java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:44:42,207 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:44:42,209 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:44:42,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:44:42,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:44:42,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:44:42,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:44:42,226 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:44:42,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:44:42,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:44:42,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:44:42,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:44:42,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:44:42,232 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:44:42,233 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:44:42,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:44:42,235 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:44:42,237 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:44:42,239 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:44:42,240 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:44:42,241 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:44:42,243 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:44:42,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:44:42,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:44:42,246 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:44:42,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:44:42,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:44:42,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:44:42,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:44:42,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:44:42,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:44:42,252 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:44:42,258 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:44:42,291 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:44:42,291 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:44:42,292 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:44:42,292 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:44:42,293 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:44:42,293 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:44:42,293 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:44:42,294 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:44:42,294 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:44:42,294 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:44:42,294 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:44:42,294 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:44:42,294 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:44:42,295 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:44:42,295 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:44:42,295 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:44:42,295 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:44:42,295 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:44:42,296 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:44:42,296 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:44:42,296 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:44:42,296 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:44:42,296 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:44:42,297 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:44:42,297 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:44:42,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:44:42,297 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:44:42,297 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:44:42,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:44:42,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:44:42,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:44:42,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:44:42,399 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:44:42,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-10-24 16:44:42,463 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f80112be/4bbe1c78c6d445c0a1ab780d6ba68eca/FLAG370fb6221 [2018-10-24 16:44:43,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:44:43,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-10-24 16:44:43,253 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f80112be/4bbe1c78c6d445c0a1ab780d6ba68eca/FLAG370fb6221 [2018-10-24 16:44:43,277 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f80112be/4bbe1c78c6d445c0a1ab780d6ba68eca [2018-10-24 16:44:43,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:44:43,289 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:44:43,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:43,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:44:43,295 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:44:43,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:43" (1/1) ... [2018-10-24 16:44:43,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:43, skipping insertion in model container [2018-10-24 16:44:43,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:43" (1/1) ... [2018-10-24 16:44:43,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:44:43,431 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:44:44,430 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:44,434 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:44:44,829 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:44,853 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:44:44,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44 WrapperNode [2018-10-24 16:44:44,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:44,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:44,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:44:44,856 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:44:44,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:44,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:45,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:44:45,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:44:45,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:44:45,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... [2018-10-24 16:44:45,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:44:45,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:44:45,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:44:45,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:44:45,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:44:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:44:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:44:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:44:54,739 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:44:54,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:54 BoogieIcfgContainer [2018-10-24 16:44:54,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:44:54,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:44:54,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:44:54,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:44:54,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:44:43" (1/3) ... [2018-10-24 16:44:54,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:54, skipping insertion in model container [2018-10-24 16:44:54,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:44" (2/3) ... [2018-10-24 16:44:54,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:54, skipping insertion in model container [2018-10-24 16:44:54,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:54" (3/3) ... [2018-10-24 16:44:54,749 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-10-24 16:44:54,757 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:44:54,767 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:44:54,785 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:44:54,827 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:44:54,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:44:54,828 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:44:54,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:44:54,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:44:54,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:44:54,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:44:54,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:44:54,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:44:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:44:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 16:44:54,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:54,878 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:44:54,881 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:54,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-10-24 16:44:54,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:54,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:54,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:54,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:54,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:44:55,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:55,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:55,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:44:55,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:44:55,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:55,404 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:45:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:08,448 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-10-24 16:45:08,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:45:08,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-24 16:45:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:08,493 INFO L225 Difference]: With dead ends: 2099 [2018-10-24 16:45:08,493 INFO L226 Difference]: Without dead ends: 1501 [2018-10-24 16:45:08,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:45:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-10-24 16:45:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-10-24 16:45:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-10-24 16:45:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-10-24 16:45:08,642 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 57 [2018-10-24 16:45:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:08,642 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-10-24 16:45:08,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:45:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-10-24 16:45:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 16:45:08,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:08,653 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:08,653 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:08,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:08,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1939256122, now seen corresponding path program 1 times [2018-10-24 16:45:08,654 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:08,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:08,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:08,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:08,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:09,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:09,077 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:09,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:09,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:09,736 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-10-24 16:45:10,374 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-10-24 16:45:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:11,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:45:11,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-24 16:45:11,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:45:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:45:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:45:11,956 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 8 states. [2018-10-24 16:45:15,533 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-24 16:45:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:40,297 INFO L93 Difference]: Finished difference Result 13769 states and 22993 transitions. [2018-10-24 16:45:40,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:45:40,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2018-10-24 16:45:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:40,337 INFO L225 Difference]: With dead ends: 13769 [2018-10-24 16:45:40,337 INFO L226 Difference]: Without dead ends: 6169 [2018-10-24 16:45:40,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 26 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:45:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2018-10-24 16:45:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6141. [2018-10-24 16:45:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2018-10-24 16:45:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7326 transitions. [2018-10-24 16:45:40,466 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7326 transitions. Word has length 128 [2018-10-24 16:45:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:40,467 INFO L481 AbstractCegarLoop]: Abstraction has 6141 states and 7326 transitions. [2018-10-24 16:45:40,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:45:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7326 transitions. [2018-10-24 16:45:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-24 16:45:40,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:40,476 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:45:40,476 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:40,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1775134901, now seen corresponding path program 1 times [2018-10-24 16:45:40,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:40,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:40,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:40,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:40,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:40,877 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:45:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:40,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:45:40,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:45:40,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:45:40,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:45:40,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:45:40,920 INFO L87 Difference]: Start difference. First operand 6141 states and 7326 transitions. Second operand 4 states. [2018-10-24 16:45:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:45,333 INFO L93 Difference]: Finished difference Result 17393 states and 21253 transitions. [2018-10-24 16:45:45,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:45:45,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-10-24 16:45:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:45,385 INFO L225 Difference]: With dead ends: 17393 [2018-10-24 16:45:45,386 INFO L226 Difference]: Without dead ends: 11681 [2018-10-24 16:45:45,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 16:45:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11681 states. [2018-10-24 16:45:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11681 to 11681. [2018-10-24 16:45:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11681 states. [2018-10-24 16:45:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 13632 transitions. [2018-10-24 16:45:45,612 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 13632 transitions. Word has length 230 [2018-10-24 16:45:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:45,613 INFO L481 AbstractCegarLoop]: Abstraction has 11681 states and 13632 transitions. [2018-10-24 16:45:45,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:45:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 13632 transitions. [2018-10-24 16:45:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-24 16:45:45,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:45,622 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-24 16:45:45,623 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:45,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2119976369, now seen corresponding path program 1 times [2018-10-24 16:45:45,623 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:45,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:45,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:45,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:45,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:45:46,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:46,369 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:46,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:46,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:45:47,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:45:47,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-10-24 16:45:47,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:45:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:45:47,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:45:47,018 INFO L87 Difference]: Start difference. First operand 11681 states and 13632 transitions. Second operand 8 states. [2018-10-24 16:45:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:55,438 INFO L93 Difference]: Finished difference Result 24212 states and 28181 transitions. [2018-10-24 16:45:55,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:45:55,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 320 [2018-10-24 16:45:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:55,484 INFO L225 Difference]: With dead ends: 24212 [2018-10-24 16:45:55,484 INFO L226 Difference]: Without dead ends: 12533 [2018-10-24 16:45:55,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:45:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2018-10-24 16:45:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12533. [2018-10-24 16:45:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12533 states. [2018-10-24 16:45:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 14512 transitions. [2018-10-24 16:45:55,734 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 14512 transitions. Word has length 320 [2018-10-24 16:45:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:55,734 INFO L481 AbstractCegarLoop]: Abstraction has 12533 states and 14512 transitions. [2018-10-24 16:45:55,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:45:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 14512 transitions. [2018-10-24 16:45:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 16:45:55,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:55,747 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:55,747 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:55,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:55,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1352711679, now seen corresponding path program 1 times [2018-10-24 16:45:55,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:55,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:55,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:55,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:55,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:56,204 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-10-24 16:45:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:45:56,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:56,451 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:45:56,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:56,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:45:56,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:45:56,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-24 16:45:56,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:45:56,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:45:56,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:45:56,820 INFO L87 Difference]: Start difference. First operand 12533 states and 14512 transitions. Second operand 5 states. [2018-10-24 16:46:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:46:03,783 INFO L93 Difference]: Finished difference Result 34876 states and 41007 transitions. [2018-10-24 16:46:03,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:46:03,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2018-10-24 16:46:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:46:03,827 INFO L225 Difference]: With dead ends: 34876 [2018-10-24 16:46:03,827 INFO L226 Difference]: Without dead ends: 23197 [2018-10-24 16:46:03,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 394 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:46:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2018-10-24 16:46:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 23194. [2018-10-24 16:46:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23194 states. [2018-10-24 16:46:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23194 states to 23194 states and 26214 transitions. [2018-10-24 16:46:04,150 INFO L78 Accepts]: Start accepts. Automaton has 23194 states and 26214 transitions. Word has length 396 [2018-10-24 16:46:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:46:04,151 INFO L481 AbstractCegarLoop]: Abstraction has 23194 states and 26214 transitions. [2018-10-24 16:46:04,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:46:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23194 states and 26214 transitions. [2018-10-24 16:46:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-24 16:46:04,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:46:04,163 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:46:04,163 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:46:04,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:46:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash -804389548, now seen corresponding path program 1 times [2018-10-24 16:46:04,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:46:04,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:46:04,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:04,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:04,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 547 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:46:05,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:46:05,244 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:46:05,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:05,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:46:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:46:05,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:46:05,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-24 16:46:05,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:46:05,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:46:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:46:05,794 INFO L87 Difference]: Start difference. First operand 23194 states and 26214 transitions. Second operand 11 states. [2018-10-24 16:46:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:46:18,059 INFO L93 Difference]: Finished difference Result 51176 states and 58121 transitions. [2018-10-24 16:46:18,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:46:18,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 403 [2018-10-24 16:46:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:46:18,097 INFO L225 Difference]: With dead ends: 51176 [2018-10-24 16:46:18,097 INFO L226 Difference]: Without dead ends: 28836 [2018-10-24 16:46:18,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:46:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28836 states. [2018-10-24 16:46:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28836 to 26176. [2018-10-24 16:46:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26176 states. [2018-10-24 16:46:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26176 states to 26176 states and 29396 transitions. [2018-10-24 16:46:18,466 INFO L78 Accepts]: Start accepts. Automaton has 26176 states and 29396 transitions. Word has length 403 [2018-10-24 16:46:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:46:18,467 INFO L481 AbstractCegarLoop]: Abstraction has 26176 states and 29396 transitions. [2018-10-24 16:46:18,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:46:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 26176 states and 29396 transitions. [2018-10-24 16:46:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-24 16:46:18,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:46:18,491 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:46:18,492 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:46:18,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:46:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1549133499, now seen corresponding path program 1 times [2018-10-24 16:46:18,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:46:18,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:46:18,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:18,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:18,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-10-24 16:46:19,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:46:19,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:46:19,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:46:19,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:46:19,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:46:19,041 INFO L87 Difference]: Start difference. First operand 26176 states and 29396 transitions. Second operand 3 states. [2018-10-24 16:46:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:46:21,192 INFO L93 Difference]: Finished difference Result 51062 states and 57468 transitions. [2018-10-24 16:46:21,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:46:21,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-10-24 16:46:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:46:21,218 INFO L225 Difference]: With dead ends: 51062 [2018-10-24 16:46:21,218 INFO L226 Difference]: Without dead ends: 26164 [2018-10-24 16:46:21,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:46:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26164 states. [2018-10-24 16:46:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26164 to 26161. [2018-10-24 16:46:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26161 states. [2018-10-24 16:46:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26161 states to 26161 states and 29362 transitions. [2018-10-24 16:46:21,814 INFO L78 Accepts]: Start accepts. Automaton has 26161 states and 29362 transitions. Word has length 467 [2018-10-24 16:46:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:46:21,815 INFO L481 AbstractCegarLoop]: Abstraction has 26161 states and 29362 transitions. [2018-10-24 16:46:21,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:46:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 26161 states and 29362 transitions. [2018-10-24 16:46:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-10-24 16:46:21,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:46:21,831 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:46:21,831 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:46:21,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:46:21,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1666315192, now seen corresponding path program 1 times [2018-10-24 16:46:21,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:46:21,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:46:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:21,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:22,275 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 16:46:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 461 proven. 83 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-24 16:46:22,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:46:22,595 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:46:22,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:22,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:46:23,258 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 21 [2018-10-24 16:46:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-24 16:46:23,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:46:23,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:46:23,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:46:23,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:46:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:46:23,769 INFO L87 Difference]: Start difference. First operand 26161 states and 29362 transitions. Second operand 7 states. [2018-10-24 16:46:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:46:58,148 INFO L93 Difference]: Finished difference Result 62567 states and 70024 transitions. [2018-10-24 16:46:58,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:46:58,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2018-10-24 16:46:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:46:58,181 INFO L225 Difference]: With dead ends: 62567 [2018-10-24 16:46:58,182 INFO L226 Difference]: Without dead ends: 37686 [2018-10-24 16:46:58,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:46:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37686 states. [2018-10-24 16:46:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37686 to 37668. [2018-10-24 16:46:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37668 states. [2018-10-24 16:46:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37668 states to 37668 states and 41309 transitions. [2018-10-24 16:46:58,566 INFO L78 Accepts]: Start accepts. Automaton has 37668 states and 41309 transitions. Word has length 487 [2018-10-24 16:46:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:46:58,567 INFO L481 AbstractCegarLoop]: Abstraction has 37668 states and 41309 transitions. [2018-10-24 16:46:58,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:46:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 37668 states and 41309 transitions. [2018-10-24 16:46:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-10-24 16:46:58,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:46:58,590 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:46:58,590 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:46:58,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:46:58,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1751361206, now seen corresponding path program 1 times [2018-10-24 16:46:58,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:46:58,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:46:58,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:58,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:58,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-24 16:46:58,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:46:58,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:46:58,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:46:58,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:46:58,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:46:58,980 INFO L87 Difference]: Start difference. First operand 37668 states and 41309 transitions. Second operand 3 states. [2018-10-24 16:47:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:02,243 INFO L93 Difference]: Finished difference Result 80024 states and 87999 transitions. [2018-10-24 16:47:02,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:47:02,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-10-24 16:47:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:02,284 INFO L225 Difference]: With dead ends: 80024 [2018-10-24 16:47:02,284 INFO L226 Difference]: Without dead ends: 43636 [2018-10-24 16:47:02,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:47:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43636 states. [2018-10-24 16:47:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43636 to 42781. [2018-10-24 16:47:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42781 states. [2018-10-24 16:47:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42781 states to 42781 states and 46817 transitions. [2018-10-24 16:47:03,134 INFO L78 Accepts]: Start accepts. Automaton has 42781 states and 46817 transitions. Word has length 553 [2018-10-24 16:47:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:03,135 INFO L481 AbstractCegarLoop]: Abstraction has 42781 states and 46817 transitions. [2018-10-24 16:47:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:47:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 42781 states and 46817 transitions. [2018-10-24 16:47:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-24 16:47:03,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:03,147 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2018-10-24 16:47:03,148 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:03,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash -444843069, now seen corresponding path program 1 times [2018-10-24 16:47:03,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:03,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:03,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:03,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 645 proven. 248 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-24 16:47:04,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:47:04,108 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:47:04,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:04,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:47:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-24 16:47:04,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:47:04,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:47:04,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:47:04,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:47:04,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:47:04,511 INFO L87 Difference]: Start difference. First operand 42781 states and 46817 transitions. Second operand 6 states. [2018-10-24 16:47:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:16,240 INFO L93 Difference]: Finished difference Result 98780 states and 108410 transitions. [2018-10-24 16:47:16,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:47:16,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 565 [2018-10-24 16:47:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:16,296 INFO L225 Difference]: With dead ends: 98780 [2018-10-24 16:47:16,296 INFO L226 Difference]: Without dead ends: 57279 [2018-10-24 16:47:16,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:47:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57279 states. [2018-10-24 16:47:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57279 to 56830. [2018-10-24 16:47:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56830 states. [2018-10-24 16:47:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56830 states to 56830 states and 61648 transitions. [2018-10-24 16:47:16,802 INFO L78 Accepts]: Start accepts. Automaton has 56830 states and 61648 transitions. Word has length 565 [2018-10-24 16:47:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:16,803 INFO L481 AbstractCegarLoop]: Abstraction has 56830 states and 61648 transitions. [2018-10-24 16:47:16,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:47:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 56830 states and 61648 transitions. [2018-10-24 16:47:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-24 16:47:16,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:16,816 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:47:16,817 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:16,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash -188059246, now seen corresponding path program 1 times [2018-10-24 16:47:16,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:16,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:16,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:16,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:17,298 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-24 16:47:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-10-24 16:47:17,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:47:17,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:47:17,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:47:17,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:47:17,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:47:17,535 INFO L87 Difference]: Start difference. First operand 56830 states and 61648 transitions. Second operand 4 states. [2018-10-24 16:47:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:22,703 INFO L93 Difference]: Finished difference Result 116656 states and 126614 transitions. [2018-10-24 16:47:22,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:47:22,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-10-24 16:47:22,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:22,754 INFO L225 Difference]: With dead ends: 116656 [2018-10-24 16:47:22,754 INFO L226 Difference]: Without dead ends: 61106 [2018-10-24 16:47:22,779 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 [2018-10-24 16:47:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61106 states. [2018-10-24 16:47:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61106 to 58534. [2018-10-24 16:47:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58534 states. [2018-10-24 16:47:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58534 states to 58534 states and 63490 transitions. [2018-10-24 16:47:23,727 INFO L78 Accepts]: Start accepts. Automaton has 58534 states and 63490 transitions. Word has length 582 [2018-10-24 16:47:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:23,728 INFO L481 AbstractCegarLoop]: Abstraction has 58534 states and 63490 transitions. [2018-10-24 16:47:23,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:47:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 58534 states and 63490 transitions. [2018-10-24 16:47:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-10-24 16:47:23,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:23,740 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:47:23,741 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:23,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash -314002902, now seen corresponding path program 1 times [2018-10-24 16:47:23,741 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:23,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:23,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:23,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:23,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 382 proven. 55 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-24 16:47:24,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:47:24,467 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:47:24,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:24,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:47:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 493 proven. 109 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-24 16:47:25,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:47:25,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-24 16:47:25,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:47:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:47:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:47:25,795 INFO L87 Difference]: Start difference. First operand 58534 states and 63490 transitions. Second operand 9 states. [2018-10-24 16:47:26,019 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:47:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:42,767 INFO L93 Difference]: Finished difference Result 138890 states and 150325 transitions. [2018-10-24 16:47:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:47:42,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 594 [2018-10-24 16:47:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:42,864 INFO L225 Difference]: With dead ends: 138890 [2018-10-24 16:47:42,864 INFO L226 Difference]: Without dead ends: 80728 [2018-10-24 16:47:42,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:47:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80728 states. [2018-10-24 16:47:43,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80728 to 57677. [2018-10-24 16:47:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57677 states. [2018-10-24 16:47:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57677 states to 57677 states and 62737 transitions. [2018-10-24 16:47:43,699 INFO L78 Accepts]: Start accepts. Automaton has 57677 states and 62737 transitions. Word has length 594 [2018-10-24 16:47:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:43,700 INFO L481 AbstractCegarLoop]: Abstraction has 57677 states and 62737 transitions. [2018-10-24 16:47:43,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:47:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 57677 states and 62737 transitions. [2018-10-24 16:47:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-10-24 16:47:43,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:43,717 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:47:43,717 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:43,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 894047878, now seen corresponding path program 1 times [2018-10-24 16:47:43,718 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:43,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:43,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:43,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:43,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:44,306 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 16:47:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 565 proven. 55 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2018-10-24 16:47:45,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:47:45,184 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:47:45,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:45,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:47:46,921 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-10-24 16:47:54,508 WARN L179 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 76 DAG size of output: 33 [2018-10-24 16:47:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 760 proven. 108 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-24 16:47:55,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:47:55,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-24 16:47:55,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:47:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:47:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:47:55,165 INFO L87 Difference]: Start difference. First operand 57677 states and 62737 transitions. Second operand 9 states. [2018-10-24 16:48:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:48:28,845 INFO L93 Difference]: Finished difference Result 142321 states and 154871 transitions. [2018-10-24 16:48:28,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:48:28,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 596 [2018-10-24 16:48:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:48:28,933 INFO L225 Difference]: With dead ends: 142321 [2018-10-24 16:48:28,934 INFO L226 Difference]: Without dead ends: 84586 [2018-10-24 16:48:28,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:48:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84586 states. [2018-10-24 16:48:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84586 to 79446. [2018-10-24 16:48:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79446 states. [2018-10-24 16:48:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79446 states to 79446 states and 86324 transitions. [2018-10-24 16:48:30,499 INFO L78 Accepts]: Start accepts. Automaton has 79446 states and 86324 transitions. Word has length 596 [2018-10-24 16:48:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:48:30,500 INFO L481 AbstractCegarLoop]: Abstraction has 79446 states and 86324 transitions. [2018-10-24 16:48:30,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:48:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 79446 states and 86324 transitions. [2018-10-24 16:48:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-10-24 16:48:30,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:30,514 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2018-10-24 16:48:30,515 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:30,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1955363104, now seen corresponding path program 1 times [2018-10-24 16:48:30,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:30,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:30,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:30,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:30,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2018-10-24 16:48:31,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:48:31,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:48:31,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:48:31,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:48:31,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:48:31,044 INFO L87 Difference]: Start difference. First operand 79446 states and 86324 transitions. Second operand 5 states. [2018-10-24 16:48:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:48:38,205 INFO L93 Difference]: Finished difference Result 188356 states and 204608 transitions. [2018-10-24 16:48:38,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:48:38,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 599 [2018-10-24 16:48:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:48:38,324 INFO L225 Difference]: With dead ends: 188356 [2018-10-24 16:48:38,325 INFO L226 Difference]: Without dead ends: 110190 [2018-10-24 16:48:38,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:48:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110190 states. [2018-10-24 16:48:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110190 to 99504. [2018-10-24 16:48:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99504 states. [2018-10-24 16:48:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99504 states to 99504 states and 108172 transitions. [2018-10-24 16:48:40,210 INFO L78 Accepts]: Start accepts. Automaton has 99504 states and 108172 transitions. Word has length 599 [2018-10-24 16:48:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:48:40,211 INFO L481 AbstractCegarLoop]: Abstraction has 99504 states and 108172 transitions. [2018-10-24 16:48:40,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:48:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 99504 states and 108172 transitions. [2018-10-24 16:48:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-24 16:48:40,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:40,221 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:48:40,221 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:40,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:40,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1361608265, now seen corresponding path program 1 times [2018-10-24 16:48:40,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:40,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:40,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:40,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:40,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:40,970 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 Received shutdown request... [2018-10-24 16:48:41,735 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:48:41,740 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:48:41,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:48:41 BoogieIcfgContainer [2018-10-24 16:48:41,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:48:41,742 INFO L168 Benchmark]: Toolchain (without parser) took 238453.85 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 1.9 GB in the end (delta: -474.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,744 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:48:41,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1564.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 524.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,746 INFO L168 Benchmark]: Boogie Preprocessor took 319.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,749 INFO L168 Benchmark]: RCFGBuilder took 9040.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,750 INFO L168 Benchmark]: TraceAbstraction took 226999.36 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -193.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:48:41,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1564.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 524.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 319.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9040.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226999.36 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -193.6 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: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was analyzing trace of length 620 with TraceHistMax 7,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 618 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 226.9s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 189.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4108 SDtfs, 36061 SDslu, 3502 SDs, 0 SdLazy, 80763 SolverSat, 12432 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 163.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3604 GetRequests, 3483 SyntacticMatches, 30 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99504occurred in iteration=14, 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: 8.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 45467 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 9466 NumberOfCodeBlocks, 9466 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 9444 ConstructedInterpolants, 380 QuantifiedInterpolants, 18229628 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4530 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 13378/14532 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown