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_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:07:53,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:07:53,981 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:07:53,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:07:53,997 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:07:53,999 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:07:54,000 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:07:54,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:07:54,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:07:54,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:07:54,008 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:07:54,008 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:07:54,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:07:54,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:07:54,020 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:07:54,021 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:07:54,022 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:07:54,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:07:54,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:07:54,029 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:07:54,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:07:54,035 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:07:54,037 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:07:54,038 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:07:54,038 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:07:54,038 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:07:54,039 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:07:54,040 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:07:54,041 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:07:54,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:07:54,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:07:54,043 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 18:07:54,043 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 18:07:54,043 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 18:07:54,044 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 18:07:54,044 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 18:07:54,045 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:07:54,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:07:54,060 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:07:54,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:07:54,061 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:07:54,061 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:07:54,062 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:07:54,062 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:07:54,062 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:07:54,062 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:07:54,062 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:07:54,063 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:07:54,063 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:07:54,063 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:07:54,063 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:07:54,063 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:07:54,064 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:07:54,064 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:07:54,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:07:54,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:07:54,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:07:54,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:07:54,065 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:07:54,065 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:07:54,065 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:07:54,065 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:07:54,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:07:54,066 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:07:54,066 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:07:54,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:07:54,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:07:54,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:07:54,140 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:07:54,141 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:07:54,141 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-23 18:07:54,211 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27e58d19f/9850c886c51743c49eacadde8f14b526/FLAG414e4343f [2018-10-23 18:07:55,121 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:07:55,122 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-23 18:07:55,156 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27e58d19f/9850c886c51743c49eacadde8f14b526/FLAG414e4343f [2018-10-23 18:07:55,172 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27e58d19f/9850c886c51743c49eacadde8f14b526 [2018-10-23 18:07:55,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:07:55,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:07:55,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:07:55,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:07:55,191 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:07:55,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:07:55" (1/1) ... [2018-10-23 18:07:55,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9d0a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:55, skipping insertion in model container [2018-10-23 18:07:55,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:07:55" (1/1) ... [2018-10-23 18:07:55,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:07:55,383 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:07:56,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:07:56,831 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:07:57,511 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:07:57,548 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:07:57,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57 WrapperNode [2018-10-23 18:07:57,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:07:57,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:07:57,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:07:57,550 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:07:57,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:57,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:07:58,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:07:58,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:07:58,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:07:58,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... [2018-10-23 18:07:58,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:07:58,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:07:58,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:07:58,905 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:07:58,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:07:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:07:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:07:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:08:11,190 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:08:11,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:11 BoogieIcfgContainer [2018-10-23 18:08:11,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:08:11,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:08:11,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:08:11,196 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:08:11,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:07:55" (1/3) ... [2018-10-23 18:08:11,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f9cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:11, skipping insertion in model container [2018-10-23 18:08:11,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:07:57" (2/3) ... [2018-10-23 18:08:11,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f9cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:11, skipping insertion in model container [2018-10-23 18:08:11,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:11" (3/3) ... [2018-10-23 18:08:11,200 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-10-23 18:08:11,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:08:11,221 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:08:11,238 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:08:11,285 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:08:11,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:08:11,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:08:11,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:08:11,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:08:11,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:08:11,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:08:11,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:08:11,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:08:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:08:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 18:08:11,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:11,337 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:11,339 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:11,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:11,346 INFO L82 PathProgramCache]: Analyzing trace with hash -643220670, now seen corresponding path program 1 times [2018-10-23 18:08:11,348 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:11,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:11,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:11,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:11,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:11,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:11,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:11,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:11,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:11,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:11,734 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:08:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:26,660 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-23 18:08:26,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:26,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-10-23 18:08:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:26,708 INFO L225 Difference]: With dead ends: 3896 [2018-10-23 18:08:26,708 INFO L226 Difference]: Without dead ends: 2790 [2018-10-23 18:08:26,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-23 18:08:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-23 18:08:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-23 18:08:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-23 18:08:26,876 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 12 [2018-10-23 18:08:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:26,877 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-23 18:08:26,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-23 18:08:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-23 18:08:26,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:26,881 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:08:26,881 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:26,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 496408234, now seen corresponding path program 1 times [2018-10-23 18:08:26,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:26,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:26,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:26,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:26,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:27,486 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:08:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:27,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:27,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:27,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:08:27,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:08:27,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:27,769 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-23 18:08:28,026 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 18:08:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:43,890 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-23 18:08:43,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:08:43,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2018-10-23 18:08:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:43,917 INFO L225 Difference]: With dead ends: 7061 [2018-10-23 18:08:43,917 INFO L226 Difference]: Without dead ends: 5118 [2018-10-23 18:08:43,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:08:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-23 18:08:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-23 18:08:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-23 18:08:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-23 18:08:44,030 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 78 [2018-10-23 18:08:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:44,031 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-23 18:08:44,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:08:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-23 18:08:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 18:08:44,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:44,037 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:08:44,037 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:44,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -268071187, now seen corresponding path program 1 times [2018-10-23 18:08:44,038 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:44,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:44,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:44,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:44,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:44,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:44,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:08:44,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:44,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:44,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:44,253 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-10-23 18:08:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:50,021 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-10-23 18:08:50,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:08:50,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-10-23 18:08:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:50,048 INFO L225 Difference]: With dead ends: 10220 [2018-10-23 18:08:50,048 INFO L226 Difference]: Without dead ends: 5893 [2018-10-23 18:08:50,056 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 [2018-10-23 18:08:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-10-23 18:08:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-10-23 18:08:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-10-23 18:08:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-10-23 18:08:50,170 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 138 [2018-10-23 18:08:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:50,170 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-10-23 18:08:50,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:08:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-10-23 18:08:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-23 18:08:50,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:50,183 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:50,184 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:50,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:50,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1702259751, now seen corresponding path program 1 times [2018-10-23 18:08:50,189 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:50,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:50,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:50,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:50,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 18:08:50,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:08:50,589 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:08:50,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:50,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:08:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:50,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:08:50,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:08:50,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:08:50,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:08:50,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:50,889 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-10-23 18:09:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:06,313 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-10-23 18:09:06,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:09:06,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2018-10-23 18:09:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:06,371 INFO L225 Difference]: With dead ends: 20501 [2018-10-23 18:09:06,371 INFO L226 Difference]: Without dead ends: 15399 [2018-10-23 18:09:06,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-10-23 18:09:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-10-23 18:09:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-10-23 18:09:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-10-23 18:09:06,658 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 177 [2018-10-23 18:09:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:06,659 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-10-23 18:09:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:09:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-10-23 18:09:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-23 18:09:06,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:06,666 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:06,666 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:06,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash -507230826, now seen corresponding path program 1 times [2018-10-23 18:09:06,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:06,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:06,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:06,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:06,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-23 18:09:07,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:07,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:09:07,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:09:07,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:09:07,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:07,044 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-10-23 18:09:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:13,401 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-10-23 18:09:13,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:09:13,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-10-23 18:09:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:13,442 INFO L225 Difference]: With dead ends: 28343 [2018-10-23 18:09:13,442 INFO L226 Difference]: Without dead ends: 18506 [2018-10-23 18:09:13,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-10-23 18:09:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-10-23 18:09:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-10-23 18:09:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-10-23 18:09:13,720 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 188 [2018-10-23 18:09:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:13,721 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-10-23 18:09:13,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:09:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-10-23 18:09:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-23 18:09:13,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:13,726 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:13,726 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:13,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash 191537317, now seen corresponding path program 1 times [2018-10-23 18:09:13,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:13,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:13,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:13,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:13,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 18:09:14,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:14,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:09:14,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:09:14,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:09:14,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:14,126 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 5 states. [2018-10-23 18:09:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:29,920 INFO L93 Difference]: Finished difference Result 82743 states and 99665 transitions. [2018-10-23 18:09:29,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:09:29,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-10-23 18:09:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:30,005 INFO L225 Difference]: With dead ends: 82743 [2018-10-23 18:09:30,005 INFO L226 Difference]: Without dead ends: 63436 [2018-10-23 18:09:30,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63436 states. [2018-10-23 18:09:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63436 to 62622. [2018-10-23 18:09:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62622 states. [2018-10-23 18:09:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62622 states to 62622 states and 70799 transitions. [2018-10-23 18:09:30,836 INFO L78 Accepts]: Start accepts. Automaton has 62622 states and 70799 transitions. Word has length 226 [2018-10-23 18:09:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:30,837 INFO L481 AbstractCegarLoop]: Abstraction has 62622 states and 70799 transitions. [2018-10-23 18:09:30,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:09:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 62622 states and 70799 transitions. [2018-10-23 18:09:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-23 18:09:30,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:30,846 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:30,846 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:30,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:30,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1083857174, now seen corresponding path program 1 times [2018-10-23 18:09:30,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:30,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:30,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:30,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:30,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:09:31,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:31,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:31,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:31,548 INFO L87 Difference]: Start difference. First operand 62622 states and 70799 transitions. Second operand 4 states. [2018-10-23 18:09:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:40,053 INFO L93 Difference]: Finished difference Result 129949 states and 147498 transitions. [2018-10-23 18:09:40,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:40,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2018-10-23 18:09:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:40,181 INFO L225 Difference]: With dead ends: 129949 [2018-10-23 18:09:40,181 INFO L226 Difference]: Without dead ends: 68117 [2018-10-23 18:09:40,235 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 [2018-10-23 18:09:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68117 states. [2018-10-23 18:09:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68117 to 68116. [2018-10-23 18:09:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68116 states. [2018-10-23 18:09:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68116 states to 68116 states and 74519 transitions. [2018-10-23 18:09:40,942 INFO L78 Accepts]: Start accepts. Automaton has 68116 states and 74519 transitions. Word has length 329 [2018-10-23 18:09:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:40,942 INFO L481 AbstractCegarLoop]: Abstraction has 68116 states and 74519 transitions. [2018-10-23 18:09:40,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 68116 states and 74519 transitions. [2018-10-23 18:09:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-10-23 18:09:40,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:40,972 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:40,972 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:40,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash 212774782, now seen corresponding path program 1 times [2018-10-23 18:09:40,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:40,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:40,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:40,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:40,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:41,486 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 18:09:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-23 18:09:42,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:42,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:42,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:09:42,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:09:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:42,217 INFO L87 Difference]: Start difference. First operand 68116 states and 74519 transitions. Second operand 5 states. [2018-10-23 18:09:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:59,421 INFO L93 Difference]: Finished difference Result 251505 states and 273949 transitions. [2018-10-23 18:09:59,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:09:59,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 557 [2018-10-23 18:09:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:59,744 INFO L225 Difference]: With dead ends: 251505 [2018-10-23 18:09:59,745 INFO L226 Difference]: Without dead ends: 184179 [2018-10-23 18:09:59,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184179 states. [2018-10-23 18:10:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184179 to 170629. [2018-10-23 18:10:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170629 states. [2018-10-23 18:10:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170629 states to 170629 states and 183745 transitions. [2018-10-23 18:10:01,337 INFO L78 Accepts]: Start accepts. Automaton has 170629 states and 183745 transitions. Word has length 557 [2018-10-23 18:10:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:01,337 INFO L481 AbstractCegarLoop]: Abstraction has 170629 states and 183745 transitions. [2018-10-23 18:10:01,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:10:01,338 INFO L276 IsEmpty]: Start isEmpty. Operand 170629 states and 183745 transitions. [2018-10-23 18:10:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-23 18:10:01,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:01,379 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:10:01,379 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:01,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash -396182786, now seen corresponding path program 1 times [2018-10-23 18:10:01,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:01,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:01,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:01,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:01,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-23 18:10:01,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:01,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:10:01,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:01,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:01,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:01,867 INFO L87 Difference]: Start difference. First operand 170629 states and 183745 transitions. Second operand 4 states. [2018-10-23 18:10:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:10,026 INFO L93 Difference]: Finished difference Result 350713 states and 377543 transitions. [2018-10-23 18:10:10,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:10,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 598 [2018-10-23 18:10:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:10,209 INFO L225 Difference]: With dead ends: 350713 [2018-10-23 18:10:10,210 INFO L226 Difference]: Without dead ends: 163481 [2018-10-23 18:10:10,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163481 states. [2018-10-23 18:10:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163481 to 154812. [2018-10-23 18:10:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154812 states. [2018-10-23 18:10:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154812 states to 154812 states and 165688 transitions. [2018-10-23 18:10:11,738 INFO L78 Accepts]: Start accepts. Automaton has 154812 states and 165688 transitions. Word has length 598 [2018-10-23 18:10:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:11,738 INFO L481 AbstractCegarLoop]: Abstraction has 154812 states and 165688 transitions. [2018-10-23 18:10:11,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 154812 states and 165688 transitions. [2018-10-23 18:10:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-23 18:10:11,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:11,761 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:10:11,761 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:11,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:11,762 INFO L82 PathProgramCache]: Analyzing trace with hash -881230806, now seen corresponding path program 1 times [2018-10-23 18:10:11,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:11,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:11,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-23 18:10:13,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:13,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:13,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:13,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:13,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:13,010 INFO L87 Difference]: Start difference. First operand 154812 states and 165688 transitions. Second operand 4 states. [2018-10-23 18:10:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:26,731 INFO L93 Difference]: Finished difference Result 338008 states and 361923 transitions. [2018-10-23 18:10:26,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:26,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 647 [2018-10-23 18:10:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:26,962 INFO L225 Difference]: With dead ends: 338008 [2018-10-23 18:10:26,962 INFO L226 Difference]: Without dead ends: 182405 [2018-10-23 18:10:27,068 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 [2018-10-23 18:10:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182405 states. [2018-10-23 18:10:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182405 to 179219. [2018-10-23 18:10:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179219 states. [2018-10-23 18:10:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179219 states to 179219 states and 188317 transitions. [2018-10-23 18:10:29,438 INFO L78 Accepts]: Start accepts. Automaton has 179219 states and 188317 transitions. Word has length 647 [2018-10-23 18:10:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:29,439 INFO L481 AbstractCegarLoop]: Abstraction has 179219 states and 188317 transitions. [2018-10-23 18:10:29,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 179219 states and 188317 transitions. [2018-10-23 18:10:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-10-23 18:10:29,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:29,459 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2018-10-23 18:10:29,459 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:29,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -416570515, now seen corresponding path program 1 times [2018-10-23 18:10:29,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:29,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:29,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:29,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:29,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-23 18:10:30,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:30,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:30,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:30,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:30,148 INFO L87 Difference]: Start difference. First operand 179219 states and 188317 transitions. Second operand 4 states. [2018-10-23 18:10:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:43,181 INFO L93 Difference]: Finished difference Result 392400 states and 412584 transitions. [2018-10-23 18:10:43,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:43,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 658 [2018-10-23 18:10:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:43,423 INFO L225 Difference]: With dead ends: 392400 [2018-10-23 18:10:43,424 INFO L226 Difference]: Without dead ends: 213971 [2018-10-23 18:10:43,544 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 [2018-10-23 18:10:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213971 states. [2018-10-23 18:10:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213971 to 209955. [2018-10-23 18:10:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209955 states. [2018-10-23 18:10:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209955 states to 209955 states and 220408 transitions. [2018-10-23 18:10:46,440 INFO L78 Accepts]: Start accepts. Automaton has 209955 states and 220408 transitions. Word has length 658 [2018-10-23 18:10:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:46,440 INFO L481 AbstractCegarLoop]: Abstraction has 209955 states and 220408 transitions. [2018-10-23 18:10:46,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 209955 states and 220408 transitions. [2018-10-23 18:10:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-10-23 18:10:46,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:46,459 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:10:46,460 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:46,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash 277874540, now seen corresponding path program 1 times [2018-10-23 18:10:46,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:46,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:46,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:46,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:46,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:47,013 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:10:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-23 18:10:47,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:47,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:47,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:47,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:47,202 INFO L87 Difference]: Start difference. First operand 209955 states and 220408 transitions. Second operand 4 states. [2018-10-23 18:10:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:57,595 INFO L93 Difference]: Finished difference Result 415991 states and 436771 transitions. [2018-10-23 18:10:57,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:57,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 688 [2018-10-23 18:10:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:57,856 INFO L225 Difference]: With dead ends: 415991 [2018-10-23 18:10:57,856 INFO L226 Difference]: Without dead ends: 206826 [2018-10-23 18:10:57,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206826 states. [2018-10-23 18:11:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206826 to 193396. [2018-10-23 18:11:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193396 states. [2018-10-23 18:11:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193396 states to 193396 states and 199876 transitions. [2018-10-23 18:11:00,847 INFO L78 Accepts]: Start accepts. Automaton has 193396 states and 199876 transitions. Word has length 688 [2018-10-23 18:11:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:00,848 INFO L481 AbstractCegarLoop]: Abstraction has 193396 states and 199876 transitions. [2018-10-23 18:11:00,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:11:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 193396 states and 199876 transitions. [2018-10-23 18:11:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-10-23 18:11:00,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:00,869 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:11:00,869 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:00,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:00,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1260312391, now seen corresponding path program 1 times [2018-10-23 18:11:00,870 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:00,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:00,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:00,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:00,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 484 proven. 287 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-23 18:11:03,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:11:03,227 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:11:03,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:03,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:11:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2018-10-23 18:11:09,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:11:09,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:11:09,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:11:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:11:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:11:09,284 INFO L87 Difference]: Start difference. First operand 193396 states and 199876 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 18:11:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 18:11:47,216 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:11:47,222 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:11:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:11:47 BoogieIcfgContainer [2018-10-23 18:11:47,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:11:47,223 INFO L168 Benchmark]: Toolchain (without parser) took 232038.96 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -592.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,225 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:11:47,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2362.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 899.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,227 INFO L168 Benchmark]: Boogie Preprocessor took 455.01 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: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,228 INFO L168 Benchmark]: RCFGBuilder took 12286.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 246.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 16.2 MB). Peak memory consumption was 587.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,233 INFO L168 Benchmark]: TraceAbstraction took 216030.47 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 81.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:11:47,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2362.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 899.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 455.01 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: 80.3 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12286.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 246.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 16.2 MB). Peak memory consumption was 587.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216030.47 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 81.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (193396states) and FLOYD_HOARE automaton (currently 16 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (419909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 185.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9968 SDtfs, 37522 SDslu, 3368 SDs, 0 SdLazy, 75484 SolverSat, 16992 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 151.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1028 GetRequests, 982 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209955occurred 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: 13.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 49286 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 6055 NumberOfCodeBlocks, 6055 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6040 ConstructedInterpolants, 90 QuantifiedInterpolants, 7461361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1248 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6222/6575 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown