java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:17:59,947 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:17:59,949 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:17:59,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:17:59,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:17:59,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:17:59,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:17:59,968 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:17:59,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:17:59,973 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:17:59,974 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:17:59,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:17:59,977 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:17:59,980 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:17:59,981 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:17:59,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:17:59,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:17:59,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:17:59,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:17:59,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:17:59,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:17:59,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:18:00,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:18:00,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:18:00,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:18:00,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:18:00,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:18:00,003 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:18:00,004 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:18:00,005 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:18:00,005 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:18:00,006 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:18:00,008 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:18:00,023 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:18:00,023 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:18:00,024 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:18:00,024 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:18:00,025 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:18:00,025 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:18:00,025 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:18:00,025 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:18:00,025 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:18:00,026 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:18:00,026 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:18:00,026 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:18:00,026 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:18:00,026 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:18:00,027 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:18:00,027 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:18:00,027 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:18:00,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:18:00,027 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:18:00,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:18:00,028 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:18:00,028 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:18:00,028 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:18:00,028 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:18:00,028 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:18:00,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:18:00,029 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:18:00,029 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:18:00,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:18:00,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:18:00,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:18:00,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:18:00,090 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:18:00,094 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-10-24 16:18:00,163 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2776a8872/bba71e6e354d4d39b3ccebf4b7c9e933/FLAG1eccf5f67 [2018-10-24 16:18:01,017 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:18:01,018 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-10-24 16:18:01,057 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2776a8872/bba71e6e354d4d39b3ccebf4b7c9e933/FLAG1eccf5f67 [2018-10-24 16:18:01,077 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2776a8872/bba71e6e354d4d39b3ccebf4b7c9e933 [2018-10-24 16:18:01,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:18:01,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:18:01,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:18:01,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:18:01,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:18:01,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:18:01" (1/1) ... [2018-10-24 16:18:01,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:01, skipping insertion in model container [2018-10-24 16:18:01,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:18:01" (1/1) ... [2018-10-24 16:18:01,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:18:01,309 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:18:02,686 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:18:02,690 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:18:03,488 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:18:03,521 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:18:03,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03 WrapperNode [2018-10-24 16:18:03,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:18:03,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:18:03,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:18:03,523 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:18:03,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:03,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:18:04,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:18:04,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:18:04,328 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:18:04,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... [2018-10-24 16:18:04,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:18:04,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:18:04,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:18:04,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:18:04,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:18:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:18:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:18:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:18:20,317 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:18:20,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:18:20 BoogieIcfgContainer [2018-10-24 16:18:20,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:18:20,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:18:20,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:18:20,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:18:20,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:18:01" (1/3) ... [2018-10-24 16:18:20,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6c5dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:18:20, skipping insertion in model container [2018-10-24 16:18:20,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:18:03" (2/3) ... [2018-10-24 16:18:20,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6c5dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:18:20, skipping insertion in model container [2018-10-24 16:18:20,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:18:20" (3/3) ... [2018-10-24 16:18:20,326 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label01_true-unreach-call.c [2018-10-24 16:18:20,336 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:18:20,347 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:18:20,362 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:18:20,405 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:18:20,406 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:18:20,406 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:18:20,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:18:20,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:18:20,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:18:20,407 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:18:20,407 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:18:20,407 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:18:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:18:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 16:18:20,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:20,454 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] [2018-10-24 16:18:20,457 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:20,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:20,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1705034714, now seen corresponding path program 1 times [2018-10-24 16:18:20,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:20,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:20,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:20,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:20,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:21,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:21,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:18:21,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:18:21,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:18:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:21,028 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:18:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:40,830 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:18:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:18:40,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 16:18:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:40,885 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:18:40,885 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:18:40,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:18:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:18:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:18:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:18:41,055 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 50 [2018-10-24 16:18:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:41,057 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:18:41,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:18:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:18:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 16:18:41,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:41,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:41,067 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:41,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 726882018, now seen corresponding path program 1 times [2018-10-24 16:18:41,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:41,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:41,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:41,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:41,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:41,633 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:18:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:41,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:41,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:18:41,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:18:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:18:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:18:41,935 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:18:42,231 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:18:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:58,678 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:18:58,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:18:58,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-24 16:18:58,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:58,711 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:18:58,711 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:18:58,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:18:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:18:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:18:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:18:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:18:58,819 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 116 [2018-10-24 16:18:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:58,820 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:18:58,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:18:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:18:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 16:18:58,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:58,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:58,836 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:58,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -634399515, now seen corresponding path program 1 times [2018-10-24 16:18:58,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:58,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:58,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:58,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:58,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:59,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:18:59,131 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:18:59,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:59,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:18:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:59,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:18:59,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-24 16:18:59,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:18:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:18:59,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:18:59,327 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-24 16:19:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:22,033 INFO L93 Difference]: Finished difference Result 19941 states and 31624 transitions. [2018-10-24 16:19:22,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:19:22,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-10-24 16:19:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:22,105 INFO L225 Difference]: With dead ends: 19941 [2018-10-24 16:19:22,106 INFO L226 Difference]: Without dead ends: 15614 [2018-10-24 16:19:22,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15614 states. [2018-10-24 16:19:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15614 to 15431. [2018-10-24 16:19:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15431 states. [2018-10-24 16:19:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15431 states to 15431 states and 21997 transitions. [2018-10-24 16:19:22,426 INFO L78 Accepts]: Start accepts. Automaton has 15431 states and 21997 transitions. Word has length 176 [2018-10-24 16:19:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:22,427 INFO L481 AbstractCegarLoop]: Abstraction has 15431 states and 21997 transitions. [2018-10-24 16:19:22,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:19:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15431 states and 21997 transitions. [2018-10-24 16:19:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-24 16:19:22,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:22,439 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:22,439 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:22,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash -186093611, now seen corresponding path program 1 times [2018-10-24 16:19:22,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:22,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:22,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:22,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:22,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:22,832 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:19:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:19:22,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:19:22,885 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:19:22,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:22,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:19:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:23,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:19:23,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:19:23,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:23,068 INFO L87 Difference]: Start difference. First operand 15431 states and 21997 transitions. Second operand 4 states. [2018-10-24 16:19:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:34,274 INFO L93 Difference]: Finished difference Result 51405 states and 74493 transitions. [2018-10-24 16:19:34,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:34,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-10-24 16:19:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:34,390 INFO L225 Difference]: With dead ends: 51405 [2018-10-24 16:19:34,390 INFO L226 Difference]: Without dead ends: 36764 [2018-10-24 16:19:34,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36764 states. [2018-10-24 16:19:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36764 to 27253. [2018-10-24 16:19:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27253 states. [2018-10-24 16:19:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27253 states to 27253 states and 35849 transitions. [2018-10-24 16:19:34,996 INFO L78 Accepts]: Start accepts. Automaton has 27253 states and 35849 transitions. Word has length 256 [2018-10-24 16:19:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:34,997 INFO L481 AbstractCegarLoop]: Abstraction has 27253 states and 35849 transitions. [2018-10-24 16:19:34,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 27253 states and 35849 transitions. [2018-10-24 16:19:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-24 16:19:35,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:35,007 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:35,007 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:35,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:35,007 INFO L82 PathProgramCache]: Analyzing trace with hash 76225513, now seen corresponding path program 1 times [2018-10-24 16:19:35,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:35,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:35,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:35,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:35,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 16:19:35,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:35,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:19:35,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:19:35,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:19:35,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:19:35,329 INFO L87 Difference]: Start difference. First operand 27253 states and 35849 transitions. Second operand 3 states. [2018-10-24 16:19:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:42,739 INFO L93 Difference]: Finished difference Result 74989 states and 99704 transitions. [2018-10-24 16:19:42,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:19:42,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 282 [2018-10-24 16:19:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:42,842 INFO L225 Difference]: With dead ends: 74989 [2018-10-24 16:19:42,843 INFO L226 Difference]: Without dead ends: 48526 [2018-10-24 16:19:42,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:19:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48526 states. [2018-10-24 16:19:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48526 to 48525. [2018-10-24 16:19:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48525 states. [2018-10-24 16:19:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48525 states to 48525 states and 59747 transitions. [2018-10-24 16:19:43,666 INFO L78 Accepts]: Start accepts. Automaton has 48525 states and 59747 transitions. Word has length 282 [2018-10-24 16:19:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:43,666 INFO L481 AbstractCegarLoop]: Abstraction has 48525 states and 59747 transitions. [2018-10-24 16:19:43,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:19:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 48525 states and 59747 transitions. [2018-10-24 16:19:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-24 16:19:43,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:43,687 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:19:43,688 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:43,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:43,688 INFO L82 PathProgramCache]: Analyzing trace with hash -469585045, now seen corresponding path program 1 times [2018-10-24 16:19:43,688 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:43,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:43,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:43,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:43,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:44,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:44,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:44,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:44,325 INFO L87 Difference]: Start difference. First operand 48525 states and 59747 transitions. Second operand 4 states. [2018-10-24 16:19:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:57,164 INFO L93 Difference]: Finished difference Result 166424 states and 205894 transitions. [2018-10-24 16:19:57,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:57,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2018-10-24 16:19:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:57,443 INFO L225 Difference]: With dead ends: 166424 [2018-10-24 16:19:57,444 INFO L226 Difference]: Without dead ends: 118689 [2018-10-24 16:19:57,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118689 states. [2018-10-24 16:19:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118689 to 110774. [2018-10-24 16:19:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110774 states. [2018-10-24 16:19:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110774 states to 110774 states and 131469 transitions. [2018-10-24 16:19:59,509 INFO L78 Accepts]: Start accepts. Automaton has 110774 states and 131469 transitions. Word has length 357 [2018-10-24 16:19:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:59,510 INFO L481 AbstractCegarLoop]: Abstraction has 110774 states and 131469 transitions. [2018-10-24 16:19:59,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 110774 states and 131469 transitions. [2018-10-24 16:19:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-24 16:19:59,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:59,538 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:59,539 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:59,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1780726556, now seen corresponding path program 1 times [2018-10-24 16:19:59,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:59,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:59,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-10-24 16:19:59,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:59,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:59,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:19:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:19:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:59,906 INFO L87 Difference]: Start difference. First operand 110774 states and 131469 transitions. Second operand 5 states. [2018-10-24 16:20:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:21,870 INFO L93 Difference]: Finished difference Result 329021 states and 393364 transitions. [2018-10-24 16:20:21,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:21,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2018-10-24 16:20:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:22,168 INFO L225 Difference]: With dead ends: 329021 [2018-10-24 16:20:22,168 INFO L226 Difference]: Without dead ends: 219037 [2018-10-24 16:20:22,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219037 states. [2018-10-24 16:20:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219037 to 214117. [2018-10-24 16:20:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214117 states. [2018-10-24 16:20:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214117 states to 214117 states and 249819 transitions. [2018-10-24 16:20:25,761 INFO L78 Accepts]: Start accepts. Automaton has 214117 states and 249819 transitions. Word has length 426 [2018-10-24 16:20:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:25,762 INFO L481 AbstractCegarLoop]: Abstraction has 214117 states and 249819 transitions. [2018-10-24 16:20:25,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 214117 states and 249819 transitions. [2018-10-24 16:20:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-24 16:20:25,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:25,791 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:25,791 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:25,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 175327827, now seen corresponding path program 1 times [2018-10-24 16:20:25,795 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:25,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:25,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:25,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:25,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-24 16:20:26,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:26,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:26,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:26,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:26,173 INFO L87 Difference]: Start difference. First operand 214117 states and 249819 transitions. Second operand 4 states. [2018-10-24 16:20:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:36,263 INFO L93 Difference]: Finished difference Result 443202 states and 516152 transitions. [2018-10-24 16:20:36,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:36,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2018-10-24 16:20:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:36,490 INFO L225 Difference]: With dead ends: 443202 [2018-10-24 16:20:36,490 INFO L226 Difference]: Without dead ends: 195898 [2018-10-24 16:20:36,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195898 states. [2018-10-24 16:20:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195898 to 164369. [2018-10-24 16:20:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164369 states. [2018-10-24 16:20:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164369 states to 164369 states and 188659 transitions. [2018-10-24 16:20:39,471 INFO L78 Accepts]: Start accepts. Automaton has 164369 states and 188659 transitions. Word has length 431 [2018-10-24 16:20:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:39,472 INFO L481 AbstractCegarLoop]: Abstraction has 164369 states and 188659 transitions. [2018-10-24 16:20:39,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 164369 states and 188659 transitions. [2018-10-24 16:20:39,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-24 16:20:39,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:39,479 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:39,479 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:39,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:39,480 INFO L82 PathProgramCache]: Analyzing trace with hash 218845266, now seen corresponding path program 1 times [2018-10-24 16:20:39,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:39,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:39,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:39,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:39,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 519 proven. 5 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-24 16:20:40,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:40,228 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:40,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:40,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-10-24 16:20:42,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:42,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:20:42,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:42,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:42,150 INFO L87 Difference]: Start difference. First operand 164369 states and 188659 transitions. Second operand 5 states. [2018-10-24 16:20:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:50,528 INFO L93 Difference]: Finished difference Result 329494 states and 379612 transitions. [2018-10-24 16:20:50,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:50,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 488 [2018-10-24 16:20:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:50,733 INFO L225 Difference]: With dead ends: 329494 [2018-10-24 16:20:50,733 INFO L226 Difference]: Without dead ends: 165915 [2018-10-24 16:20:52,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 489 SyntacticMatches, 5 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 16:20:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165915 states. [2018-10-24 16:20:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165915 to 162758. [2018-10-24 16:20:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162758 states. [2018-10-24 16:20:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162758 states to 162758 states and 179180 transitions. [2018-10-24 16:20:55,749 INFO L78 Accepts]: Start accepts. Automaton has 162758 states and 179180 transitions. Word has length 488 [2018-10-24 16:20:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:55,749 INFO L481 AbstractCegarLoop]: Abstraction has 162758 states and 179180 transitions. [2018-10-24 16:20:55,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 162758 states and 179180 transitions. [2018-10-24 16:20:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-10-24 16:20:55,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:55,760 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:55,760 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:55,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1564234871, now seen corresponding path program 1 times [2018-10-24 16:20:55,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:55,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:55,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:20:56,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:56,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:20:56,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:20:56,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:20:56,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:20:56,298 INFO L87 Difference]: Start difference. First operand 162758 states and 179180 transitions. Second operand 3 states. [2018-10-24 16:21:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:04,758 INFO L93 Difference]: Finished difference Result 323922 states and 356426 transitions. [2018-10-24 16:21:04,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:04,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 540 [2018-10-24 16:21:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:04,940 INFO L225 Difference]: With dead ends: 323922 [2018-10-24 16:21:04,940 INFO L226 Difference]: Without dead ends: 161951 [2018-10-24 16:21:05,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161951 states. [2018-10-24 16:21:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161951 to 161951. [2018-10-24 16:21:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161951 states. [2018-10-24 16:21:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161951 states to 161951 states and 178005 transitions. [2018-10-24 16:21:06,723 INFO L78 Accepts]: Start accepts. Automaton has 161951 states and 178005 transitions. Word has length 540 [2018-10-24 16:21:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:06,723 INFO L481 AbstractCegarLoop]: Abstraction has 161951 states and 178005 transitions. [2018-10-24 16:21:06,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 161951 states and 178005 transitions. [2018-10-24 16:21:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-10-24 16:21:06,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:06,748 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:06,749 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:06,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1428795942, now seen corresponding path program 1 times [2018-10-24 16:21:06,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:06,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:06,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:06,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:06,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 627 proven. 8 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-24 16:21:08,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:08,025 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:21:08,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:08,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-24 16:21:09,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:09,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:21:09,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:21:09,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:21:09,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:21:09,162 INFO L87 Difference]: Start difference. First operand 161951 states and 178005 transitions. Second operand 7 states. [2018-10-24 16:21:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:32,405 INFO L93 Difference]: Finished difference Result 382252 states and 419214 transitions. [2018-10-24 16:21:32,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:21:32,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2018-10-24 16:21:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:32,700 INFO L225 Difference]: With dead ends: 382252 [2018-10-24 16:21:32,701 INFO L226 Difference]: Without dead ends: 221091 [2018-10-24 16:21:32,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 622 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:21:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221091 states. [2018-10-24 16:21:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221091 to 184801. [2018-10-24 16:21:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184801 states. [2018-10-24 16:21:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184801 states to 184801 states and 201570 transitions. [2018-10-24 16:21:34,717 INFO L78 Accepts]: Start accepts. Automaton has 184801 states and 201570 transitions. Word has length 616 [2018-10-24 16:21:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:34,718 INFO L481 AbstractCegarLoop]: Abstraction has 184801 states and 201570 transitions. [2018-10-24 16:21:34,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:21:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 184801 states and 201570 transitions. [2018-10-24 16:21:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-10-24 16:21:34,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:34,733 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:34,733 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:34,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:34,733 INFO L82 PathProgramCache]: Analyzing trace with hash -794302738, now seen corresponding path program 1 times [2018-10-24 16:21:34,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:34,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:34,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:34,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:34,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-10-24 16:21:35,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:35,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:35,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:35,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:35,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:35,960 INFO L87 Difference]: Start difference. First operand 184801 states and 201570 transitions. Second operand 4 states. [2018-10-24 16:21:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:45,092 INFO L93 Difference]: Finished difference Result 394874 states and 430801 transitions. [2018-10-24 16:21:45,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:45,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 651 [2018-10-24 16:21:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:45,362 INFO L225 Difference]: With dead ends: 394874 [2018-10-24 16:21:45,362 INFO L226 Difference]: Without dead ends: 203756 [2018-10-24 16:21:45,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203756 states. Received shutdown request... [2018-10-24 16:21:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203756 to 171383. [2018-10-24 16:21:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171383 states. [2018-10-24 16:21:47,387 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:21:47,391 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:21:47,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:21:47 BoogieIcfgContainer [2018-10-24 16:21:47,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:21:47,392 INFO L168 Benchmark]: Toolchain (without parser) took 226300.19 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -354.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,393 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:21:47,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2427.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 804.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,395 INFO L168 Benchmark]: Boogie Preprocessor took 624.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,396 INFO L168 Benchmark]: RCFGBuilder took 15365.23 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 584.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,397 INFO L168 Benchmark]: TraceAbstraction took 207072.58 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 311.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:21:47,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 2427.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 804.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 624.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15365.23 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 584.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207072.58 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 311.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 176.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10182 SDtfs, 39843 SDslu, 3245 SDs, 0 SdLazy, 65365 SolverSat, 15181 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 137.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1600 GetRequests, 1553 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214117occurred in iteration=7, 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: 19.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 94352 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 5925 NumberOfCodeBlocks, 5925 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5909 ConstructedInterpolants, 0 QuantifiedInterpolants, 7867003 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2033 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 8028/8088 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown