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_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:42:03,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:42:03,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:42:03,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:42:03,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:42:03,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:42:03,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:42:03,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:42:03,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:42:03,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:42:03,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:42:03,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:42:03,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:42:03,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:42:03,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:42:03,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:42:03,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:42:03,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:42:03,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:42:03,766 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:42:03,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:42:03,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:42:03,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:42:03,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:42:03,772 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:42:03,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:42:03,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:42:03,775 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:42:03,776 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:42:03,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:42:03,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:42:03,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:42:03,781 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:42:03,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:42:03,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:42:03,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:42:03,801 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:42:03,801 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:42:03,801 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:42:03,802 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:42:03,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:42:03,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:42:03,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:42:03,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:42:03,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:42:03,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:42:03,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:42:03,803 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:42:03,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:42:03,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:42:03,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:42:03,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:42:03,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:42:03,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:42:03,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:42:03,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:42:03,805 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:42:03,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:42:03,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:42:03,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:42:03,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:42:03,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:42:03,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:42:03,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:42:03,875 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:42:03,875 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:42:03,876 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-24 14:42:03,950 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e81388b6d/e1e8e5a31c9e4a5da22bcfa6a491bf02/FLAG69e76880c [2018-10-24 14:42:04,867 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:42:04,868 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label14_false-unreach-call.c [2018-10-24 14:42:04,919 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e81388b6d/e1e8e5a31c9e4a5da22bcfa6a491bf02/FLAG69e76880c [2018-10-24 14:42:04,935 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e81388b6d/e1e8e5a31c9e4a5da22bcfa6a491bf02 [2018-10-24 14:42:04,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:42:04,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:42:04,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:42:04,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:42:04,955 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:42:04,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:42:04" (1/1) ... [2018-10-24 14:42:04,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d47c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:04, skipping insertion in model container [2018-10-24 14:42:04,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:42:04" (1/1) ... [2018-10-24 14:42:04,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:42:05,232 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:42:07,154 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:42:07,158 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:42:08,199 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:42:08,263 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:42:08,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08 WrapperNode [2018-10-24 14:42:08,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:42:08,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:42:08,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:42:08,265 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:42:08,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:08,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:42:09,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:42:09,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:42:09,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:42:09,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:09,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:10,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... [2018-10-24 14:42:10,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:42:10,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:42:10,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:42:10,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:42:10,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:42:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:42:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:42:10,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:42:28,066 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:42:28,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:42:28 BoogieIcfgContainer [2018-10-24 14:42:28,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:42:28,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:42:28,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:42:28,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:42:28,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:42:04" (1/3) ... [2018-10-24 14:42:28,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6878d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:42:28, skipping insertion in model container [2018-10-24 14:42:28,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:42:08" (2/3) ... [2018-10-24 14:42:28,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6878d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:42:28, skipping insertion in model container [2018-10-24 14:42:28,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:42:28" (3/3) ... [2018-10-24 14:42:28,076 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label14_false-unreach-call.c [2018-10-24 14:42:28,087 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:42:28,100 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:42:28,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:42:28,173 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:42:28,174 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:42:28,174 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:42:28,175 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:42:28,175 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:42:28,175 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:42:28,175 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:42:28,175 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:42:28,175 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:42:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:42:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 14:42:28,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:28,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:28,250 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:28,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-10-24 14:42:28,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:28,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:28,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:28,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:28,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:28,650 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 14:42:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:42:28,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:28,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:42:28,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:28,685 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 14:42:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:55,949 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-24 14:42:55,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:55,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-24 14:42:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:56,009 INFO L225 Difference]: With dead ends: 6409 [2018-10-24 14:42:56,009 INFO L226 Difference]: Without dead ends: 4653 [2018-10-24 14:42:56,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:56,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-24 14:42:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-24 14:42:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-24 14:42:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-24 14:42:56,241 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 13 [2018-10-24 14:42:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:56,242 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-24 14:42:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-24 14:42:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-24 14:42:56,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:56,246 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:42:56,246 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:56,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1038770723, now seen corresponding path program 1 times [2018-10-24 14:42:56,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:56,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:56,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:56,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:56,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:56,655 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 14:42:57,324 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 14:42:57,591 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 14:42:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:42:57,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:57,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:42:57,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:42:57,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:42:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:42:57,758 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-24 14:43:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:34,404 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-10-24 14:43:34,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:43:34,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2018-10-24 14:43:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:34,489 INFO L225 Difference]: With dead ends: 20192 [2018-10-24 14:43:34,489 INFO L226 Difference]: Without dead ends: 15577 [2018-10-24 14:43:34,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:43:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-10-24 14:43:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-10-24 14:43:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-10-24 14:43:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-10-24 14:43:34,790 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 81 [2018-10-24 14:43:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:34,791 INFO L481 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-10-24 14:43:34,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:43:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-10-24 14:43:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-24 14:43:34,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:34,810 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:34,810 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:34,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:34,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1373656699, now seen corresponding path program 1 times [2018-10-24 14:43:34,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:34,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:34,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:34,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:34,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 14:43:36,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:36,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:43:36,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:43:36,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:43:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:43:36,011 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-10-24 14:43:36,259 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-24 14:44:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:12,472 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-10-24 14:44:12,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:44:12,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2018-10-24 14:44:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:12,548 INFO L225 Difference]: With dead ends: 40712 [2018-10-24 14:44:12,549 INFO L226 Difference]: Without dead ends: 26510 [2018-10-24 14:44:12,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:44:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-10-24 14:44:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-10-24 14:44:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-24 14:44:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-24 14:44:13,025 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 299 [2018-10-24 14:44:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:13,026 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-24 14:44:13,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:44:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-24 14:44:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-24 14:44:13,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:13,038 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:13,039 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:13,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1286875605, now seen corresponding path program 1 times [2018-10-24 14:44:13,039 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:13,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:13,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:13,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:13,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 14:44:13,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:44:13,582 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:44:13,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:13,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:44:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:44:13,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:44:13,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:44:13,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:13,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:13,885 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-10-24 14:44:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:33,957 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-10-24 14:44:33,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:33,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2018-10-24 14:44:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:34,066 INFO L225 Difference]: With dead ends: 79222 [2018-10-24 14:44:34,067 INFO L226 Difference]: Without dead ends: 56816 [2018-10-24 14:44:34,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:34,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-10-24 14:44:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-10-24 14:44:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-10-24 14:44:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-10-24 14:44:34,986 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 327 [2018-10-24 14:44:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:34,987 INFO L481 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-10-24 14:44:34,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-10-24 14:44:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-24 14:44:34,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:34,997 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:34,997 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:34,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1051129623, now seen corresponding path program 1 times [2018-10-24 14:44:34,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:34,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:34,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:34,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:34,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:44:35,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:35,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:44:35,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:44:35,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:44:35,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:44:35,703 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-10-24 14:44:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:47,443 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-10-24 14:44:47,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:44:47,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2018-10-24 14:44:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:47,524 INFO L225 Difference]: With dead ends: 87227 [2018-10-24 14:44:47,524 INFO L226 Difference]: Without dead ends: 48434 [2018-10-24 14:44:47,574 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 14:44:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-10-24 14:44:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-10-24 14:44:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-10-24 14:44:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-10-24 14:44:48,160 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 360 [2018-10-24 14:44:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:48,161 INFO L481 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-10-24 14:44:48,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:44:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-10-24 14:44:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-24 14:44:48,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:48,172 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:48,173 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:48,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:48,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1611422899, now seen corresponding path program 1 times [2018-10-24 14:44:48,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:48,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:48,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:48,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:48,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 242 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-24 14:44:49,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:44:49,113 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:44:49,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:49,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:44:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 14:44:49,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:44:49,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:44:49,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:44:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:44:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:44:49,626 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-10-24 14:45:15,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:15,314 INFO L93 Difference]: Finished difference Result 203613 states and 269958 transitions. [2018-10-24 14:45:15,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:45:15,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-24 14:45:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:15,514 INFO L225 Difference]: With dead ends: 203613 [2018-10-24 14:45:15,514 INFO L226 Difference]: Without dead ends: 156595 [2018-10-24 14:45:15,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:45:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156595 states. [2018-10-24 14:45:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156595 to 111203. [2018-10-24 14:45:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111203 states. [2018-10-24 14:45:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111203 states to 111203 states and 133601 transitions. [2018-10-24 14:45:17,219 INFO L78 Accepts]: Start accepts. Automaton has 111203 states and 133601 transitions. Word has length 483 [2018-10-24 14:45:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:45:17,220 INFO L481 AbstractCegarLoop]: Abstraction has 111203 states and 133601 transitions. [2018-10-24 14:45:17,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:45:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 111203 states and 133601 transitions. [2018-10-24 14:45:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-24 14:45:17,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:45:17,261 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:45:17,261 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:45:17,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:45:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1566320655, now seen corresponding path program 1 times [2018-10-24 14:45:17,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:45:17,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:45:17,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:17,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:17,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 708 proven. 4 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-24 14:45:19,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:45:19,357 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:45:19,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:19,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:45:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-10-24 14:45:20,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:45:20,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:45:20,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:45:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:45:20,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:45:20,679 INFO L87 Difference]: Start difference. First operand 111203 states and 133601 transitions. Second operand 5 states. [2018-10-24 14:45:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:40,851 INFO L93 Difference]: Finished difference Result 231968 states and 277242 transitions. [2018-10-24 14:45:40,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:45:40,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-24 14:45:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:40,973 INFO L225 Difference]: With dead ends: 231968 [2018-10-24 14:45:40,973 INFO L226 Difference]: Without dead ends: 118032 [2018-10-24 14:45:41,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 863 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:45:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118032 states. [2018-10-24 14:45:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118032 to 109830. [2018-10-24 14:45:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109830 states. [2018-10-24 14:45:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109830 states to 109830 states and 123617 transitions. [2018-10-24 14:45:42,055 INFO L78 Accepts]: Start accepts. Automaton has 109830 states and 123617 transitions. Word has length 863 [2018-10-24 14:45:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:45:42,056 INFO L481 AbstractCegarLoop]: Abstraction has 109830 states and 123617 transitions. [2018-10-24 14:45:42,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:45:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 109830 states and 123617 transitions. [2018-10-24 14:45:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-10-24 14:45:42,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:45:42,106 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 14:45:42,106 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:45:42,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:45:42,107 INFO L82 PathProgramCache]: Analyzing trace with hash 614805490, now seen corresponding path program 1 times [2018-10-24 14:45:42,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:45:42,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:45:42,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:42,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:42,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:45:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 617 proven. 72 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-24 14:45:43,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:45:43,969 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:45:43,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:45:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:45:44,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:45:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-24 14:45:45,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:45:45,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:45:45,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:45:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:45:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:45:45,189 INFO L87 Difference]: Start difference. First operand 109830 states and 123617 transitions. Second operand 5 states. [2018-10-24 14:45:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:45:58,778 INFO L93 Difference]: Finished difference Result 283869 states and 320742 transitions. [2018-10-24 14:45:58,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:45:58,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1034 [2018-10-24 14:45:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:45:58,964 INFO L225 Difference]: With dead ends: 283869 [2018-10-24 14:45:58,964 INFO L226 Difference]: Without dead ends: 175407 [2018-10-24 14:45:59,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 1033 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:45:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175407 states. [2018-10-24 14:46:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175407 to 172659. [2018-10-24 14:46:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172659 states. [2018-10-24 14:46:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172659 states to 172659 states and 189940 transitions. [2018-10-24 14:46:01,044 INFO L78 Accepts]: Start accepts. Automaton has 172659 states and 189940 transitions. Word has length 1034 [2018-10-24 14:46:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:46:01,045 INFO L481 AbstractCegarLoop]: Abstraction has 172659 states and 189940 transitions. [2018-10-24 14:46:01,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:46:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 172659 states and 189940 transitions. [2018-10-24 14:46:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1185 [2018-10-24 14:46:01,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:01,070 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-10-24 14:46:01,070 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:01,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash 937562663, now seen corresponding path program 1 times [2018-10-24 14:46:01,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:01,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:01,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:01,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:01,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 14:46:01,528 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 14:46:01,532 INFO L168 Benchmark]: Toolchain (without parser) took 236582.65 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 2.3 GB in the end (delta: -885.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 14:46:01,533 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:46:01,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3313.38 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 14:46:01,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 1164.22 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 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 106.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:46:01,535 INFO L168 Benchmark]: Boogie Preprocessor took 1033.09 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: 101.7 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:46:01,536 INFO L168 Benchmark]: RCFGBuilder took 17604.61 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.9 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -384.1 MB). Peak memory consumption was 841.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:46:01,537 INFO L168 Benchmark]: TraceAbstraction took 213462.24 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 161.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:46:01,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 3313.38 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 1164.22 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 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 106.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1033.09 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: 101.7 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17604.61 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 289.9 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -384.1 MB). Peak memory consumption was 841.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213462.24 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 161.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown