java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:52:48,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:52:48,122 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:52:48,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:52:48,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:52:48,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:52:48,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:52:48,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:52:48,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:52:48,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:52:48,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:52:48,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:52:48,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:52:48,160 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:52:48,161 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:52:48,162 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:52:48,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:52:48,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:52:48,166 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:52:48,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:52:48,169 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:52:48,170 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:52:48,172 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:52:48,172 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:52:48,173 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:52:48,173 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:52:48,174 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:52:48,175 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:52:48,176 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:52:48,177 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:52:48,177 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:52:48,178 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:52:48,178 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:52:48,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:52:48,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:52:48,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:52:48,180 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:52:48,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:52:48,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:52:48,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:52:48,196 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:52:48,197 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:52:48,197 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:52:48,197 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:52:48,197 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:52:48,198 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:52:48,199 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:52:48,199 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:52:48,199 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:52:48,199 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:52:48,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:52:48,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:52:48,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:52:48,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:52:48,200 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:52:48,200 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:52:48,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:52:48,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:52:48,201 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:52:48,201 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:52:48,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:52:48,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:52:48,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:52:48,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:52:48,276 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:52:48,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-24 16:52:48,346 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c92bf200/381ea5b7af434c7da4fd4e1532ad32a8/FLAGdef3cb0e0 [2018-10-24 16:52:49,099 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:52:49,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-24 16:52:49,131 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c92bf200/381ea5b7af434c7da4fd4e1532ad32a8/FLAGdef3cb0e0 [2018-10-24 16:52:49,151 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c92bf200/381ea5b7af434c7da4fd4e1532ad32a8 [2018-10-24 16:52:49,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:52:49,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:52:49,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:52:49,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:52:49,174 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:52:49,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:49" (1/1) ... [2018-10-24 16:52:49,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:49, skipping insertion in model container [2018-10-24 16:52:49,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:49" (1/1) ... [2018-10-24 16:52:49,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:52:49,313 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:52:50,270 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:52:50,275 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:52:50,646 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:52:50,670 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:52:50,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50 WrapperNode [2018-10-24 16:52:50,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:52:50,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:52:50,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:52:50,677 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:52:50,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:50,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:52:51,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:52:51,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:52:51,270 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:52:51,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... [2018-10-24 16:52:51,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:52:51,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:52:51,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:52:51,546 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:52:51,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:52:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:52:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:52:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:53:00,706 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:53:00,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:00 BoogieIcfgContainer [2018-10-24 16:53:00,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:53:00,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:53:00,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:53:00,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:53:00,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:52:49" (1/3) ... [2018-10-24 16:53:00,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d8ffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:00, skipping insertion in model container [2018-10-24 16:53:00,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:50" (2/3) ... [2018-10-24 16:53:00,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d8ffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:00, skipping insertion in model container [2018-10-24 16:53:00,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:00" (3/3) ... [2018-10-24 16:53:00,719 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label51_true-unreach-call.c [2018-10-24 16:53:00,728 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:53:00,738 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:53:00,755 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:53:00,795 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:53:00,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:53:00,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:53:00,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:53:00,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:53:00,796 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:53:00,796 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:53:00,796 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:53:00,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:53:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:53:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 16:53:00,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:00,839 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] [2018-10-24 16:53:00,842 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:00,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash -387853398, now seen corresponding path program 1 times [2018-10-24 16:53:00,849 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:00,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:00,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:00,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:00,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:01,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:01,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:01,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:53:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:53:01,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:01,336 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:53:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:11,307 INFO L93 Difference]: Finished difference Result 2124 states and 3951 transitions. [2018-10-24 16:53:11,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:53:11,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-24 16:53:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:11,347 INFO L225 Difference]: With dead ends: 2124 [2018-10-24 16:53:11,348 INFO L226 Difference]: Without dead ends: 1526 [2018-10-24 16:53:11,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2018-10-24 16:53:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1032. [2018-10-24 16:53:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-10-24 16:53:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1858 transitions. [2018-10-24 16:53:11,469 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1858 transitions. Word has length 38 [2018-10-24 16:53:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:11,470 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1858 transitions. [2018-10-24 16:53:11,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:53:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1858 transitions. [2018-10-24 16:53:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 16:53:11,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:11,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:11,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:11,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2126674366, now seen corresponding path program 1 times [2018-10-24 16:53:11,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:11,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:11,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:11,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:11,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:11,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:53:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:53:11,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:11,728 INFO L87 Difference]: Start difference. First operand 1032 states and 1858 transitions. Second operand 4 states. [2018-10-24 16:53:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:21,976 INFO L93 Difference]: Finished difference Result 2924 states and 5354 transitions. [2018-10-24 16:53:21,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:53:21,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 16:53:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:21,990 INFO L225 Difference]: With dead ends: 2924 [2018-10-24 16:53:21,990 INFO L226 Difference]: Without dead ends: 1894 [2018-10-24 16:53:21,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2018-10-24 16:53:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1894. [2018-10-24 16:53:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2018-10-24 16:53:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2838 transitions. [2018-10-24 16:53:22,042 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2838 transitions. Word has length 106 [2018-10-24 16:53:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:22,043 INFO L481 AbstractCegarLoop]: Abstraction has 1894 states and 2838 transitions. [2018-10-24 16:53:22,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:53:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2838 transitions. [2018-10-24 16:53:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 16:53:22,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:22,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:22,048 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:22,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1372525769, now seen corresponding path program 1 times [2018-10-24 16:53:22,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:22,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:22,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:22,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:22,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:22,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:53:22,320 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:53:22,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:22,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:53:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:22,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:53:22,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:53:22,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:53:22,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:53:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:53:22,682 INFO L87 Difference]: Start difference. First operand 1894 states and 2838 transitions. Second operand 6 states. [2018-10-24 16:53:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:37,223 INFO L93 Difference]: Finished difference Result 7665 states and 11401 transitions. [2018-10-24 16:53:37,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:53:37,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 16:53:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:37,251 INFO L225 Difference]: With dead ends: 7665 [2018-10-24 16:53:37,251 INFO L226 Difference]: Without dead ends: 3983 [2018-10-24 16:53:37,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:53:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2018-10-24 16:53:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3981. [2018-10-24 16:53:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3981 states. [2018-10-24 16:53:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 4944 transitions. [2018-10-24 16:53:37,345 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 4944 transitions. Word has length 109 [2018-10-24 16:53:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:37,345 INFO L481 AbstractCegarLoop]: Abstraction has 3981 states and 4944 transitions. [2018-10-24 16:53:37,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:53:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 4944 transitions. [2018-10-24 16:53:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-24 16:53:37,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:37,355 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:37,355 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:37,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:37,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1353365610, now seen corresponding path program 1 times [2018-10-24 16:53:37,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:37,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:37,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:37,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:37,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 16:53:37,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:37,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:37,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:53:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:53:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:53:37,616 INFO L87 Difference]: Start difference. First operand 3981 states and 4944 transitions. Second operand 3 states. [2018-10-24 16:53:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:42,025 INFO L93 Difference]: Finished difference Result 10084 states and 12888 transitions. [2018-10-24 16:53:42,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:53:42,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-10-24 16:53:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:42,057 INFO L225 Difference]: With dead ends: 10084 [2018-10-24 16:53:42,057 INFO L226 Difference]: Without dead ends: 6540 [2018-10-24 16:53:42,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:53:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2018-10-24 16:53:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6540. [2018-10-24 16:53:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6540 states. [2018-10-24 16:53:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 7960 transitions. [2018-10-24 16:53:42,180 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 7960 transitions. Word has length 259 [2018-10-24 16:53:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:42,181 INFO L481 AbstractCegarLoop]: Abstraction has 6540 states and 7960 transitions. [2018-10-24 16:53:42,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:53:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 7960 transitions. [2018-10-24 16:53:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 16:53:42,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:42,193 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:53:42,193 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:42,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:42,194 INFO L82 PathProgramCache]: Analyzing trace with hash -144031712, now seen corresponding path program 1 times [2018-10-24 16:53:42,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:42,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:42,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:42,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:42,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 355 proven. 83 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 16:53:42,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:53:42,884 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:53:42,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:43,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:53:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 355 proven. 83 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 16:53:43,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:53:43,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 16:53:43,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:53:43,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:53:43,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:53:43,322 INFO L87 Difference]: Start difference. First operand 6540 states and 7960 transitions. Second operand 7 states. [2018-10-24 16:53:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:55,471 INFO L93 Difference]: Finished difference Result 25892 states and 31137 transitions. [2018-10-24 16:53:55,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:53:55,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2018-10-24 16:53:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:55,537 INFO L225 Difference]: With dead ends: 25892 [2018-10-24 16:53:55,537 INFO L226 Difference]: Without dead ends: 17621 [2018-10-24 16:53:55,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:53:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17621 states. [2018-10-24 16:53:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17621 to 16751. [2018-10-24 16:53:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16751 states. [2018-10-24 16:53:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 19005 transitions. [2018-10-24 16:53:56,010 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 19005 transitions. Word has length 364 [2018-10-24 16:53:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:56,010 INFO L481 AbstractCegarLoop]: Abstraction has 16751 states and 19005 transitions. [2018-10-24 16:53:56,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:53:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 19005 transitions. [2018-10-24 16:53:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-24 16:53:56,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:56,026 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:53:56,026 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:56,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash -902309086, now seen corresponding path program 1 times [2018-10-24 16:53:56,027 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:56,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:56,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:56,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:56,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2018-10-24 16:53:56,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:56,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:56,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:53:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:53:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:53:56,487 INFO L87 Difference]: Start difference. First operand 16751 states and 19005 transitions. Second operand 3 states. [2018-10-24 16:53:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:59,452 INFO L93 Difference]: Finished difference Result 39471 states and 44754 transitions. [2018-10-24 16:53:59,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:53:59,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 470 [2018-10-24 16:53:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:59,508 INFO L225 Difference]: With dead ends: 39471 [2018-10-24 16:53:59,508 INFO L226 Difference]: Without dead ends: 22721 [2018-10-24 16:53:59,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:53:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22721 states. [2018-10-24 16:53:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22721 to 17590. [2018-10-24 16:53:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17590 states. [2018-10-24 16:53:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17590 states to 17590 states and 19880 transitions. [2018-10-24 16:53:59,797 INFO L78 Accepts]: Start accepts. Automaton has 17590 states and 19880 transitions. Word has length 470 [2018-10-24 16:53:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:59,799 INFO L481 AbstractCegarLoop]: Abstraction has 17590 states and 19880 transitions. [2018-10-24 16:53:59,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:53:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 17590 states and 19880 transitions. [2018-10-24 16:53:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2018-10-24 16:53:59,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:59,827 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:59,827 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:59,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 532838612, now seen corresponding path program 1 times [2018-10-24 16:53:59,828 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:59,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:59,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:59,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:59,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 419 proven. 83 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-10-24 16:54:00,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:54:00,874 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:54:00,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:01,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:54:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 419 proven. 83 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-10-24 16:54:01,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:54:01,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-24 16:54:01,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:54:01,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:54:01,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:54:01,552 INFO L87 Difference]: Start difference. First operand 17590 states and 19880 transitions. Second operand 9 states. [2018-10-24 16:54:01,803 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 16:54:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:10,325 INFO L93 Difference]: Finished difference Result 36886 states and 41558 transitions. [2018-10-24 16:54:10,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:54:10,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 593 [2018-10-24 16:54:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:10,360 INFO L225 Difference]: With dead ends: 36886 [2018-10-24 16:54:10,360 INFO L226 Difference]: Without dead ends: 19724 [2018-10-24 16:54:10,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:54:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19724 states. [2018-10-24 16:54:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19724 to 19720. [2018-10-24 16:54:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19720 states. [2018-10-24 16:54:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19720 states to 19720 states and 22076 transitions. [2018-10-24 16:54:10,598 INFO L78 Accepts]: Start accepts. Automaton has 19720 states and 22076 transitions. Word has length 593 [2018-10-24 16:54:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:10,599 INFO L481 AbstractCegarLoop]: Abstraction has 19720 states and 22076 transitions. [2018-10-24 16:54:10,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:54:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 19720 states and 22076 transitions. [2018-10-24 16:54:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2018-10-24 16:54:10,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:10,630 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:10,630 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:10,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -750196100, now seen corresponding path program 1 times [2018-10-24 16:54:10,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:10,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:10,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:10,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:10,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 488 proven. 389 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-24 16:54:11,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:54:11,705 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:54:11,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:11,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:54:12,296 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 20 [2018-10-24 16:54:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-10-24 16:54:13,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:54:13,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:54:13,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:54:13,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:54:13,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:54:13,030 INFO L87 Difference]: Start difference. First operand 19720 states and 22076 transitions. Second operand 7 states. [2018-10-24 16:54:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:37,225 INFO L93 Difference]: Finished difference Result 67614 states and 76473 transitions. [2018-10-24 16:54:37,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 16:54:37,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2018-10-24 16:54:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:37,295 INFO L225 Difference]: With dead ends: 67614 [2018-10-24 16:54:37,296 INFO L226 Difference]: Without dead ends: 48317 [2018-10-24 16:54:37,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 672 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:54:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48317 states. [2018-10-24 16:54:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48317 to 38477. [2018-10-24 16:54:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38477 states. [2018-10-24 16:54:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38477 states to 38477 states and 42025 transitions. [2018-10-24 16:54:37,813 INFO L78 Accepts]: Start accepts. Automaton has 38477 states and 42025 transitions. Word has length 669 [2018-10-24 16:54:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:37,814 INFO L481 AbstractCegarLoop]: Abstraction has 38477 states and 42025 transitions. [2018-10-24 16:54:37,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:54:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38477 states and 42025 transitions. [2018-10-24 16:54:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-10-24 16:54:37,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:37,874 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:54:37,874 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:37,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:37,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1221331625, now seen corresponding path program 1 times [2018-10-24 16:54:37,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:37,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:37,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:37,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:37,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:38,386 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:54:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1581 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2018-10-24 16:54:38,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:38,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:54:38,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:54:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:54:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:38,681 INFO L87 Difference]: Start difference. First operand 38477 states and 42025 transitions. Second operand 3 states. [2018-10-24 16:54:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:43,355 INFO L93 Difference]: Finished difference Result 94016 states and 102986 transitions. [2018-10-24 16:54:43,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:54:43,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2018-10-24 16:54:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:43,420 INFO L225 Difference]: With dead ends: 94016 [2018-10-24 16:54:43,420 INFO L226 Difference]: Without dead ends: 57671 [2018-10-24 16:54:43,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57671 states. [2018-10-24 16:54:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57671 to 51262. [2018-10-24 16:54:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51262 states. [2018-10-24 16:54:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51262 states to 51262 states and 56262 transitions. [2018-10-24 16:54:44,085 INFO L78 Accepts]: Start accepts. Automaton has 51262 states and 56262 transitions. Word has length 767 [2018-10-24 16:54:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:44,087 INFO L481 AbstractCegarLoop]: Abstraction has 51262 states and 56262 transitions. [2018-10-24 16:54:44,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:54:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 51262 states and 56262 transitions. [2018-10-24 16:54:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-10-24 16:54:44,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:44,140 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:44,140 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:44,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash -175703914, now seen corresponding path program 1 times [2018-10-24 16:54:44,141 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:44,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:44,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:44,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:44,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 16:54:45,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:45,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:54:45,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:54:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:54:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:54:45,061 INFO L87 Difference]: Start difference. First operand 51262 states and 56262 transitions. Second operand 5 states. [2018-10-24 16:54:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:52,011 INFO L93 Difference]: Finished difference Result 111485 states and 123051 transitions. [2018-10-24 16:54:52,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:54:52,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2018-10-24 16:54:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:52,099 INFO L225 Difference]: With dead ends: 111485 [2018-10-24 16:54:52,100 INFO L226 Difference]: Without dead ends: 66625 [2018-10-24 16:54:52,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:54:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66625 states. [2018-10-24 16:54:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66625 to 55965. [2018-10-24 16:54:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55965 states. [2018-10-24 16:54:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55965 states to 55965 states and 61391 transitions. [2018-10-24 16:54:52,835 INFO L78 Accepts]: Start accepts. Automaton has 55965 states and 61391 transitions. Word has length 809 [2018-10-24 16:54:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:52,836 INFO L481 AbstractCegarLoop]: Abstraction has 55965 states and 61391 transitions. [2018-10-24 16:54:52,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:54:52,836 INFO L276 IsEmpty]: Start isEmpty. Operand 55965 states and 61391 transitions. [2018-10-24 16:54:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-10-24 16:54:52,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:52,875 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:52,875 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:52,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1566453425, now seen corresponding path program 1 times [2018-10-24 16:54:52,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:52,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:52,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:52,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:52,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:53,697 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:54:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 515 proven. 36 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-10-24 16:54:54,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:54:54,568 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:54:54,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:54,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:54:55,116 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 16 [2018-10-24 16:54:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2018-10-24 16:54:56,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:54:56,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-24 16:54:56,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:54:56,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:54:56,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:54:56,105 INFO L87 Difference]: Start difference. First operand 55965 states and 61391 transitions. Second operand 7 states. [2018-10-24 16:55:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:27,367 INFO L93 Difference]: Finished difference Result 138813 states and 152133 transitions. [2018-10-24 16:55:27,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:55:27,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2018-10-24 16:55:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:27,457 INFO L225 Difference]: With dead ends: 138813 [2018-10-24 16:55:27,457 INFO L226 Difference]: Without dead ends: 82849 [2018-10-24 16:55:27,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:55:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82849 states. [2018-10-24 16:55:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82849 to 55530. [2018-10-24 16:55:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55530 states. [2018-10-24 16:55:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55530 states to 55530 states and 59892 transitions. [2018-10-24 16:55:28,339 INFO L78 Accepts]: Start accepts. Automaton has 55530 states and 59892 transitions. Word has length 814 [2018-10-24 16:55:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:28,340 INFO L481 AbstractCegarLoop]: Abstraction has 55530 states and 59892 transitions. [2018-10-24 16:55:28,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:55:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 55530 states and 59892 transitions. [2018-10-24 16:55:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-24 16:55:28,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:28,382 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:55:28,383 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:28,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash 560682652, now seen corresponding path program 1 times [2018-10-24 16:55:28,385 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:28,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:28,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 943 proven. 0 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2018-10-24 16:55:29,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:29,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:55:29,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:55:29,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:55:29,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:55:29,217 INFO L87 Difference]: Start difference. First operand 55530 states and 59892 transitions. Second operand 3 states. [2018-10-24 16:55:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:31,851 INFO L93 Difference]: Finished difference Result 105075 states and 113423 transitions. [2018-10-24 16:55:31,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:55:31,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 957 [2018-10-24 16:55:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:31,903 INFO L225 Difference]: With dead ends: 105075 [2018-10-24 16:55:31,903 INFO L226 Difference]: Without dead ends: 53810 [2018-10-24 16:55:31,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:55:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53810 states. [2018-10-24 16:55:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53810 to 52955. [2018-10-24 16:55:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52955 states. [2018-10-24 16:55:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52955 states to 52955 states and 57052 transitions. [2018-10-24 16:55:32,787 INFO L78 Accepts]: Start accepts. Automaton has 52955 states and 57052 transitions. Word has length 957 [2018-10-24 16:55:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:32,787 INFO L481 AbstractCegarLoop]: Abstraction has 52955 states and 57052 transitions. [2018-10-24 16:55:32,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:55:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 52955 states and 57052 transitions. [2018-10-24 16:55:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-24 16:55:32,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:32,824 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:55:32,824 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:32,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -393890786, now seen corresponding path program 1 times [2018-10-24 16:55:32,825 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:32,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:32,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:32,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:32,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:33,748 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-24 16:55:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 1178 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-10-24 16:55:34,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:34,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:55:34,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:55:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:55:34,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:55:34,635 INFO L87 Difference]: Start difference. First operand 52955 states and 57052 transitions. Second operand 5 states. [2018-10-24 16:55:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:45,352 INFO L93 Difference]: Finished difference Result 111028 states and 119621 transitions. [2018-10-24 16:55:45,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:55:45,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 957 [2018-10-24 16:55:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:45,414 INFO L225 Difference]: With dead ends: 111028 [2018-10-24 16:55:45,414 INFO L226 Difference]: Without dead ends: 63619 [2018-10-24 16:55:45,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:55:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63619 states. [2018-10-24 16:55:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63619 to 58069. [2018-10-24 16:55:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58069 states. [2018-10-24 16:55:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58069 states to 58069 states and 62270 transitions. [2018-10-24 16:55:45,946 INFO L78 Accepts]: Start accepts. Automaton has 58069 states and 62270 transitions. Word has length 957 [2018-10-24 16:55:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:45,947 INFO L481 AbstractCegarLoop]: Abstraction has 58069 states and 62270 transitions. [2018-10-24 16:55:45,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:55:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 58069 states and 62270 transitions. [2018-10-24 16:55:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2018-10-24 16:55:45,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:45,989 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, 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, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:55:45,989 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:45,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1770551083, now seen corresponding path program 1 times [2018-10-24 16:55:45,990 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:45,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:45,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:45,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:45,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 1522 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2018-10-24 16:55:47,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:47,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:55:47,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:55:47,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:55:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:55:47,571 INFO L87 Difference]: Start difference. First operand 58069 states and 62270 transitions. Second operand 6 states. [2018-10-24 16:55:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:57,021 INFO L93 Difference]: Finished difference Result 131923 states and 141963 transitions. [2018-10-24 16:55:57,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:55:57,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1111 [2018-10-24 16:55:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:57,119 INFO L225 Difference]: With dead ends: 131923 [2018-10-24 16:55:57,119 INFO L226 Difference]: Without dead ends: 78974 [2018-10-24 16:55:57,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:55:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78974 states. [2018-10-24 16:55:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78974 to 58068. [2018-10-24 16:55:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58068 states. [2018-10-24 16:55:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58068 states to 58068 states and 61900 transitions. [2018-10-24 16:55:57,847 INFO L78 Accepts]: Start accepts. Automaton has 58068 states and 61900 transitions. Word has length 1111 [2018-10-24 16:55:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:57,848 INFO L481 AbstractCegarLoop]: Abstraction has 58068 states and 61900 transitions. [2018-10-24 16:55:57,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:55:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 58068 states and 61900 transitions. [2018-10-24 16:55:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2018-10-24 16:55:57,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:57,890 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:55:57,890 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:57,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:57,891 INFO L82 PathProgramCache]: Analyzing trace with hash -88722940, now seen corresponding path program 1 times [2018-10-24 16:55:57,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:57,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:57,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:57,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:57,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 1768 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-10-24 16:55:59,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:59,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:55:59,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:55:59,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:55:59,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:55:59,296 INFO L87 Difference]: Start difference. First operand 58068 states and 61900 transitions. Second operand 3 states. [2018-10-24 16:56:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:56:02,610 INFO L93 Difference]: Finished difference Result 110162 states and 117522 transitions. [2018-10-24 16:56:02,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:56:02,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1253 [2018-10-24 16:56:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:56:02,668 INFO L225 Difference]: With dead ends: 110162 [2018-10-24 16:56:02,668 INFO L226 Difference]: Without dead ends: 58918 [2018-10-24 16:56:02,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:56:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58918 states. [2018-10-24 16:56:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58918 to 57214. [2018-10-24 16:56:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57214 states. [2018-10-24 16:56:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57214 states to 57214 states and 60751 transitions. [2018-10-24 16:56:03,219 INFO L78 Accepts]: Start accepts. Automaton has 57214 states and 60751 transitions. Word has length 1253 [2018-10-24 16:56:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:56:03,219 INFO L481 AbstractCegarLoop]: Abstraction has 57214 states and 60751 transitions. [2018-10-24 16:56:03,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:56:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 57214 states and 60751 transitions. [2018-10-24 16:56:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2018-10-24 16:56:03,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:56:03,261 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:56:03,261 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:56:03,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:56:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1221499625, now seen corresponding path program 1 times [2018-10-24 16:56:03,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:56:03,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:56:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:56:03,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:56:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:56:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:56:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 1345 proven. 346 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-24 16:56:05,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:56:05,721 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:56:05,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:56:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:56:06,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:56:07,209 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_17 Int)) (let ((.cse0 (mod v_prenex_17 299909))) (and (= .cse0 0) (<= .cse0 (+ c_~a14~0 300091)) (<= (+ v_prenex_17 182) 0)))) (exists ((v_prenex_16 Int)) (and (<= (+ v_prenex_16 182) 0) (<= 0 v_prenex_16) (<= (mod v_prenex_16 299909) (+ c_~a14~0 300091)))) (exists ((v_~a14~0_1227 Int)) (let ((.cse1 (mod v_~a14~0_1227 299909))) (and (not (= .cse1 0)) (<= .cse1 (+ c_~a14~0 600000)) (< v_~a14~0_1227 0) (<= (+ v_~a14~0_1227 182) 0))))) is different from true [2018-10-24 16:56:07,810 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-24 16:56:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 991 proven. 108 refuted. 0 times theorem prover too weak. 531 trivial. 501 not checked. [2018-10-24 16:56:12,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:56:12,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-24 16:56:12,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:56:12,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:56:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2018-10-24 16:56:12,351 INFO L87 Difference]: Start difference. First operand 57214 states and 60751 transitions. Second operand 9 states. [2018-10-24 16:56:37,283 WARN L179 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 41 DAG size of output: 22 Received shutdown request... [2018-10-24 16:56:50,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:56:50,047 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:56:50,052 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:56:50,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:56:50 BoogieIcfgContainer [2018-10-24 16:56:50,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:56:50,054 INFO L168 Benchmark]: Toolchain (without parser) took 240888.48 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,055 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:56:50,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1502.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 597.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,057 INFO L168 Benchmark]: Boogie Preprocessor took 275.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,058 INFO L168 Benchmark]: RCFGBuilder took 9163.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.0 MB). Peak memory consumption was 461.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,060 INFO L168 Benchmark]: TraceAbstraction took 229342.59 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -927.6 MB). Peak memory consumption was 748.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:56:50,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1502.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 597.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 275.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9163.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.0 MB). Peak memory consumption was 461.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229342.59 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -927.6 MB). Peak memory consumption was 748.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 119). Cancelled while BasicCegarLoop was constructing difference of abstraction (57214states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (37694 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 229.2s OverallTime, 16 OverallIterations, 9 TraceHistogramMax, 195.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4886 SDtfs, 22007 SDslu, 2713 SDs, 0 SdLazy, 66538 SolverSat, 6963 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 166.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3947 GetRequests, 3869 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58069occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 89744 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 14419 NumberOfCodeBlocks, 14419 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 14397 ConstructedInterpolants, 309 QuantifiedInterpolants, 49547387 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4712 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 21575/23322 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown