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_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:13:16,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:13:16,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:13:16,186 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:13:16,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:13:16,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:13:16,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:13:16,191 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:13:16,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:13:16,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:13:16,195 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:13:16,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:13:16,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:13:16,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:13:16,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:13:16,200 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:13:16,201 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:13:16,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:13:16,209 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:13:16,211 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:13:16,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:13:16,216 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:13:16,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:13:16,222 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:13:16,222 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:13:16,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:13:16,230 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:13:16,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:13:16,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:13:16,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:13:16,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:13:16,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:13:16,241 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 [2018-10-26 19:13:16,271 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:13:16,271 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:13:16,272 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:13:16,272 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:13:16,273 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:13:16,273 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:13:16,273 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:13:16,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:13:16,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:13:16,278 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:13:16,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:13:16,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:13:16,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:13:16,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:13:16,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:13:16,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:13:16,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:13:16,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:13:16,279 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:13:16,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:13:16,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:13:16,280 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:13:16,280 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:13:16,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:13:16,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:13:16,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:13:16,348 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:13:16,348 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:13:16,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-10-26 19:13:16,409 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7ab6e251d/ea6baf0b9afc4adca8db055e43200165/FLAG0114067a0 [2018-10-26 19:13:17,270 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:13:17,271 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-10-26 19:13:17,315 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7ab6e251d/ea6baf0b9afc4adca8db055e43200165/FLAG0114067a0 [2018-10-26 19:13:17,336 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7ab6e251d/ea6baf0b9afc4adca8db055e43200165 [2018-10-26 19:13:17,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:13:17,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:13:17,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:13:17,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:13:17,360 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:13:17,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:13:17" (1/1) ... [2018-10-26 19:13:17,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570fd3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:17, skipping insertion in model container [2018-10-26 19:13:17,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:13:17" (1/1) ... [2018-10-26 19:13:17,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:13:17,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:13:19,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:13:19,146 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:13:19,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:13:19,856 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:13:19,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19 WrapperNode [2018-10-26 19:13:19,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:13:19,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:13:19,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:13:19,858 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:13:19,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:19,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:20,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:13:20,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:13:20,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:13:20,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:13:20,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:20,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:20,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:20,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:20,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:21,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:21,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (1/1) ... [2018-10-26 19:13:21,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:13:21,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:13:21,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:13:21,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:13:21,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (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 [2018-10-26 19:13:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:13:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:13:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:13:38,074 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:13:38,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:13:38 BoogieIcfgContainer [2018-10-26 19:13:38,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:13:38,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:13:38,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:13:38,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:13:38,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:13:17" (1/3) ... [2018-10-26 19:13:38,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a50c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:13:38, skipping insertion in model container [2018-10-26 19:13:38,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:19" (2/3) ... [2018-10-26 19:13:38,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a50c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:13:38, skipping insertion in model container [2018-10-26 19:13:38,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:13:38" (3/3) ... [2018-10-26 19:13:38,083 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25_false-unreach-call.c [2018-10-26 19:13:38,093 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:13:38,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:13:38,121 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:13:38,171 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:13:38,172 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:13:38,172 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:13:38,173 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:13:38,173 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:13:38,173 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:13:38,173 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:13:38,173 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:13:38,173 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:13:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:13:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 19:13:38,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:38,225 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] [2018-10-26 19:13:38,227 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:38,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:38,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-10-26 19:13:38,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:38,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:38,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:38,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:38,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:38,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:38,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:38,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:38,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:38,710 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:13:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:54,722 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-26 19:13:54,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:54,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-26 19:13:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:54,769 INFO L225 Difference]: With dead ends: 3863 [2018-10-26 19:13:54,769 INFO L226 Difference]: Without dead ends: 2757 [2018-10-26 19:13:54,780 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 [2018-10-26 19:13:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-26 19:13:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-26 19:13:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-26 19:13:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-26 19:13:54,940 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 24 [2018-10-26 19:13:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:54,941 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-26 19:13:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-26 19:13:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-26 19:13:54,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:54,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:54,947 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:54,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 187330613, now seen corresponding path program 1 times [2018-10-26 19:13:54,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:54,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:54,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:54,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:54,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:55,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:55,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:55,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:55,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:55,220 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-26 19:14:15,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:15,570 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-26 19:14:15,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:15,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-26 19:14:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:15,615 INFO L225 Difference]: With dead ends: 10268 [2018-10-26 19:14:15,615 INFO L226 Difference]: Without dead ends: 7534 [2018-10-26 19:14:15,624 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 [2018-10-26 19:14:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-26 19:14:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-26 19:14:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-26 19:14:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-26 19:14:15,778 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 111 [2018-10-26 19:14:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:15,780 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-26 19:14:15,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-26 19:14:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 19:14:15,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:15,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:15,789 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:15,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1755320724, now seen corresponding path program 1 times [2018-10-26 19:14:15,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:15,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:15,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:15,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:15,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-26 19:14:16,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:14:16,213 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 [2018-10-26 19:14:16,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:16,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:14:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:14:16,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:14:16,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:14:16,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:16,372 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 4 states. [2018-10-26 19:14:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:30,216 INFO L93 Difference]: Finished difference Result 27748 states and 41948 transitions. [2018-10-26 19:14:30,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:30,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-26 19:14:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:30,311 INFO L225 Difference]: With dead ends: 27748 [2018-10-26 19:14:30,311 INFO L226 Difference]: Without dead ends: 20222 [2018-10-26 19:14:30,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20222 states. [2018-10-26 19:14:30,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20222 to 13833. [2018-10-26 19:14:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13833 states. [2018-10-26 19:14:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 19394 transitions. [2018-10-26 19:14:30,675 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 19394 transitions. Word has length 121 [2018-10-26 19:14:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:30,676 INFO L481 AbstractCegarLoop]: Abstraction has 13833 states and 19394 transitions. [2018-10-26 19:14:30,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 19394 transitions. [2018-10-26 19:14:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 19:14:30,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:30,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:30,681 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:30,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1595404599, now seen corresponding path program 1 times [2018-10-26 19:14:30,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:30,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:30,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:30,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:30,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:31,128 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-26 19:14:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:14:31,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:31,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:14:31,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:31,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:31,186 INFO L87 Difference]: Start difference. First operand 13833 states and 19394 transitions. Second operand 4 states. [2018-10-26 19:14:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:44,083 INFO L93 Difference]: Finished difference Result 38779 states and 53383 transitions. [2018-10-26 19:14:44,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:44,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-26 19:14:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:44,141 INFO L225 Difference]: With dead ends: 38779 [2018-10-26 19:14:44,141 INFO L226 Difference]: Without dead ends: 24948 [2018-10-26 19:14:44,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24948 states. [2018-10-26 19:14:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24948 to 18566. [2018-10-26 19:14:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18566 states. [2018-10-26 19:14:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 24842 transitions. [2018-10-26 19:14:44,502 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 24842 transitions. Word has length 141 [2018-10-26 19:14:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:44,503 INFO L481 AbstractCegarLoop]: Abstraction has 18566 states and 24842 transitions. [2018-10-26 19:14:44,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 24842 transitions. [2018-10-26 19:14:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-26 19:14:44,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:44,506 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:14:44,506 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:44,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -481462500, now seen corresponding path program 1 times [2018-10-26 19:14:44,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:44,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:44,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:44,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:44,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:45,092 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 19:14:45,409 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 19:14:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 19:14:45,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:45,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:14:45,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:14:45,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:14:45,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:45,475 INFO L87 Difference]: Start difference. First operand 18566 states and 24842 transitions. Second operand 5 states. [2018-10-26 19:14:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:59,191 INFO L93 Difference]: Finished difference Result 55253 states and 73251 transitions. [2018-10-26 19:14:59,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:14:59,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-26 19:14:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:59,255 INFO L225 Difference]: With dead ends: 55253 [2018-10-26 19:14:59,255 INFO L226 Difference]: Without dead ends: 36689 [2018-10-26 19:14:59,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:14:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36689 states. [2018-10-26 19:14:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36689 to 36688. [2018-10-26 19:14:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36688 states. [2018-10-26 19:15:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36688 states to 36688 states and 45849 transitions. [2018-10-26 19:15:00,011 INFO L78 Accepts]: Start accepts. Automaton has 36688 states and 45849 transitions. Word has length 170 [2018-10-26 19:15:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:00,012 INFO L481 AbstractCegarLoop]: Abstraction has 36688 states and 45849 transitions. [2018-10-26 19:15:00,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:15:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 36688 states and 45849 transitions. [2018-10-26 19:15:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-26 19:15:00,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:00,021 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:00,021 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:00,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 406770604, now seen corresponding path program 1 times [2018-10-26 19:15:00,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:00,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:00,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:00,463 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:15:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:15:00,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:00,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:15:00,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:15:00,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:15:00,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:00,577 INFO L87 Difference]: Start difference. First operand 36688 states and 45849 transitions. Second operand 4 states. [2018-10-26 19:15:12,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:12,420 INFO L93 Difference]: Finished difference Result 111190 states and 140637 transitions. [2018-10-26 19:15:12,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:15:12,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-26 19:15:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:12,498 INFO L225 Difference]: With dead ends: 111190 [2018-10-26 19:15:12,498 INFO L226 Difference]: Without dead ends: 64978 [2018-10-26 19:15:12,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64978 states. [2018-10-26 19:15:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64978 to 57884. [2018-10-26 19:15:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57884 states. [2018-10-26 19:15:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57884 states to 57884 states and 67207 transitions. [2018-10-26 19:15:13,310 INFO L78 Accepts]: Start accepts. Automaton has 57884 states and 67207 transitions. Word has length 267 [2018-10-26 19:15:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:13,310 INFO L481 AbstractCegarLoop]: Abstraction has 57884 states and 67207 transitions. [2018-10-26 19:15:13,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:15:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 57884 states and 67207 transitions. [2018-10-26 19:15:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-26 19:15:13,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:13,320 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:13,320 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:13,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash -392787967, now seen corresponding path program 1 times [2018-10-26 19:15:13,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:13,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:13,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:13,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:13,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 19:15:13,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:13,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:15:13,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:15:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:15:13,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:15:13,781 INFO L87 Difference]: Start difference. First operand 57884 states and 67207 transitions. Second operand 5 states. [2018-10-26 19:15:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:36,330 INFO L93 Difference]: Finished difference Result 208231 states and 242136 transitions. [2018-10-26 19:15:36,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:15:36,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-10-26 19:15:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:36,530 INFO L225 Difference]: With dead ends: 208231 [2018-10-26 19:15:36,531 INFO L226 Difference]: Without dead ends: 151137 [2018-10-26 19:15:36,595 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 [2018-10-26 19:15:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151137 states. [2018-10-26 19:15:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151137 to 149400. [2018-10-26 19:15:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149400 states. [2018-10-26 19:15:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149400 states to 149400 states and 169420 transitions. [2018-10-26 19:15:39,301 INFO L78 Accepts]: Start accepts. Automaton has 149400 states and 169420 transitions. Word has length 312 [2018-10-26 19:15:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:39,301 INFO L481 AbstractCegarLoop]: Abstraction has 149400 states and 169420 transitions. [2018-10-26 19:15:39,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:15:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 149400 states and 169420 transitions. [2018-10-26 19:15:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-26 19:15:39,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:39,311 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:39,312 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:39,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1057237503, now seen corresponding path program 1 times [2018-10-26 19:15:39,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:39,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:39,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:39,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:39,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 19:15:39,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:39,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:15:39,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:15:39,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:15:39,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:39,677 INFO L87 Difference]: Start difference. First operand 149400 states and 169420 transitions. Second operand 4 states. [2018-10-26 19:15:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:50,917 INFO L93 Difference]: Finished difference Result 337452 states and 384181 transitions. [2018-10-26 19:15:50,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:15:50,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 370 [2018-10-26 19:15:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:51,130 INFO L225 Difference]: With dead ends: 337452 [2018-10-26 19:15:51,130 INFO L226 Difference]: Without dead ends: 188842 [2018-10-26 19:15:51,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188842 states. [2018-10-26 19:15:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188842 to 183281. [2018-10-26 19:15:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183281 states. [2018-10-26 19:15:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183281 states to 183281 states and 202393 transitions. [2018-10-26 19:15:54,199 INFO L78 Accepts]: Start accepts. Automaton has 183281 states and 202393 transitions. Word has length 370 [2018-10-26 19:15:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:54,200 INFO L481 AbstractCegarLoop]: Abstraction has 183281 states and 202393 transitions. [2018-10-26 19:15:54,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:15:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 183281 states and 202393 transitions. [2018-10-26 19:15:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-26 19:15:54,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:54,209 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:54,209 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:54,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash 377473173, now seen corresponding path program 1 times [2018-10-26 19:15:54,210 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:54,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:54,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:54,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:54,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-26 19:15:54,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:54,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:15:54,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:15:54,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:15:54,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:15:54,624 INFO L87 Difference]: Start difference. First operand 183281 states and 202393 transitions. Second operand 3 states. [2018-10-26 19:16:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:02,768 INFO L93 Difference]: Finished difference Result 365770 states and 403992 transitions. [2018-10-26 19:16:02,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:16:02,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 402 [2018-10-26 19:16:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:02,987 INFO L225 Difference]: With dead ends: 365770 [2018-10-26 19:16:02,988 INFO L226 Difference]: Without dead ends: 183279 [2018-10-26 19:16:03,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:16:03,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183279 states. [2018-10-26 19:16:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183279 to 180914. [2018-10-26 19:16:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180914 states. [2018-10-26 19:16:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180914 states to 180914 states and 194366 transitions. [2018-10-26 19:16:06,462 INFO L78 Accepts]: Start accepts. Automaton has 180914 states and 194366 transitions. Word has length 402 [2018-10-26 19:16:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 180914 states and 194366 transitions. [2018-10-26 19:16:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:16:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 180914 states and 194366 transitions. [2018-10-26 19:16:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-26 19:16:06,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:06,481 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, 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, 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] [2018-10-26 19:16:06,481 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:06,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash 413175299, now seen corresponding path program 1 times [2018-10-26 19:16:06,482 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:06,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:06,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:06,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:06,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:07,043 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 3 [2018-10-26 19:16:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-26 19:16:07,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:07,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:07,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:07,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:07,325 INFO L87 Difference]: Start difference. First operand 180914 states and 194366 transitions. Second operand 4 states. [2018-10-26 19:16:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:17,865 INFO L93 Difference]: Finished difference Result 363391 states and 391015 transitions. [2018-10-26 19:16:17,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:17,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 523 [2018-10-26 19:16:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:18,060 INFO L225 Difference]: With dead ends: 363391 [2018-10-26 19:16:18,060 INFO L226 Difference]: Without dead ends: 183267 [2018-10-26 19:16:18,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183267 states. [2018-10-26 19:16:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183267 to 181690. [2018-10-26 19:16:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181690 states. [2018-10-26 19:16:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181690 states to 181690 states and 195059 transitions. [2018-10-26 19:16:21,014 INFO L78 Accepts]: Start accepts. Automaton has 181690 states and 195059 transitions. Word has length 523 [2018-10-26 19:16:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:21,015 INFO L481 AbstractCegarLoop]: Abstraction has 181690 states and 195059 transitions. [2018-10-26 19:16:21,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:16:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 181690 states and 195059 transitions. [2018-10-26 19:16:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-10-26 19:16:21,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:21,035 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:21,035 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:21,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1297797700, now seen corresponding path program 1 times [2018-10-26 19:16:21,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:21,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:21,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:21,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-26 19:16:26,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:26,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:26,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:26,618 INFO L87 Difference]: Start difference. First operand 181690 states and 195059 transitions. Second operand 4 states. [2018-10-26 19:16:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:40,137 INFO L93 Difference]: Finished difference Result 431270 states and 462408 transitions. [2018-10-26 19:16:40,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:40,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 577 [2018-10-26 19:16:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:40,889 INFO L225 Difference]: With dead ends: 431270 [2018-10-26 19:16:40,889 INFO L226 Difference]: Without dead ends: 250370 [2018-10-26 19:16:40,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250370 states. [2018-10-26 19:16:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250370 to 240802. [2018-10-26 19:16:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240802 states. [2018-10-26 19:16:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240802 states to 240802 states and 257578 transitions. [2018-10-26 19:16:43,790 INFO L78 Accepts]: Start accepts. Automaton has 240802 states and 257578 transitions. Word has length 577 [2018-10-26 19:16:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:43,791 INFO L481 AbstractCegarLoop]: Abstraction has 240802 states and 257578 transitions. [2018-10-26 19:16:43,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:16:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 240802 states and 257578 transitions. [2018-10-26 19:16:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-26 19:16:43,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:43,809 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:43,809 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:43,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:43,810 INFO L82 PathProgramCache]: Analyzing trace with hash -569222912, now seen corresponding path program 1 times [2018-10-26 19:16:43,810 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:43,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:43,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:43,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:43,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-10-26 19:16:44,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:44,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:44,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:44,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:44,986 INFO L87 Difference]: Start difference. First operand 240802 states and 257578 transitions. Second operand 4 states. [2018-10-26 19:16:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:58,575 INFO L93 Difference]: Finished difference Result 511540 states and 547928 transitions. [2018-10-26 19:16:58,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:58,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 610 [2018-10-26 19:16:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:58,908 INFO L225 Difference]: With dead ends: 511540 [2018-10-26 19:16:58,909 INFO L226 Difference]: Without dead ends: 271528 [2018-10-26 19:16:59,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271528 states. [2018-10-26 19:17:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271528 to 261259. [2018-10-26 19:17:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261259 states. [2018-10-26 19:17:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261259 states to 261259 states and 276108 transitions. [2018-10-26 19:17:02,680 INFO L78 Accepts]: Start accepts. Automaton has 261259 states and 276108 transitions. Word has length 610 [2018-10-26 19:17:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:02,681 INFO L481 AbstractCegarLoop]: Abstraction has 261259 states and 276108 transitions. [2018-10-26 19:17:02,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 261259 states and 276108 transitions. [2018-10-26 19:17:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-10-26 19:17:02,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:02,712 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:02,712 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:02,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2093655308, now seen corresponding path program 1 times [2018-10-26 19:17:02,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:02,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:02,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:02,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:02,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-10-26 19:17:03,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:03,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:17:03,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:17:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:17:03,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:17:03,360 INFO L87 Difference]: Start difference. First operand 261259 states and 276108 transitions. Second operand 3 states. Received shutdown request... [2018-10-26 19:17:06,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:17:06,155 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:17:06,160 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:17:06,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:17:06 BoogieIcfgContainer [2018-10-26 19:17:06,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:17:06,162 INFO L168 Benchmark]: Toolchain (without parser) took 228811.95 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,164 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-26 19:17:06,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2503.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,165 INFO L168 Benchmark]: Boogie Procedure Inliner took 859.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,167 INFO L168 Benchmark]: Boogie Preprocessor took 462.12 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: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,169 INFO L168 Benchmark]: RCFGBuilder took 16895.86 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 245.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -13.5 kB). Peak memory consumption was 612.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,169 INFO L168 Benchmark]: TraceAbstraction took 208084.96 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -363.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:17:06,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2503.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 859.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 462.12 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: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16895.86 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 245.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -13.5 kB). Peak memory consumption was 612.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208084.96 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -363.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (261259states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (42780 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 173.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8701 SDtfs, 26048 SDslu, 3294 SDs, 0 SdLazy, 58605 SolverSat, 14834 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 141.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 142 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=261259occurred in iteration=12, 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: 20.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 50970 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 4458 NumberOfCodeBlocks, 4458 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4444 ConstructedInterpolants, 0 QuantifiedInterpolants, 3982928 SizeOfPredicates, 1 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 5712/5716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown