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/Problem19_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:05:04,057 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:05:04,059 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:05:04,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:05:04,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:05:04,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:05:04,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:05:04,077 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:05:04,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:05:04,080 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:05:04,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:05:04,081 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:05:04,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:05:04,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:05:04,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:05:04,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:05:04,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:05:04,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:05:04,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:05:04,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:05:04,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:05:04,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:05:04,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:05:04,096 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:05:04,096 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:05:04,097 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:05:04,098 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:05:04,099 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:05:04,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:05:04,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:05:04,101 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:05:04,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:05:04,104 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:05:04,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:05:04,130 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:05:04,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:05:04,131 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:05:04,132 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:05:04,132 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:05:04,132 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:05:04,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:05:04,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:05:04,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:05:04,134 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:05:04,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:05:04,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:05:04,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:05:04,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:05:04,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:05:04,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:05:04,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:05:04,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:05:04,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:04,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:05:04,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:05:04,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:05:04,138 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:05:04,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:05:04,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:05:04,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:05:04,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:05:04,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:05:04,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:05:04,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:05:04,227 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:05:04,228 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:05:04,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-10-24 17:05:04,290 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87a419be2/a0131338f8e04516975677f8e41fcdbc/FLAGe28f47f43 [2018-10-24 17:05:05,229 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:05:05,230 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-10-24 17:05:05,281 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87a419be2/a0131338f8e04516975677f8e41fcdbc/FLAGe28f47f43 [2018-10-24 17:05:05,300 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87a419be2/a0131338f8e04516975677f8e41fcdbc [2018-10-24 17:05:05,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:05:05,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:05:05,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:05,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:05:05,324 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:05:05,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:05" (1/1) ... [2018-10-24 17:05:05,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:05, skipping insertion in model container [2018-10-24 17:05:05,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:05" (1/1) ... [2018-10-24 17:05:05,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:05:05,604 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:05:07,565 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:07,571 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:05:08,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:09,035 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:05:09,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09 WrapperNode [2018-10-24 17:05:09,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:09,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:09,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:05:09,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:05:09,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:09,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:10,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:05:10,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:05:10,228 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:05:10,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... [2018-10-24 17:05:10,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:05:10,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:05:10,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:05:10,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:05:10,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:05:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:05:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:05:27,506 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:05:27,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:05:27 BoogieIcfgContainer [2018-10-24 17:05:27,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:05:27,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:05:27,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:05:27,512 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:05:27,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:05:05" (1/3) ... [2018-10-24 17:05:27,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37217344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:05:27, skipping insertion in model container [2018-10-24 17:05:27,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:09" (2/3) ... [2018-10-24 17:05:27,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37217344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:05:27, skipping insertion in model container [2018-10-24 17:05:27,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:05:27" (3/3) ... [2018-10-24 17:05:27,516 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label16_true-unreach-call.c [2018-10-24 17:05:27,526 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:05:27,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:05:27,558 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:05:27,613 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:05:27,614 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:05:27,614 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:05:27,614 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:05:27,615 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:05:27,615 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:05:27,615 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:05:27,615 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:05:27,615 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:05:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:05:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 17:05:27,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:27,674 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] [2018-10-24 17:05:27,676 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:27,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1704727530, now seen corresponding path program 1 times [2018-10-24 17:05:27,685 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:27,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:27,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:27,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:27,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:28,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:28,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:05:28,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:28,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:28,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:28,244 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:05:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:54,709 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-24 17:05:54,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:54,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-24 17:05:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:54,771 INFO L225 Difference]: With dead ends: 6409 [2018-10-24 17:05:54,771 INFO L226 Difference]: Without dead ends: 4653 [2018-10-24 17:05:54,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-24 17:05:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-24 17:05:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-24 17:05:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-24 17:05:54,993 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 54 [2018-10-24 17:05:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:54,993 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-24 17:05:54,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-24 17:05:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 17:05:54,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:55,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:55,000 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:55,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1812485294, now seen corresponding path program 1 times [2018-10-24 17:05:55,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:55,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:55,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:55,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:55,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:55,449 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:05:56,123 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:05:56,850 WARN L179 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:05:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:57,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:57,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:05:57,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:05:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:05:57,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:05:57,040 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-24 17:06:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:33,204 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-10-24 17:06:33,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:06:33,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 17:06:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:33,279 INFO L225 Difference]: With dead ends: 20192 [2018-10-24 17:06:33,279 INFO L226 Difference]: Without dead ends: 15577 [2018-10-24 17:06:33,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:06:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-10-24 17:06:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-10-24 17:06:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-10-24 17:06:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-10-24 17:06:33,556 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 122 [2018-10-24 17:06:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:33,557 INFO L481 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-10-24 17:06:33,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:06:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-10-24 17:06:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-24 17:06:33,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:33,566 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, 2, 2, 2, 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] [2018-10-24 17:06:33,566 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:33,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:33,567 INFO L82 PathProgramCache]: Analyzing trace with hash -233182779, now seen corresponding path program 1 times [2018-10-24 17:06:33,567 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:33,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:33,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:33,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:33,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:34,303 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:06:34,832 WARN L179 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:06:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-24 17:06:35,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:35,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:06:35,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:06:35,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:06:35,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:06:35,342 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-10-24 17:07:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:10,631 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-10-24 17:07:10,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:07:10,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2018-10-24 17:07:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:10,704 INFO L225 Difference]: With dead ends: 40712 [2018-10-24 17:07:10,705 INFO L226 Difference]: Without dead ends: 26510 [2018-10-24 17:07:10,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:07:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-10-24 17:07:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-10-24 17:07:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-24 17:07:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-24 17:07:11,161 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 340 [2018-10-24 17:07:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:11,162 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-24 17:07:11,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:07:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-24 17:07:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-24 17:07:11,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:11,177 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, 2, 2, 2, 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] [2018-10-24 17:07:11,177 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:11,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2101152607, now seen corresponding path program 1 times [2018-10-24 17:07:11,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:11,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:11,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:11,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:11,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 17:07:11,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:11,751 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:07:11,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:11,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:07:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:12,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:12,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:07:12,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:12,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:12,196 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-10-24 17:07:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:39,750 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-10-24 17:07:39,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:39,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-24 17:07:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:39,865 INFO L225 Difference]: With dead ends: 79222 [2018-10-24 17:07:39,865 INFO L226 Difference]: Without dead ends: 56816 [2018-10-24 17:07:39,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-10-24 17:07:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-10-24 17:07:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-10-24 17:07:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-10-24 17:07:40,668 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 368 [2018-10-24 17:07:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:40,669 INFO L481 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-10-24 17:07:40,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-10-24 17:07:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-10-24 17:07:40,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:40,681 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:07:40,681 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:40,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash 326717111, now seen corresponding path program 1 times [2018-10-24 17:07:40,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:40,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:40,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:40,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:40,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:41,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:41,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:41,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:07:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:07:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:07:41,473 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-10-24 17:07:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:54,915 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-10-24 17:07:54,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:07:54,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 401 [2018-10-24 17:07:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:55,004 INFO L225 Difference]: With dead ends: 87227 [2018-10-24 17:07:55,004 INFO L226 Difference]: Without dead ends: 48434 [2018-10-24 17:07:55,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:07:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-10-24 17:07:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-10-24 17:07:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-10-24 17:07:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-10-24 17:07:55,622 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 401 [2018-10-24 17:07:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:55,623 INFO L481 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-10-24 17:07:55,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:07:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-10-24 17:07:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-10-24 17:07:55,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:55,640 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:55,640 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:55,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash -69213474, now seen corresponding path program 1 times [2018-10-24 17:07:55,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:55,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:55,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:55,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:55,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 324 proven. 65 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 17:07:56,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:56,643 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:07:56,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:56,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:07:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-24 17:07:57,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:57,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:07:57,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:07:57,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:07:57,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:07:57,069 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-10-24 17:08:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:23,360 INFO L93 Difference]: Finished difference Result 202247 states and 268382 transitions. [2018-10-24 17:08:23,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 17:08:23,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 524 [2018-10-24 17:08:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:23,528 INFO L225 Difference]: With dead ends: 202247 [2018-10-24 17:08:23,529 INFO L226 Difference]: Without dead ends: 155229 [2018-10-24 17:08:23,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:08:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155229 states. [2018-10-24 17:08:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155229 to 109837. [2018-10-24 17:08:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109837 states. [2018-10-24 17:08:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109837 states to 109837 states and 132115 transitions. [2018-10-24 17:08:24,923 INFO L78 Accepts]: Start accepts. Automaton has 109837 states and 132115 transitions. Word has length 524 [2018-10-24 17:08:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:24,924 INFO L481 AbstractCegarLoop]: Abstraction has 109837 states and 132115 transitions. [2018-10-24 17:08:24,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:08:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 109837 states and 132115 transitions. [2018-10-24 17:08:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-10-24 17:08:24,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:24,985 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:24,986 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:24,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash -712042280, now seen corresponding path program 1 times [2018-10-24 17:08:24,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:24,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:24,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:24,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:24,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:26,634 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:08:26,917 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-24 17:08:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 413 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-24 17:08:27,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:08:27,889 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:08:27,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:28,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:08:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-24 17:08:29,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:08:29,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:08:29,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:08:29,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:08:29,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:08:29,043 INFO L87 Difference]: Start difference. First operand 109837 states and 132115 transitions. Second operand 5 states. [2018-10-24 17:08:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:51,258 INFO L93 Difference]: Finished difference Result 229236 states and 274270 transitions. [2018-10-24 17:08:51,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:08:51,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 983 [2018-10-24 17:08:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:51,406 INFO L225 Difference]: With dead ends: 229236 [2018-10-24 17:08:51,406 INFO L226 Difference]: Without dead ends: 116666 [2018-10-24 17:08:51,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 983 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:08:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116666 states. [2018-10-24 17:08:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116666 to 108464. [2018-10-24 17:08:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108464 states. [2018-10-24 17:08:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108464 states to 108464 states and 122176 transitions. [2018-10-24 17:08:52,651 INFO L78 Accepts]: Start accepts. Automaton has 108464 states and 122176 transitions. Word has length 983 [2018-10-24 17:08:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:52,652 INFO L481 AbstractCegarLoop]: Abstraction has 108464 states and 122176 transitions. [2018-10-24 17:08:52,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:08:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 108464 states and 122176 transitions. [2018-10-24 17:08:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2018-10-24 17:08:52,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:52,720 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:08:52,721 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:52,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash 928118561, now seen corresponding path program 1 times [2018-10-24 17:08:52,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:52,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:52,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:52,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:52,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 721 proven. 72 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-24 17:08:54,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:08:54,776 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:08:54,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:55,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:08:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-24 17:08:56,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:08:56,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 17:08:56,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:08:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:08:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:08:56,223 INFO L87 Difference]: Start difference. First operand 108464 states and 122176 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 17:09:02,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:02,784 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:09:02,789 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:09:02,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:09:02 BoogieIcfgContainer [2018-10-24 17:09:02,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:09:02,790 INFO L168 Benchmark]: Toolchain (without parser) took 237475.10 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 555.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,792 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:09:02,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3718.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 1189.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,798 INFO L168 Benchmark]: Boogie Preprocessor took 762.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 93.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,798 INFO L168 Benchmark]: RCFGBuilder took 16517.14 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -380.7 MB). Peak memory consumption was 874.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,803 INFO L168 Benchmark]: TraceAbstraction took 215281.01 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -878.0 MB). Peak memory consumption was 451.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:02,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3718.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1189.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 762.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 93.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16517.14 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -380.7 MB). Peak memory consumption was 874.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215281.01 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -878.0 MB). Peak memory consumption was 451.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (108464states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (52346 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 215.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 194.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11427 SDtfs, 43338 SDslu, 3412 SDs, 0 SdLazy, 86551 SolverSat, 17690 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 166.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3081 GetRequests, 3039 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109837occurred in iteration=6, 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: 4.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 79908 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 6989 NumberOfCodeBlocks, 6989 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6977 ConstructedInterpolants, 0 QuantifiedInterpolants, 16712016 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3491 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 4753/4898 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown