java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:16:02,025 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:16:02,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:16:02,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:16:02,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:16:02,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:16:02,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:16:02,044 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:16:02,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:16:02,046 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:16:02,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:16:02,048 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:16:02,049 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:16:02,050 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:16:02,051 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:16:02,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:16:02,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:16:02,055 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:16:02,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:16:02,058 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:16:02,063 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:16:02,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:16:02,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:16:02,069 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:16:02,069 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:16:02,072 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:16:02,074 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:16:02,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:16:02,075 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:16:02,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:16:02,081 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:16:02,084 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:16:02,086 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:16:02,114 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:16:02,114 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:16:02,116 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:16:02,119 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:16:02,120 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:16:02,120 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:16:02,120 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:16:02,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:16:02,121 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:16:02,122 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:16:02,122 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:16:02,122 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:16:02,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:16:02,122 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:16:02,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:16:02,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:16:02,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:16:02,123 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:16:02,123 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:16:02,124 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:16:02,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:16:02,124 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:16:02,124 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:16:02,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:16:02,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:16:02,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:16:02,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:16:02,200 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:16:02,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-23 20:16:02,266 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9131baa1b/c28e385e523c4eb283fb322cfbd8d8e6/FLAGbd4715de7 [2018-10-23 20:16:03,088 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:16:03,089 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-23 20:16:03,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9131baa1b/c28e385e523c4eb283fb322cfbd8d8e6/FLAGbd4715de7 [2018-10-23 20:16:03,149 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9131baa1b/c28e385e523c4eb283fb322cfbd8d8e6 [2018-10-23 20:16:03,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:16:03,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:16:03,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:03,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:16:03,170 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:16:03,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:03" (1/1) ... [2018-10-23 20:16:03,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:03, skipping insertion in model container [2018-10-23 20:16:03,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:03" (1/1) ... [2018-10-23 20:16:03,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:16:03,371 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:16:04,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:04,890 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:16:05,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:05,692 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:16:05,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05 WrapperNode [2018-10-23 20:16:05,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:05,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:05,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:16:05,694 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:16:05,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:05,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:06,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:16:06,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:16:06,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:16:06,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... [2018-10-23 20:16:06,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:16:06,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:16:06,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:16:06,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:16:06,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:16:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:16:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:16:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:16:21,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:16:21,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:21 BoogieIcfgContainer [2018-10-23 20:16:21,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:16:21,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:16:21,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:16:21,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:16:21,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:16:03" (1/3) ... [2018-10-23 20:16:21,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18850ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:21, skipping insertion in model container [2018-10-23 20:16:21,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:05" (2/3) ... [2018-10-23 20:16:21,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18850ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:21, skipping insertion in model container [2018-10-23 20:16:21,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:21" (3/3) ... [2018-10-23 20:16:21,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-10-23 20:16:21,640 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:16:21,651 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:16:21,668 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:16:21,713 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:16:21,714 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:16:21,714 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:16:21,714 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:16:21,715 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:16:21,715 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:16:21,715 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:16:21,715 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:16:21,715 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:16:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:16:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-23 20:16:21,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:21,765 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, 1] [2018-10-23 20:16:21,768 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:21,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times [2018-10-23 20:16:21,777 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:21,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:21,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:21,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:21,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:22,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:22,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:22,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:22,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:22,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:22,346 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:16:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:36,637 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-23 20:16:36,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:36,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-23 20:16:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:36,685 INFO L225 Difference]: With dead ends: 3896 [2018-10-23 20:16:36,685 INFO L226 Difference]: Without dead ends: 2790 [2018-10-23 20:16:36,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-23 20:16:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-23 20:16:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-23 20:16:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-23 20:16:36,862 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 58 [2018-10-23 20:16:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:36,862 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-23 20:16:36,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-23 20:16:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-23 20:16:36,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:36,875 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:36,875 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:36,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:36,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1393057410, now seen corresponding path program 1 times [2018-10-23 20:16:36,877 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:36,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:36,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:36,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:36,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:37,972 WARN L179 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:16:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:38,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:38,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:16:38,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:38,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:38,233 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-23 20:16:38,469 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:16:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:55,489 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-23 20:16:55,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:16:55,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-23 20:16:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:55,521 INFO L225 Difference]: With dead ends: 7061 [2018-10-23 20:16:55,521 INFO L226 Difference]: Without dead ends: 5118 [2018-10-23 20:16:55,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:16:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-23 20:16:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-23 20:16:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-23 20:16:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-23 20:16:55,632 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 124 [2018-10-23 20:16:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:55,632 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-23 20:16:55,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:16:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-23 20:16:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-23 20:16:55,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:55,639 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, 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] [2018-10-23 20:16:55,639 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:55,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:55,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1220810363, now seen corresponding path program 1 times [2018-10-23 20:16:55,640 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:55,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:55,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:55,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:55,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-23 20:16:56,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:16:56,137 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:16:56,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:56,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:16:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:16:56,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:16:56,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:16:56,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:56,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:56,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:56,465 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-23 20:17:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:11,983 INFO L93 Difference]: Finished difference Result 15791 states and 24940 transitions. [2018-10-23 20:17:11,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:11,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-23 20:17:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:12,037 INFO L225 Difference]: With dead ends: 15791 [2018-10-23 20:17:12,037 INFO L226 Difference]: Without dead ends: 11464 [2018-10-23 20:17:12,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2018-10-23 20:17:12,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11436. [2018-10-23 20:17:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-23 20:17:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15966 transitions. [2018-10-23 20:17:12,258 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15966 transitions. Word has length 184 [2018-10-23 20:17:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:12,258 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15966 transitions. [2018-10-23 20:17:12,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:17:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15966 transitions. [2018-10-23 20:17:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-23 20:17:12,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:12,266 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:12,266 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:12,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash 705131765, now seen corresponding path program 1 times [2018-10-23 20:17:12,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:12,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:12,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:12,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:12,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:17:12,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:12,644 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:17:12,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:12,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:17:12,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:12,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:17:12,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:12,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:12,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:12,830 INFO L87 Difference]: Start difference. First operand 11436 states and 15966 transitions. Second operand 4 states. [2018-10-23 20:17:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:23,099 INFO L93 Difference]: Finished difference Result 37884 states and 53982 transitions. [2018-10-23 20:17:23,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:23,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-10-23 20:17:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:23,196 INFO L225 Difference]: With dead ends: 37884 [2018-10-23 20:17:23,196 INFO L226 Difference]: Without dead ends: 27238 [2018-10-23 20:17:23,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2018-10-23 20:17:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 20891. [2018-10-23 20:17:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20891 states. [2018-10-23 20:17:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20891 states to 20891 states and 27229 transitions. [2018-10-23 20:17:23,555 INFO L78 Accepts]: Start accepts. Automaton has 20891 states and 27229 transitions. Word has length 264 [2018-10-23 20:17:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:23,556 INFO L481 AbstractCegarLoop]: Abstraction has 20891 states and 27229 transitions. [2018-10-23 20:17:23,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 20891 states and 27229 transitions. [2018-10-23 20:17:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-23 20:17:23,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:23,564 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:23,565 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:23,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2033026039, now seen corresponding path program 1 times [2018-10-23 20:17:23,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:23,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:23,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:23,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:23,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 20:17:23,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:23,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:17:23,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:17:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:17:23,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:23,891 INFO L87 Difference]: Start difference. First operand 20891 states and 27229 transitions. Second operand 3 states. [2018-10-23 20:17:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:31,743 INFO L93 Difference]: Finished difference Result 59901 states and 78777 transitions. [2018-10-23 20:17:31,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:17:31,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 290 [2018-10-23 20:17:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:31,807 INFO L225 Difference]: With dead ends: 59901 [2018-10-23 20:17:31,808 INFO L226 Difference]: Without dead ends: 39800 [2018-10-23 20:17:31,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39800 states. [2018-10-23 20:17:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39800 to 39799. [2018-10-23 20:17:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39799 states. [2018-10-23 20:17:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 48745 transitions. [2018-10-23 20:17:32,330 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 48745 transitions. Word has length 290 [2018-10-23 20:17:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:32,330 INFO L481 AbstractCegarLoop]: Abstraction has 39799 states and 48745 transitions. [2018-10-23 20:17:32,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:17:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 48745 transitions. [2018-10-23 20:17:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-23 20:17:32,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:32,351 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:32,351 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:32,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:32,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1706732680, now seen corresponding path program 1 times [2018-10-23 20:17:32,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:32,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:32,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:32,883 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:17:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 320 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-10-23 20:17:33,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:33,006 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 [2018-10-23 20:17:33,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:33,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-23 20:17:33,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:33,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:17:33,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:33,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:33,332 INFO L87 Difference]: Start difference. First operand 39799 states and 48745 transitions. Second operand 4 states. [2018-10-23 20:17:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:41,854 INFO L93 Difference]: Finished difference Result 96185 states and 115633 transitions. [2018-10-23 20:17:41,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:41,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2018-10-23 20:17:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:41,958 INFO L225 Difference]: With dead ends: 96185 [2018-10-23 20:17:41,958 INFO L226 Difference]: Without dead ends: 57176 [2018-10-23 20:17:41,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57176 states. [2018-10-23 20:17:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57176 to 48469. [2018-10-23 20:17:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-23 20:17:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58131 transitions. [2018-10-23 20:17:42,585 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58131 transitions. Word has length 387 [2018-10-23 20:17:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:42,586 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58131 transitions. [2018-10-23 20:17:42,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58131 transitions. [2018-10-23 20:17:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-23 20:17:42,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:42,607 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:42,607 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:42,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash 848401784, now seen corresponding path program 1 times [2018-10-23 20:17:42,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:42,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:42,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:42,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:42,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-23 20:17:43,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:43,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:43,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:43,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:43,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:43,120 INFO L87 Difference]: Start difference. First operand 48469 states and 58131 transitions. Second operand 4 states. [2018-10-23 20:17:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:54,460 INFO L93 Difference]: Finished difference Result 126123 states and 153351 transitions. [2018-10-23 20:17:54,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:54,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2018-10-23 20:17:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:54,563 INFO L225 Difference]: With dead ends: 126123 [2018-10-23 20:17:54,563 INFO L226 Difference]: Without dead ends: 78444 [2018-10-23 20:17:54,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78444 states. [2018-10-23 20:17:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78444 to 76050. [2018-10-23 20:17:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76050 states. [2018-10-23 20:17:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76050 states to 76050 states and 89208 transitions. [2018-10-23 20:17:55,424 INFO L78 Accepts]: Start accepts. Automaton has 76050 states and 89208 transitions. Word has length 393 [2018-10-23 20:17:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:55,425 INFO L481 AbstractCegarLoop]: Abstraction has 76050 states and 89208 transitions. [2018-10-23 20:17:55,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 76050 states and 89208 transitions. [2018-10-23 20:17:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-23 20:17:55,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:55,446 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:55,446 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:55,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:55,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1983809873, now seen corresponding path program 1 times [2018-10-23 20:17:55,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:55,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:55,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:55,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-23 20:17:55,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:55,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:17:55,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:55,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:55,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:55,862 INFO L87 Difference]: Start difference. First operand 76050 states and 89208 transitions. Second operand 4 states. [2018-10-23 20:18:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:05,004 INFO L93 Difference]: Finished difference Result 162340 states and 189790 transitions. [2018-10-23 20:18:05,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:05,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 416 [2018-10-23 20:18:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:05,122 INFO L225 Difference]: With dead ends: 162340 [2018-10-23 20:18:05,122 INFO L226 Difference]: Without dead ends: 75202 [2018-10-23 20:18:05,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75202 states. [2018-10-23 20:18:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75202 to 65745. [2018-10-23 20:18:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65745 states. [2018-10-23 20:18:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65745 states to 65745 states and 75711 transitions. [2018-10-23 20:18:05,925 INFO L78 Accepts]: Start accepts. Automaton has 65745 states and 75711 transitions. Word has length 416 [2018-10-23 20:18:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:05,925 INFO L481 AbstractCegarLoop]: Abstraction has 65745 states and 75711 transitions. [2018-10-23 20:18:05,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 65745 states and 75711 transitions. [2018-10-23 20:18:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-10-23 20:18:05,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:05,935 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:05,936 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:05,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1416563492, now seen corresponding path program 1 times [2018-10-23 20:18:05,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:05,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:05,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-10-23 20:18:06,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:06,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:06,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:18:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:18:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:06,474 INFO L87 Difference]: Start difference. First operand 65745 states and 75711 transitions. Second operand 5 states. [2018-10-23 20:18:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:26,298 INFO L93 Difference]: Finished difference Result 246810 states and 284823 transitions. [2018-10-23 20:18:26,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:18:26,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 453 [2018-10-23 20:18:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:26,547 INFO L225 Difference]: With dead ends: 246810 [2018-10-23 20:18:26,547 INFO L226 Difference]: Without dead ends: 180274 [2018-10-23 20:18:26,607 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 [2018-10-23 20:18:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180274 states. [2018-10-23 20:18:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180274 to 171427. [2018-10-23 20:18:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171427 states. [2018-10-23 20:18:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171427 states to 171427 states and 193543 transitions. [2018-10-23 20:18:29,005 INFO L78 Accepts]: Start accepts. Automaton has 171427 states and 193543 transitions. Word has length 453 [2018-10-23 20:18:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:29,006 INFO L481 AbstractCegarLoop]: Abstraction has 171427 states and 193543 transitions. [2018-10-23 20:18:29,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:18:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 171427 states and 193543 transitions. [2018-10-23 20:18:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-10-23 20:18:29,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:29,020 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:18:29,020 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:29,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:29,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1873190131, now seen corresponding path program 1 times [2018-10-23 20:18:29,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:29,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:29,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:29,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:29,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 462 proven. 56 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:18:29,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:18:29,530 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 [2018-10-23 20:18:29,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:29,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:18:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-10-23 20:18:29,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:18:29,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:18:29,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:18:29,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:18:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:29,922 INFO L87 Difference]: Start difference. First operand 171427 states and 193543 transitions. Second operand 5 states. [2018-10-23 20:18:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:40,128 INFO L93 Difference]: Finished difference Result 345988 states and 391588 transitions. [2018-10-23 20:18:40,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:40,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 486 [2018-10-23 20:18:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:40,353 INFO L225 Difference]: With dead ends: 345988 [2018-10-23 20:18:40,353 INFO L226 Difference]: Without dead ends: 175351 [2018-10-23 20:18:40,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 487 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175351 states. [2018-10-23 20:18:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175351 to 173774. [2018-10-23 20:18:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173774 states. [2018-10-23 20:18:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173774 states to 173774 states and 188774 transitions. [2018-10-23 20:18:42,069 INFO L78 Accepts]: Start accepts. Automaton has 173774 states and 188774 transitions. Word has length 486 [2018-10-23 20:18:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:42,070 INFO L481 AbstractCegarLoop]: Abstraction has 173774 states and 188774 transitions. [2018-10-23 20:18:42,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:18:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 173774 states and 188774 transitions. [2018-10-23 20:18:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-23 20:18:42,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:42,085 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:42,086 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:42,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash 325343511, now seen corresponding path program 1 times [2018-10-23 20:18:42,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:42,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:42,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 20:18:42,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:42,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:18:42,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:18:42,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:18:42,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:18:42,587 INFO L87 Difference]: Start difference. First operand 173774 states and 188774 transitions. Second operand 3 states. [2018-10-23 20:18:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:49,633 INFO L93 Difference]: Finished difference Result 345167 states and 374776 transitions. [2018-10-23 20:18:49,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:18:49,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 548 [2018-10-23 20:18:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:49,834 INFO L225 Difference]: With dead ends: 345167 [2018-10-23 20:18:49,834 INFO L226 Difference]: Without dead ends: 172180 [2018-10-23 20:18:49,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:18:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172180 states. [2018-10-23 20:18:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172180 to 172180. [2018-10-23 20:18:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172180 states. [2018-10-23 20:18:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172180 states to 172180 states and 186762 transitions. [2018-10-23 20:18:51,515 INFO L78 Accepts]: Start accepts. Automaton has 172180 states and 186762 transitions. Word has length 548 [2018-10-23 20:18:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:51,518 INFO L481 AbstractCegarLoop]: Abstraction has 172180 states and 186762 transitions. [2018-10-23 20:18:51,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:18:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 172180 states and 186762 transitions. [2018-10-23 20:18:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-10-23 20:18:51,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:51,542 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-23 20:18:51,542 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:51,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1654391557, now seen corresponding path program 1 times [2018-10-23 20:18:51,543 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:51,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:51,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:51,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:51,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-23 20:18:53,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:53,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:53,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:53,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:53,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:53,476 INFO L87 Difference]: Start difference. First operand 172180 states and 186762 transitions. Second operand 4 states. [2018-10-23 20:19:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:02,039 INFO L93 Difference]: Finished difference Result 342025 states and 371045 transitions. [2018-10-23 20:19:02,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:02,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 597 [2018-10-23 20:19:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:02,250 INFO L225 Difference]: With dead ends: 342025 [2018-10-23 20:19:02,250 INFO L226 Difference]: Without dead ends: 170635 [2018-10-23 20:19:02,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170635 states. [2018-10-23 20:19:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170635 to 168227. [2018-10-23 20:19:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168227 states. [2018-10-23 20:19:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168227 states to 168227 states and 178386 transitions. [2018-10-23 20:19:05,129 INFO L78 Accepts]: Start accepts. Automaton has 168227 states and 178386 transitions. Word has length 597 [2018-10-23 20:19:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:05,130 INFO L481 AbstractCegarLoop]: Abstraction has 168227 states and 178386 transitions. [2018-10-23 20:19:05,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 168227 states and 178386 transitions. [2018-10-23 20:19:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-10-23 20:19:05,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:05,161 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:05,161 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:05,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1916267275, now seen corresponding path program 1 times [2018-10-23 20:19:05,162 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:05,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:05,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:05,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:05,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 744 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-23 20:19:07,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:07,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:07,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:07,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:07,445 INFO L87 Difference]: Start difference. First operand 168227 states and 178386 transitions. Second operand 4 states. [2018-10-23 20:19:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:22,392 INFO L93 Difference]: Finished difference Result 334868 states and 355128 transitions. [2018-10-23 20:19:22,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:22,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 804 [2018-10-23 20:19:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:22,570 INFO L225 Difference]: With dead ends: 334868 [2018-10-23 20:19:22,570 INFO L226 Difference]: Without dead ends: 166641 [2018-10-23 20:19:22,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166641 states. [2018-10-23 20:19:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166641 to 165064. [2018-10-23 20:19:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165064 states. [2018-10-23 20:19:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165064 states to 165064 states and 174321 transitions. [2018-10-23 20:19:24,440 INFO L78 Accepts]: Start accepts. Automaton has 165064 states and 174321 transitions. Word has length 804 [2018-10-23 20:19:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:24,441 INFO L481 AbstractCegarLoop]: Abstraction has 165064 states and 174321 transitions. [2018-10-23 20:19:24,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:24,441 INFO L276 IsEmpty]: Start isEmpty. Operand 165064 states and 174321 transitions. [2018-10-23 20:19:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2018-10-23 20:19:24,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:24,485 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:24,486 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:24,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:24,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1082437482, now seen corresponding path program 1 times [2018-10-23 20:19:24,486 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:24,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:24,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:24,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:24,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-10-23 20:19:26,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:26,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:26,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:26,091 INFO L87 Difference]: Start difference. First operand 165064 states and 174321 transitions. Second operand 4 states. [2018-10-23 20:19:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:35,594 INFO L93 Difference]: Finished difference Result 329339 states and 347723 transitions. [2018-10-23 20:19:35,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:35,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 815 [2018-10-23 20:19:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:35,786 INFO L225 Difference]: With dead ends: 329339 [2018-10-23 20:19:35,787 INFO L226 Difference]: Without dead ends: 165065 [2018-10-23 20:19:35,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165065 states. [2018-10-23 20:19:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165065 to 158744. [2018-10-23 20:19:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158744 states. [2018-10-23 20:19:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158744 states to 158744 states and 165446 transitions. [2018-10-23 20:19:37,635 INFO L78 Accepts]: Start accepts. Automaton has 158744 states and 165446 transitions. Word has length 815 [2018-10-23 20:19:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:37,635 INFO L481 AbstractCegarLoop]: Abstraction has 158744 states and 165446 transitions. [2018-10-23 20:19:37,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 158744 states and 165446 transitions. [2018-10-23 20:19:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2018-10-23 20:19:37,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:37,678 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:37,678 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:37,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2024117446, now seen corresponding path program 1 times [2018-10-23 20:19:37,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:37,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:37,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:37,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:37,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:19:39,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:39,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:39,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:39,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:39,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:39,972 INFO L87 Difference]: Start difference. First operand 158744 states and 165446 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 20:19:50,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:19:50,126 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:19:50,132 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:19:50,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:19:50 BoogieIcfgContainer [2018-10-23 20:19:50,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:19:50,133 INFO L168 Benchmark]: Toolchain (without parser) took 226971.30 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,134 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:19:50,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2527.55 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 862.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.3 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,136 INFO L168 Benchmark]: Boogie Preprocessor took 439.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,137 INFO L168 Benchmark]: RCFGBuilder took 14624.56 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 248.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 587.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,138 INFO L168 Benchmark]: TraceAbstraction took 208510.17 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -130.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:50,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2527.55 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 862.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.3 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 439.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14624.56 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 248.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 587.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208510.17 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -130.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (158744states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (119019 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 177.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10817 SDtfs, 31152 SDslu, 3914 SDs, 0 SdLazy, 70456 SolverSat, 15525 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 139.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1389 GetRequests, 1339 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173774occurred 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: 15.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 48510 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 7985 NumberOfCodeBlocks, 7985 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7966 ConstructedInterpolants, 0 QuantifiedInterpolants, 9728658 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1758 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 10757/10827 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown