java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:08:32,988 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:08:32,990 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:08:33,006 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:08:33,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:08:33,008 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:08:33,014 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:08:33,016 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:08:33,019 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:08:33,020 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:08:33,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:08:33,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:08:33,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:08:33,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:08:33,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:08:33,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:08:33,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:08:33,039 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:08:33,044 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:08:33,047 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:08:33,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:08:33,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:08:33,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:08:33,053 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:08:33,053 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:08:33,054 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:08:33,058 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:08:33,059 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:08:33,061 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:08:33,063 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:08:33,064 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:08:33,065 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:08:33,070 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 14:08:33,095 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:08:33,096 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:08:33,097 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:08:33,097 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:08:33,097 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:08:33,099 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:08:33,099 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:08:33,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:08:33,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:08:33,100 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:08:33,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:08:33,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:08:33,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:08:33,103 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:08:33,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:33,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:08:33,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:08:33,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:08:33,104 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:08:33,104 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:08:33,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:08:33,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:08:33,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:08:33,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:08:33,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:08:33,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:08:33,169 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:08:33,170 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:08:33,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c [2018-10-24 14:08:33,226 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/412302925/dcf2f32e20b049d4abf57d58923c4eff/FLAG4f7ba6582 [2018-10-24 14:08:34,012 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:08:34,013 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c [2018-10-24 14:08:34,046 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/412302925/dcf2f32e20b049d4abf57d58923c4eff/FLAG4f7ba6582 [2018-10-24 14:08:34,062 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/412302925/dcf2f32e20b049d4abf57d58923c4eff [2018-10-24 14:08:34,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:08:34,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:08:34,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:34,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:08:34,081 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:08:34,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:34,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1462e15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34, skipping insertion in model container [2018-10-24 14:08:34,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:34,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:08:34,277 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:08:35,847 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:35,854 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:08:36,631 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:36,668 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:08:36,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36 WrapperNode [2018-10-24 14:08:36,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:36,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:36,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:08:36,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:08:36,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:36,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:37,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:08:37,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:08:37,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:08:37,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:37,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:38,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (1/1) ... [2018-10-24 14:08:38,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:08:38,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:08:38,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:08:38,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:08:38,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (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 14:08:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:08:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:08:38,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:08:55,090 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:08:55,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:55 BoogieIcfgContainer [2018-10-24 14:08:55,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:08:55,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:08:55,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:08:55,096 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:08:55,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:08:34" (1/3) ... [2018-10-24 14:08:55,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6fb6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:55, skipping insertion in model container [2018-10-24 14:08:55,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:36" (2/3) ... [2018-10-24 14:08:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6fb6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:55, skipping insertion in model container [2018-10-24 14:08:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:55" (3/3) ... [2018-10-24 14:08:55,104 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23_false-unreach-call.c [2018-10-24 14:08:55,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:08:55,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:08:55,138 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:08:55,185 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:08:55,185 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:08:55,186 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:08:55,186 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:08:55,186 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:08:55,186 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:08:55,186 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:08:55,186 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:08:55,186 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:08:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:08:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 14:08:55,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:55,235 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:55,238 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:55,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-24 14:08:55,245 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:55,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:55,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:55,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:55,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:55,605 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:08:55,608 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 14:08:55,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:55,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:08:55,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:55,636 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:09:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:12,011 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-24 14:09:12,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:12,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-24 14:09:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:12,061 INFO L225 Difference]: With dead ends: 3863 [2018-10-24 14:09:12,061 INFO L226 Difference]: Without dead ends: 2757 [2018-10-24 14:09:12,070 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 14:09:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-24 14:09:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-24 14:09:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-24 14:09:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-24 14:09:12,225 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 14 [2018-10-24 14:09:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:12,226 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-24 14:09:12,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-24 14:09:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 14:09:12,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:12,231 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:12,231 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:12,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1382153005, now seen corresponding path program 1 times [2018-10-24 14:09:12,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:12,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:12,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:12,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:12,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:12,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:12,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:12,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:12,727 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-24 14:09:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:25,595 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-24 14:09:25,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:25,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-24 14:09:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:25,638 INFO L225 Difference]: With dead ends: 10268 [2018-10-24 14:09:25,638 INFO L226 Difference]: Without dead ends: 7534 [2018-10-24 14:09:25,644 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 14:09:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-24 14:09:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-24 14:09:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-24 14:09:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-24 14:09:25,799 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 101 [2018-10-24 14:09:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:25,800 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-24 14:09:25,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-24 14:09:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 14:09:25,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:25,804 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:25,804 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:25,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:25,804 INFO L82 PathProgramCache]: Analyzing trace with hash 246824780, now seen corresponding path program 1 times [2018-10-24 14:09:25,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:25,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:25,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:25,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:25,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:26,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:26,217 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 14:09:26,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:26,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:26,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:26,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:09:26,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:09:26,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:09:26,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:09:26,598 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 6 states. [2018-10-24 14:09:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:55,378 INFO L93 Difference]: Finished difference Result 57105 states and 87088 transitions. [2018-10-24 14:09:55,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:09:55,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 14:09:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:55,526 INFO L225 Difference]: With dead ends: 57105 [2018-10-24 14:09:55,527 INFO L226 Difference]: Without dead ends: 49579 [2018-10-24 14:09:55,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:09:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49579 states. [2018-10-24 14:09:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49579 to 49409. [2018-10-24 14:09:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49409 states. [2018-10-24 14:09:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49409 states to 49409 states and 67025 transitions. [2018-10-24 14:09:56,416 INFO L78 Accepts]: Start accepts. Automaton has 49409 states and 67025 transitions. Word has length 111 [2018-10-24 14:09:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:56,417 INFO L481 AbstractCegarLoop]: Abstraction has 49409 states and 67025 transitions. [2018-10-24 14:09:56,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:09:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 49409 states and 67025 transitions. [2018-10-24 14:09:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 14:09:56,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:56,444 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:56,444 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:56,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash -674539072, now seen corresponding path program 1 times [2018-10-24 14:09:56,445 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:56,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:56,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:56,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:56,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:57,021 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 14:09:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 14:09:57,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:57,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:57,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:57,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:57,107 INFO L87 Difference]: Start difference. First operand 49409 states and 67025 transitions. Second operand 4 states. [2018-10-24 14:10:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:08,944 INFO L93 Difference]: Finished difference Result 122514 states and 162273 transitions. [2018-10-24 14:10:08,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:08,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-24 14:10:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:09,084 INFO L225 Difference]: With dead ends: 122514 [2018-10-24 14:10:09,085 INFO L226 Difference]: Without dead ends: 73107 [2018-10-24 14:10:09,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73107 states. [2018-10-24 14:10:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73107 to 63593. [2018-10-24 14:10:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63593 states. [2018-10-24 14:10:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63593 states to 63593 states and 82894 transitions. [2018-10-24 14:10:10,015 INFO L78 Accepts]: Start accepts. Automaton has 63593 states and 82894 transitions. Word has length 248 [2018-10-24 14:10:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:10,015 INFO L481 AbstractCegarLoop]: Abstraction has 63593 states and 82894 transitions. [2018-10-24 14:10:10,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 63593 states and 82894 transitions. [2018-10-24 14:10:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-24 14:10:10,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:10,027 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:10,027 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:10,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:10,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1912931644, now seen corresponding path program 1 times [2018-10-24 14:10:10,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:10,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:10,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:10,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:10,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:10,424 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:10:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:10:10,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:10,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:10:10,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:10,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:10,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:10,503 INFO L87 Difference]: Start difference. First operand 63593 states and 82894 transitions. Second operand 4 states. [2018-10-24 14:10:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:22,517 INFO L93 Difference]: Finished difference Result 217008 states and 282948 transitions. [2018-10-24 14:10:22,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:22,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-10-24 14:10:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:22,661 INFO L225 Difference]: With dead ends: 217008 [2018-10-24 14:10:22,661 INFO L226 Difference]: Without dead ends: 124158 [2018-10-24 14:10:22,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124158 states. [2018-10-24 14:10:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124158 to 118635. [2018-10-24 14:10:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118635 states. [2018-10-24 14:10:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118635 states to 118635 states and 137509 transitions. [2018-10-24 14:10:23,973 INFO L78 Accepts]: Start accepts. Automaton has 118635 states and 137509 transitions. Word has length 257 [2018-10-24 14:10:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:23,974 INFO L481 AbstractCegarLoop]: Abstraction has 118635 states and 137509 transitions. [2018-10-24 14:10:23,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 118635 states and 137509 transitions. [2018-10-24 14:10:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-24 14:10:23,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:23,984 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:10:23,984 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:23,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash 967060679, now seen corresponding path program 1 times [2018-10-24 14:10:23,985 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:23,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:23,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:23,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:23,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:24,483 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-24 14:10:24,913 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2018-10-24 14:10:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 14:10:25,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:25,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:25,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:25,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:25,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:25,865 INFO L87 Difference]: Start difference. First operand 118635 states and 137509 transitions. Second operand 5 states. [2018-10-24 14:10:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:39,032 INFO L93 Difference]: Finished difference Result 246743 states and 285163 transitions. [2018-10-24 14:10:39,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:39,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2018-10-24 14:10:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:39,162 INFO L225 Difference]: With dead ends: 246743 [2018-10-24 14:10:39,162 INFO L226 Difference]: Without dead ends: 128898 [2018-10-24 14:10:39,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128898 states. [2018-10-24 14:10:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128898 to 128882. [2018-10-24 14:10:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128882 states. [2018-10-24 14:10:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128882 states to 128882 states and 148041 transitions. [2018-10-24 14:10:41,186 INFO L78 Accepts]: Start accepts. Automaton has 128882 states and 148041 transitions. Word has length 316 [2018-10-24 14:10:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:41,186 INFO L481 AbstractCegarLoop]: Abstraction has 128882 states and 148041 transitions. [2018-10-24 14:10:41,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 128882 states and 148041 transitions. [2018-10-24 14:10:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-24 14:10:41,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:41,198 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:41,198 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:41,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:41,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1010892797, now seen corresponding path program 1 times [2018-10-24 14:10:41,198 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:41,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:41,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:41,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:41,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 14:10:41,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:41,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:41,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:41,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:41,676 INFO L87 Difference]: Start difference. First operand 128882 states and 148041 transitions. Second operand 4 states. [2018-10-24 14:10:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:53,595 INFO L93 Difference]: Finished difference Result 286961 states and 331371 transitions. [2018-10-24 14:10:53,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:53,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 383 [2018-10-24 14:10:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:53,750 INFO L225 Difference]: With dead ends: 286961 [2018-10-24 14:10:53,750 INFO L226 Difference]: Without dead ends: 158869 [2018-10-24 14:10:53,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158869 states. [2018-10-24 14:10:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158869 to 148573. [2018-10-24 14:10:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148573 states. [2018-10-24 14:10:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148573 states to 148573 states and 165941 transitions. [2018-10-24 14:10:55,159 INFO L78 Accepts]: Start accepts. Automaton has 148573 states and 165941 transitions. Word has length 383 [2018-10-24 14:10:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:55,159 INFO L481 AbstractCegarLoop]: Abstraction has 148573 states and 165941 transitions. [2018-10-24 14:10:55,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 148573 states and 165941 transitions. [2018-10-24 14:10:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-24 14:10:55,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:55,165 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:55,166 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:55,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1970013513, now seen corresponding path program 1 times [2018-10-24 14:10:55,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:55,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:55,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:55,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:55,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-24 14:10:55,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:55,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:55,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:55,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:55,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:55,588 INFO L87 Difference]: Start difference. First operand 148573 states and 165941 transitions. Second operand 4 states. [2018-10-24 14:11:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:08,699 INFO L93 Difference]: Finished difference Result 321595 states and 360574 transitions. [2018-10-24 14:11:08,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:08,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2018-10-24 14:11:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:08,925 INFO L225 Difference]: With dead ends: 321595 [2018-10-24 14:11:08,926 INFO L226 Difference]: Without dead ends: 173812 [2018-10-24 14:11:09,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173812 states. [2018-10-24 14:11:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173812 to 171419. [2018-10-24 14:11:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171419 states. [2018-10-24 14:11:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171419 states to 171419 states and 186567 transitions. [2018-10-24 14:11:11,940 INFO L78 Accepts]: Start accepts. Automaton has 171419 states and 186567 transitions. Word has length 413 [2018-10-24 14:11:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:11,940 INFO L481 AbstractCegarLoop]: Abstraction has 171419 states and 186567 transitions. [2018-10-24 14:11:11,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 171419 states and 186567 transitions. [2018-10-24 14:11:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-24 14:11:11,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:11,950 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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 14:11:11,950 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:11,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:11,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1924570743, now seen corresponding path program 1 times [2018-10-24 14:11:11,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:11,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:11,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-10-24 14:11:12,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:12,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:11:12,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:11:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:11:12,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:11:12,530 INFO L87 Difference]: Start difference. First operand 171419 states and 186567 transitions. Second operand 3 states. [2018-10-24 14:11:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:20,659 INFO L93 Difference]: Finished difference Result 341258 states and 371547 transitions. [2018-10-24 14:11:20,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:11:20,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2018-10-24 14:11:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:20,860 INFO L225 Difference]: With dead ends: 341258 [2018-10-24 14:11:20,860 INFO L226 Difference]: Without dead ends: 170629 [2018-10-24 14:11:20,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 5 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 14:11:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170629 states. [2018-10-24 14:11:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170629 to 158802. [2018-10-24 14:11:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158802 states. [2018-10-24 14:11:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158802 states to 158802 states and 169532 transitions. [2018-10-24 14:11:23,652 INFO L78 Accepts]: Start accepts. Automaton has 158802 states and 169532 transitions. Word has length 473 [2018-10-24 14:11:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:23,653 INFO L481 AbstractCegarLoop]: Abstraction has 158802 states and 169532 transitions. [2018-10-24 14:11:23,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:11:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 158802 states and 169532 transitions. [2018-10-24 14:11:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-24 14:11:23,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:23,696 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:23,697 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:23,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1267048652, now seen corresponding path program 1 times [2018-10-24 14:11:23,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:23,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:23,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:24,246 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 14:11:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 502 proven. 12 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-10-24 14:11:24,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:11:24,798 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 14:11:29,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:29,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:11:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-10-24 14:11:29,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:11:29,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 14:11:29,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:11:29,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:11:29,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:11:29,781 INFO L87 Difference]: Start difference. First operand 158802 states and 169532 transitions. Second operand 6 states. [2018-10-24 14:11:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:44,997 INFO L93 Difference]: Finished difference Result 458823 states and 492052 transitions. [2018-10-24 14:11:45,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:11:45,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 788 [2018-10-24 14:11:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:45,350 INFO L225 Difference]: With dead ends: 458823 [2018-10-24 14:11:45,350 INFO L226 Difference]: Without dead ends: 300811 [2018-10-24 14:11:45,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 788 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:11:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300811 states. [2018-10-24 14:11:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300811 to 188731. [2018-10-24 14:11:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188731 states. [2018-10-24 14:11:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188731 states to 188731 states and 199881 transitions. [2018-10-24 14:11:48,548 INFO L78 Accepts]: Start accepts. Automaton has 188731 states and 199881 transitions. Word has length 788 [2018-10-24 14:11:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:48,549 INFO L481 AbstractCegarLoop]: Abstraction has 188731 states and 199881 transitions. [2018-10-24 14:11:48,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:11:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 188731 states and 199881 transitions. [2018-10-24 14:11:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-24 14:11:48,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:48,585 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:48,585 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:48,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:48,586 INFO L82 PathProgramCache]: Analyzing trace with hash -360233870, now seen corresponding path program 1 times [2018-10-24 14:11:48,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:48,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:48,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:48,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:48,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-10-24 14:11:49,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:49,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:49,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:49,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:49,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:49,793 INFO L87 Difference]: Start difference. First operand 188731 states and 199881 transitions. Second operand 4 states. [2018-10-24 14:12:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:03,222 INFO L93 Difference]: Finished difference Result 439840 states and 466632 transitions. [2018-10-24 14:12:03,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:03,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 788 [2018-10-24 14:12:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:03,517 INFO L225 Difference]: With dead ends: 439840 [2018-10-24 14:12:03,517 INFO L226 Difference]: Without dead ends: 251899 [2018-10-24 14:12:03,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251899 states. [2018-10-24 14:12:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251899 to 244689. [2018-10-24 14:12:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244689 states. [2018-10-24 14:12:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244689 states to 244689 states and 259584 transitions. [2018-10-24 14:12:06,989 INFO L78 Accepts]: Start accepts. Automaton has 244689 states and 259584 transitions. Word has length 788 [2018-10-24 14:12:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:06,990 INFO L481 AbstractCegarLoop]: Abstraction has 244689 states and 259584 transitions. [2018-10-24 14:12:06,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 244689 states and 259584 transitions. [2018-10-24 14:12:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-10-24 14:12:07,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:07,017 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:07,018 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:07,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 883708017, now seen corresponding path program 1 times [2018-10-24 14:12:07,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:07,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:07,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:07,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:07,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-24 14:12:08,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:08,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:08,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:08,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:08,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:08,033 INFO L87 Difference]: Start difference. First operand 244689 states and 259584 transitions. Second operand 4 states. [2018-10-24 14:12:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:17,598 INFO L93 Difference]: Finished difference Result 490149 states and 520415 transitions. [2018-10-24 14:12:17,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:17,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 818 [2018-10-24 14:12:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:17,879 INFO L225 Difference]: With dead ends: 490149 [2018-10-24 14:12:17,880 INFO L226 Difference]: Without dead ends: 246250 [2018-10-24 14:12:17,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246250 states. [2018-10-24 14:12:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246250 to 239154. [2018-10-24 14:12:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239154 states. [2018-10-24 14:12:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239154 states to 239154 states and 252383 transitions. [2018-10-24 14:12:21,105 INFO L78 Accepts]: Start accepts. Automaton has 239154 states and 252383 transitions. Word has length 818 [2018-10-24 14:12:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:21,106 INFO L481 AbstractCegarLoop]: Abstraction has 239154 states and 252383 transitions. [2018-10-24 14:12:21,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 239154 states and 252383 transitions. [2018-10-24 14:12:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2018-10-24 14:12:21,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:21,180 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:12:21,180 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:21,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -144560775, now seen corresponding path program 1 times [2018-10-24 14:12:21,181 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:21,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:21,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:21,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:21,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:21,878 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 Received shutdown request... [2018-10-24 14:12:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-10-24 14:12:23,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:23,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:23,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:23,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:23,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:23,410 INFO L87 Difference]: Start difference. First operand 239154 states and 252383 transitions. Second operand 4 states. [2018-10-24 14:12:23,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:12:23,412 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:12:23,419 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:12:23,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:12:23 BoogieIcfgContainer [2018-10-24 14:12:23,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:12:23,421 INFO L168 Benchmark]: Toolchain (without parser) took 229346.54 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -342.3 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,422 INFO L168 Benchmark]: CDTParser took 0.21 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 14:12:23,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2592.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 846.78 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,425 INFO L168 Benchmark]: Boogie Preprocessor took 625.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,426 INFO L168 Benchmark]: RCFGBuilder took 16949.01 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 56.8 MB). Peak memory consumption was 587.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,428 INFO L168 Benchmark]: TraceAbstraction took 208327.25 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:23,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2592.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 846.78 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 625.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16949.01 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 56.8 MB). Peak memory consumption was 587.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208327.25 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (239154states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 169.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8760 SDtfs, 29338 SDslu, 3590 SDs, 0 SdLazy, 67165 SolverSat, 16240 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 133.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 969 GetRequests, 921 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244689occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 166152 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 6662 NumberOfCodeBlocks, 6662 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6647 ConstructedInterpolants, 0 QuantifiedInterpolants, 8822545 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1155 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 7609/7628 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown