 transitions. [2018-10-23 20:19:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-23 20:19:14,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:14,595 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:14,595 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:14,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1193181533, now seen corresponding path program 1 times [2018-10-23 20:19:14,596 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:14,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:14,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:14,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:14,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:15,274 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:19:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2018-10-23 20:19:16,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:16,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:16,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:16,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:16,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:16,410 INFO L87 Difference]: Start difference. First operand 221867 states and 241032 transitions. Second operand 4 states. [2018-10-23 20:19:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:27,365 INFO L93 Difference]: Finished difference Result 442177 states and 480414 transitions. [2018-10-23 20:19:27,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:27,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 742 [2018-10-23 20:19:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:27,644 INFO L225 Difference]: With dead ends: 442177 [2018-10-23 20:19:27,644 INFO L226 Difference]: Without dead ends: 221100 [2018-10-23 20:19:27,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221100 states. [2018-10-23 20:19:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221100 to 218712. [2018-10-23 20:19:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218712 states. [2018-10-23 20:19:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218712 states to 218712 states and 233777 transitions. [2018-10-23 20:19:31,263 INFO L78 Accepts]: Start accepts. Automaton has 218712 states and 233777 transitions. Word has length 742 [2018-10-23 20:19:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:31,263 INFO L481 AbstractCegarLoop]: Abstraction has 218712 states and 233777 transitions. [2018-10-23 20:19:31,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 218712 states and 233777 transitions. [2018-10-23 20:19:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-23 20:19:31,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:31,300 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:19:31,300 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:31,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1393003149, now seen corresponding path program 1 times [2018-10-23 20:19:31,301 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:31,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:31,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:31,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:31,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1280 proven. 16 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-10-23 20:19:32,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:19:32,392 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 20:19:32,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:32,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-23 20:19:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1396 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2018-10-23 20:19:36,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:19:36,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:19:36,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:36,909 INFO L87 Difference]: Start difference. First operand 218712 states and 233777 transitions. Second operand 5 states. [2018-10-23 20:19:36,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 20:19:36,910 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:19:36,919 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:19:36,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:19:36 BoogieIcfgContainer [2018-10-23 20:19:36,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:19:36,920 INFO L168 Benchmark]: Toolchain (without parser) took 222622.96 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,921 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. [2018-10-23 20:19:36,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2498.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 867.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,929 INFO L168 Benchmark]: Boogie Preprocessor took 649.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,933 INFO L168 Benchmark]: RCFGBuilder took 13866.31 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 598.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,934 INFO L168 Benchmark]: TraceAbstraction took 204736.57 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:36,947 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 2498.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 867.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 649.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13866.31 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 598.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204736.57 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (218712states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 204.6s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 166.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8577 SDtfs, 28038 SDslu, 3089 SDs, 0 SdLazy, 56482 SolverSat, 15356 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 132.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1977 GetRequests, 1940 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260561occurred in iteration=7, 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: 21.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 69077 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 7146 NumberOfCodeBlocks, 7146 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7130 ConstructedInterpolants, 0 QuantifiedInterpolants, 9625510 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2499 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 12080/12112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown