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/Problem12_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:00:52,126 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:00:52,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:00:52,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:00:52,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:00:52,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:00:52,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:00:52,145 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:00:52,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:00:52,147 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:00:52,148 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:00:52,148 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:00:52,149 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:00:52,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:00:52,151 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:00:52,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:00:52,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:00:52,155 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:00:52,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:00:52,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:00:52,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:00:52,160 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:00:52,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:00:52,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:00:52,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:00:52,164 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:00:52,165 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:00:52,166 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:00:52,167 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:00:52,168 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:00:52,168 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:00:52,169 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:00:52,169 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:00:52,169 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:00:52,170 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:00:52,171 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:00:52,171 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:00:52,189 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:00:52,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:00:52,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:00:52,190 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:00:52,190 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:00:52,190 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:00:52,191 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:00:52,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:00:52,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:00:52,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:00:52,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:00:52,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:00:52,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:00:52,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:00:52,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:00:52,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:00:52,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:00:52,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:00:52,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:00:52,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:00:52,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:00:52,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:00:52,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:00:52,194 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:00:52,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:00:52,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:00:52,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:00:52,195 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:00:52,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:00:52,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:00:52,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:00:52,272 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:00:52,273 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:00:52,273 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-10-24 14:00:52,331 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dd2efb903/27a95337ca53448584fdb09a4e8fb602/FLAGd247ca1f7 [2018-10-24 14:00:53,033 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:00:53,034 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-10-24 14:00:53,065 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dd2efb903/27a95337ca53448584fdb09a4e8fb602/FLAGd247ca1f7 [2018-10-24 14:00:53,081 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dd2efb903/27a95337ca53448584fdb09a4e8fb602 [2018-10-24 14:00:53,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:00:53,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:00:53,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:00:53,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:00:53,103 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:00:53,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:00:53" (1/1) ... [2018-10-24 14:00:53,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:53, skipping insertion in model container [2018-10-24 14:00:53,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:00:53" (1/1) ... [2018-10-24 14:00:53,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:00:53,270 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:00:54,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:00:54,494 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:00:55,161 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:00:55,201 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:00:55,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55 WrapperNode [2018-10-24 14:00:55,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:00:55,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:00:55,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:00:55,203 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:00:55,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:55,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:55,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:00:55,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:00:55,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:00:55,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:00:55,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:55,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:55,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:55,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:56,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:56,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:56,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... [2018-10-24 14:00:56,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:00:56,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:00:56,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:00:56,201 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:00:56,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:00:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:00:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:00:56,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:01:04,695 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:01:04,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:01:04 BoogieIcfgContainer [2018-10-24 14:01:04,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:01:04,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:01:04,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:01:04,702 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:01:04,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:00:53" (1/3) ... [2018-10-24 14:01:04,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:01:04, skipping insertion in model container [2018-10-24 14:01:04,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:55" (2/3) ... [2018-10-24 14:01:04,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:01:04, skipping insertion in model container [2018-10-24 14:01:04,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:01:04" (3/3) ... [2018-10-24 14:01:04,709 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08_false-unreach-call.c [2018-10-24 14:01:04,719 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:01:04,729 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:01:04,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:01:04,789 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:01:04,789 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:01:04,789 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:01:04,790 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:01:04,790 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:01:04,790 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:01:04,790 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:01:04,790 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:01:04,790 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:01:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:01:04,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 14:01:04,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:04,835 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] [2018-10-24 14:01:04,837 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:04,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-10-24 14:01:04,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:04,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:04,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:04,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:04,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:05,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:05,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:01:05,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:01:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:01:05,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:01:05,279 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:01:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:19,126 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:01:19,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:01:19,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-24 14:01:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:19,168 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:01:19,168 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:01:19,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:01:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:01:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:01:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:01:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-24 14:01:19,332 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 30 [2018-10-24 14:01:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:19,332 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-24 14:01:19,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:01:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-24 14:01:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 14:01:19,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:19,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:01:19,341 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:19,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1843346744, now seen corresponding path program 1 times [2018-10-24 14:01:19,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:19,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:19,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:19,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:19,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:20,013 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 14:01:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:20,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:20,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:01:20,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:01:20,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:01:20,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:01:20,065 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-24 14:01:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:38,582 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-24 14:01:38,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:01:38,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2018-10-24 14:01:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:38,619 INFO L225 Difference]: With dead ends: 9904 [2018-10-24 14:01:38,619 INFO L226 Difference]: Without dead ends: 7586 [2018-10-24 14:01:38,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:01:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-24 14:01:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-24 14:01:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-24 14:01:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-24 14:01:38,752 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 96 [2018-10-24 14:01:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:38,752 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-24 14:01:38,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:01:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-24 14:01:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 14:01:38,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:38,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:01:38,756 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:38,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash -995895591, now seen corresponding path program 1 times [2018-10-24 14:01:38,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:38,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:38,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:38,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:38,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-24 14:01:38,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:01:38,942 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:01:38,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:39,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:01:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:39,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:01:39,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:01:39,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:01:39,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:01:39,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:01:39,177 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 5 states. [2018-10-24 14:01:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:54,226 INFO L93 Difference]: Finished difference Result 27214 states and 43707 transitions. [2018-10-24 14:01:54,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:01:54,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-24 14:01:54,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:54,319 INFO L225 Difference]: With dead ends: 27214 [2018-10-24 14:01:54,319 INFO L226 Difference]: Without dead ends: 21136 [2018-10-24 14:01:54,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 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 14:01:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2018-10-24 14:01:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 15104. [2018-10-24 14:01:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-10-24 14:01:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 22198 transitions. [2018-10-24 14:01:54,684 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 22198 transitions. Word has length 102 [2018-10-24 14:01:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:54,685 INFO L481 AbstractCegarLoop]: Abstraction has 15104 states and 22198 transitions. [2018-10-24 14:01:54,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:01:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 22198 transitions. [2018-10-24 14:01:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 14:01:54,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:54,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:01:54,691 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:54,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1710188800, now seen corresponding path program 1 times [2018-10-24 14:01:54,692 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:54,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:54,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:54,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:54,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:55,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:01:55,177 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:01:55,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:55,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:01:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:01:55,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:01:55,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-24 14:01:55,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:01:55,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:01:55,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:01:55,389 INFO L87 Difference]: Start difference. First operand 15104 states and 22198 transitions. Second operand 7 states. [2018-10-24 14:02:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:09,375 INFO L93 Difference]: Finished difference Result 59535 states and 86819 transitions. [2018-10-24 14:02:09,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:02:09,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-10-24 14:02:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:09,456 INFO L225 Difference]: With dead ends: 59535 [2018-10-24 14:02:09,456 INFO L226 Difference]: Without dead ends: 44433 [2018-10-24 14:02:09,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:02:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44433 states. [2018-10-24 14:02:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44433 to 42928. [2018-10-24 14:02:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42928 states. [2018-10-24 14:02:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42928 states to 42928 states and 56765 transitions. [2018-10-24 14:02:10,103 INFO L78 Accepts]: Start accepts. Automaton has 42928 states and 56765 transitions. Word has length 176 [2018-10-24 14:02:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:10,103 INFO L481 AbstractCegarLoop]: Abstraction has 42928 states and 56765 transitions. [2018-10-24 14:02:10,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:02:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 42928 states and 56765 transitions. [2018-10-24 14:02:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 14:02:10,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:10,117 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:02:10,118 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:10,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1630931784, now seen corresponding path program 1 times [2018-10-24 14:02:10,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:10,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:10,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:10,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:10,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 14:02:10,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:02:10,518 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 14:02:10,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:10,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:02:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 14:02:10,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:02:10,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:02:10,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:02:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:02:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:02:10,862 INFO L87 Difference]: Start difference. First operand 42928 states and 56765 transitions. Second operand 5 states. [2018-10-24 14:02:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:24,821 INFO L93 Difference]: Finished difference Result 123454 states and 163040 transitions. [2018-10-24 14:02:24,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:02:24,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2018-10-24 14:02:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:24,926 INFO L225 Difference]: With dead ends: 123454 [2018-10-24 14:02:24,927 INFO L226 Difference]: Without dead ends: 80528 [2018-10-24 14:02:24,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:02:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80528 states. [2018-10-24 14:02:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80528 to 79776. [2018-10-24 14:02:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79776 states. [2018-10-24 14:02:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79776 states to 79776 states and 95811 transitions. [2018-10-24 14:02:25,913 INFO L78 Accepts]: Start accepts. Automaton has 79776 states and 95811 transitions. Word has length 270 [2018-10-24 14:02:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:25,914 INFO L481 AbstractCegarLoop]: Abstraction has 79776 states and 95811 transitions. [2018-10-24 14:02:25,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:02:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 79776 states and 95811 transitions. [2018-10-24 14:02:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-24 14:02:25,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:25,948 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:02:25,948 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:25,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1107446318, now seen corresponding path program 1 times [2018-10-24 14:02:25,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:25,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:25,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:25,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:25,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 227 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:02:26,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:02:26,413 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 14:02:26,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:26,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:02:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 14:02:26,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:02:26,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:02:26,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:02:26,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:02:26,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:02:26,699 INFO L87 Difference]: Start difference. First operand 79776 states and 95811 transitions. Second operand 7 states. [2018-10-24 14:02:27,403 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 14:02:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:45,516 INFO L93 Difference]: Finished difference Result 241540 states and 284793 transitions. [2018-10-24 14:02:45,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:02:45,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2018-10-24 14:02:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:45,702 INFO L225 Difference]: With dead ends: 241540 [2018-10-24 14:02:45,703 INFO L226 Difference]: Without dead ends: 159507 [2018-10-24 14:02:45,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:02:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159507 states. [2018-10-24 14:02:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159507 to 127151. [2018-10-24 14:02:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127151 states. [2018-10-24 14:02:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127151 states to 127151 states and 140626 transitions. [2018-10-24 14:02:46,997 INFO L78 Accepts]: Start accepts. Automaton has 127151 states and 140626 transitions. Word has length 376 [2018-10-24 14:02:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:46,997 INFO L481 AbstractCegarLoop]: Abstraction has 127151 states and 140626 transitions. [2018-10-24 14:02:46,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:02:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 127151 states and 140626 transitions. [2018-10-24 14:02:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-24 14:02:47,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:47,013 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:02:47,013 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:47,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:47,014 INFO L82 PathProgramCache]: Analyzing trace with hash 640689002, now seen corresponding path program 1 times [2018-10-24 14:02:47,014 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:47,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:47,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:47,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:47,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:02:47,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:02:47,476 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 14:02:47,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:47,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:02:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:02:47,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:02:47,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-24 14:02:47,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:02:47,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:02:47,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:02:47,869 INFO L87 Difference]: Start difference. First operand 127151 states and 140626 transitions. Second operand 6 states. [2018-10-24 14:03:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:11,086 INFO L93 Difference]: Finished difference Result 290411 states and 319745 transitions. [2018-10-24 14:03:11,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:03:11,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 392 [2018-10-24 14:03:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:11,264 INFO L225 Difference]: With dead ends: 290411 [2018-10-24 14:03:11,265 INFO L226 Difference]: Without dead ends: 163262 [2018-10-24 14:03:11,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:03:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163262 states. [2018-10-24 14:03:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163262 to 130159. [2018-10-24 14:03:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130159 states. [2018-10-24 14:03:12,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130159 states to 130159 states and 142542 transitions. [2018-10-24 14:03:12,605 INFO L78 Accepts]: Start accepts. Automaton has 130159 states and 142542 transitions. Word has length 392 [2018-10-24 14:03:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:12,605 INFO L481 AbstractCegarLoop]: Abstraction has 130159 states and 142542 transitions. [2018-10-24 14:03:12,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:03:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 130159 states and 142542 transitions. [2018-10-24 14:03:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-10-24 14:03:12,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:12,633 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:03:12,633 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:12,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:12,634 INFO L82 PathProgramCache]: Analyzing trace with hash -321722547, now seen corresponding path program 1 times [2018-10-24 14:03:12,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:12,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:12,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:12,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:12,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-24 14:03:13,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:13,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:03:13,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:03:13,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:03:13,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:03:13,016 INFO L87 Difference]: Start difference. First operand 130159 states and 142542 transitions. Second operand 3 states. [2018-10-24 14:03:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:18,458 INFO L93 Difference]: Finished difference Result 277612 states and 304664 transitions. [2018-10-24 14:03:18,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:03:18,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 456 [2018-10-24 14:03:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:18,620 INFO L225 Difference]: With dead ends: 277612 [2018-10-24 14:03:18,620 INFO L226 Difference]: Without dead ends: 147455 [2018-10-24 14:03:18,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:03:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147455 states. [2018-10-24 14:03:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147455 to 147455. [2018-10-24 14:03:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147455 states. [2018-10-24 14:03:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147455 states to 147455 states and 159421 transitions. [2018-10-24 14:03:19,774 INFO L78 Accepts]: Start accepts. Automaton has 147455 states and 159421 transitions. Word has length 456 [2018-10-24 14:03:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:19,774 INFO L481 AbstractCegarLoop]: Abstraction has 147455 states and 159421 transitions. [2018-10-24 14:03:19,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:03:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 147455 states and 159421 transitions. [2018-10-24 14:03:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-24 14:03:19,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:19,795 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:03:19,795 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:19,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:19,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1900862473, now seen corresponding path program 1 times [2018-10-24 14:03:19,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:19,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:19,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:19,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:19,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-10-24 14:03:20,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:20,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:03:20,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:03:20,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:03:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:03:20,508 INFO L87 Difference]: Start difference. First operand 147455 states and 159421 transitions. Second operand 5 states. [2018-10-24 14:03:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:32,926 INFO L93 Difference]: Finished difference Result 422045 states and 456666 transitions. [2018-10-24 14:03:32,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:03:32,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-24 14:03:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:33,286 INFO L225 Difference]: With dead ends: 422045 [2018-10-24 14:03:33,286 INFO L226 Difference]: Without dead ends: 274592 [2018-10-24 14:03:33,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:03:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274592 states. [2018-10-24 14:03:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274592 to 223454. [2018-10-24 14:03:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223454 states. [2018-10-24 14:03:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223454 states to 223454 states and 238973 transitions. [2018-10-24 14:03:36,746 INFO L78 Accepts]: Start accepts. Automaton has 223454 states and 238973 transitions. Word has length 467 [2018-10-24 14:03:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:36,747 INFO L481 AbstractCegarLoop]: Abstraction has 223454 states and 238973 transitions. [2018-10-24 14:03:36,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:03:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 223454 states and 238973 transitions. [2018-10-24 14:03:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-24 14:03:36,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:36,761 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:03:36,761 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:36,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:36,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1940674813, now seen corresponding path program 1 times [2018-10-24 14:03:36,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:36,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:36,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:36,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:36,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:03:37,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:03:37,329 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 14:03:37,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:37,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:03:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Forcibly destroying the process [2018-10-24 14:03:39,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:03:39,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-24 14:03:39,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:03:39,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:03:39,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:03:39,448 INFO L87 Difference]: Start difference. First operand 223454 states and 238973 transitions. Second operand 6 states. [2018-10-24 14:04:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:02,687 INFO L93 Difference]: Finished difference Result 489783 states and 525278 transitions. [2018-10-24 14:04:02,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:04:02,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 488 [2018-10-24 14:04:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:03,017 INFO L225 Difference]: With dead ends: 489783 [2018-10-24 14:04:03,017 INFO L226 Difference]: Without dead ends: 266331 [2018-10-24 14:04:03,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:04:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266331 states. [2018-10-24 14:04:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266331 to 232478. [2018-10-24 14:04:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232478 states. [2018-10-24 14:04:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232478 states to 232478 states and 245233 transitions. [2018-10-24 14:04:11,290 INFO L78 Accepts]: Start accepts. Automaton has 232478 states and 245233 transitions. Word has length 488 [2018-10-24 14:04:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:11,291 INFO L481 AbstractCegarLoop]: Abstraction has 232478 states and 245233 transitions. [2018-10-24 14:04:11,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:04:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 232478 states and 245233 transitions. [2018-10-24 14:04:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-24 14:04:11,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:11,301 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:11,301 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:11,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -198234994, now seen corresponding path program 1 times [2018-10-24 14:04:11,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:11,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:11,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:11,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:11,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 14:04:12,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:12,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:04:12,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:12,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:12,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:12,447 INFO L87 Difference]: Start difference. First operand 232478 states and 245233 transitions. Second operand 4 states. [2018-10-24 14:04:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:23,195 INFO L93 Difference]: Finished difference Result 454409 states and 479748 transitions. [2018-10-24 14:04:23,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:23,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-10-24 14:04:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:23,524 INFO L225 Difference]: With dead ends: 454409 [2018-10-24 14:04:23,525 INFO L226 Difference]: Without dead ends: 187285 [2018-10-24 14:04:23,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187285 states. [2018-10-24 14:04:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187285 to 181269. [2018-10-24 14:04:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181269 states. [2018-10-24 14:04:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181269 states to 181269 states and 190102 transitions. [2018-10-24 14:04:26,278 INFO L78 Accepts]: Start accepts. Automaton has 181269 states and 190102 transitions. Word has length 494 [2018-10-24 14:04:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:26,279 INFO L481 AbstractCegarLoop]: Abstraction has 181269 states and 190102 transitions. [2018-10-24 14:04:26,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 181269 states and 190102 transitions. [2018-10-24 14:04:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-24 14:04:26,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:26,287 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:04:26,288 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:26,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:26,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1920332186, now seen corresponding path program 1 times [2018-10-24 14:04:26,288 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:26,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:26,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:26,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:26,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:26,915 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:04:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 14:04:27,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:27,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:04:27,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:27,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:27,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:27,095 INFO L87 Difference]: Start difference. First operand 181269 states and 190102 transitions. Second operand 4 states. [2018-10-24 14:04:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:37,170 INFO L93 Difference]: Finished difference Result 360272 states and 377919 transitions. [2018-10-24 14:04:37,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:04:37,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 510 [2018-10-24 14:04:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:37,381 INFO L225 Difference]: With dead ends: 360272 [2018-10-24 14:04:37,381 INFO L226 Difference]: Without dead ends: 179005 [2018-10-24 14:04:37,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179005 states. Received shutdown request... [2018-10-24 14:04:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179005 to 172989. [2018-10-24 14:04:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172989 states. [2018-10-24 14:04:39,655 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:04:39,661 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:04:39,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:04:39 BoogieIcfgContainer [2018-10-24 14:04:39,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:04:39,662 INFO L168 Benchmark]: Toolchain (without parser) took 226569.13 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,663 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:04:39,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2104.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 641.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,665 INFO L168 Benchmark]: Boogie Preprocessor took 356.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,666 INFO L168 Benchmark]: RCFGBuilder took 8496.54 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -185.6 MB). Peak memory consumption was 626.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,667 INFO L168 Benchmark]: TraceAbstraction took 214963.83 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -294.8 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-24 14:04:39,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2104.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 641.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 356.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8496.54 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -185.6 MB). Peak memory consumption was 626.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214963.83 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -294.8 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 182.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7025 SDtfs, 39001 SDslu, 1676 SDs, 0 SdLazy, 88360 SolverSat, 17346 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 142.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1879 GetRequests, 1815 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232478occurred in iteration=10, 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: 22.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 166261 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 5661 NumberOfCodeBlocks, 5661 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5643 ConstructedInterpolants, 0 QuantifiedInterpolants, 4795750 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2404 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 5486/5702 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown