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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:23:51,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:23:51,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:23:51,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:23:51,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:23:51,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:23:51,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:23:51,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:23:51,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:23:51,858 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:23:51,861 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:23:51,861 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:23:51,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:23:51,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:23:51,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:23:51,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:23:51,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:23:51,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:23:51,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:23:51,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:23:51,880 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:23:51,881 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:23:51,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:23:51,906 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 [2018-10-26 21:23:51,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:23:51,935 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:23:51,936 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:23:51,936 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:23:51,937 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:23:51,937 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:23:51,937 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:23:51,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:23:51,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:23:51,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:23:51,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:23:51,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:23:51,938 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:23:51,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:23:51,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:23:51,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:23:51,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:23:51,939 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:23:51,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:23:51,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:23:51,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:23:51,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:23:51,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:23:51,941 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:23:51,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:23:51,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:23:51,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:23:51,942 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:23:52,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:23:52,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:23:52,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:23:52,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:23:52,037 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:23:52,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-26 21:23:52,107 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8533833/2daa1a34a45a44589db13a60ce794e48/FLAGddef8c554 [2018-10-26 21:23:52,907 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:23:52,908 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-26 21:23:52,943 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8533833/2daa1a34a45a44589db13a60ce794e48/FLAGddef8c554 [2018-10-26 21:23:52,963 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8533833/2daa1a34a45a44589db13a60ce794e48 [2018-10-26 21:23:52,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:23:52,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:23:52,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:23:52,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:23:52,983 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:23:52,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:23:52" (1/1) ... [2018-10-26 21:23:52,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0c9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:52, skipping insertion in model container [2018-10-26 21:23:52,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:23:52" (1/1) ... [2018-10-26 21:23:52,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:23:53,194 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:23:54,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:23:54,807 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:23:55,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:23:55,575 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:23:55,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55 WrapperNode [2018-10-26 21:23:55,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:23:55,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:23:55,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:23:55,579 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:23:55,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:55,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:23:56,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:23:56,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:23:56,359 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:23:56,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... [2018-10-26 21:23:56,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:23:56,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:23:56,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:23:56,974 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:23:56,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:23:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:23:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:23:57,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:24:10,106 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:24:10,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:10 BoogieIcfgContainer [2018-10-26 21:24:10,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:24:10,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:24:10,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:24:10,111 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:24:10,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:23:52" (1/3) ... [2018-10-26 21:24:10,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a41e4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:10, skipping insertion in model container [2018-10-26 21:24:10,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:23:55" (2/3) ... [2018-10-26 21:24:10,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a41e4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:10, skipping insertion in model container [2018-10-26 21:24:10,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:10" (3/3) ... [2018-10-26 21:24:10,116 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-10-26 21:24:10,127 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:24:10,137 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:24:10,155 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:24:10,201 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:24:10,202 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:24:10,202 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:24:10,202 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:24:10,202 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:24:10,202 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:24:10,202 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:24:10,203 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:24:10,203 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:24:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:24:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-26 21:24:10,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:10,250 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] [2018-10-26 21:24:10,253 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:10,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-10-26 21:24:10,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:10,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:10,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:10,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:10,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:11,023 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:24:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:11,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:24:11,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:24:11,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:24:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:24:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:24:11,376 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-26 21:24:11,676 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 21:24:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:24:32,016 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-26 21:24:32,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:24:32,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-10-26 21:24:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:24:32,067 INFO L225 Difference]: With dead ends: 4624 [2018-10-26 21:24:32,068 INFO L226 Difference]: Without dead ends: 3515 [2018-10-26 21:24:32,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:24:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-26 21:24:32,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-26 21:24:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-26 21:24:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-26 21:24:32,271 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 43 [2018-10-26 21:24:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:24:32,272 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-26 21:24:32,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:24:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-26 21:24:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-26 21:24:32,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:32,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:24:32,281 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:32,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:32,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1600132786, now seen corresponding path program 1 times [2018-10-26 21:24:32,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:32,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:32,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:32,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:32,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-26 21:24:32,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:24:32,692 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 [2018-10-26 21:24:32,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:32,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:24:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-26 21:24:33,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:24:33,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 21:24:33,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:24:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:24:33,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:24:33,018 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-26 21:24:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:24:49,509 INFO L93 Difference]: Finished difference Result 9440 states and 15276 transitions. [2018-10-26 21:24:49,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:24:49,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-26 21:24:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:24:49,546 INFO L225 Difference]: With dead ends: 9440 [2018-10-26 21:24:49,546 INFO L226 Difference]: Without dead ends: 6716 [2018-10-26 21:24:49,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:24:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-10-26 21:24:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6695. [2018-10-26 21:24:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6695 states. [2018-10-26 21:24:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 9408 transitions. [2018-10-26 21:24:49,683 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 9408 transitions. Word has length 169 [2018-10-26 21:24:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:24:49,684 INFO L481 AbstractCegarLoop]: Abstraction has 6695 states and 9408 transitions. [2018-10-26 21:24:49,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:24:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 9408 transitions. [2018-10-26 21:24:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-26 21:24:49,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:49,692 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:24:49,692 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:49,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1540137407, now seen corresponding path program 1 times [2018-10-26 21:24:49,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:49,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:49,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:49,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:49,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-26 21:24:49,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:24:49,983 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 [2018-10-26 21:24:49,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:50,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:24:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:50,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:24:50,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:24:50,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:24:50,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:24:50,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:24:50,122 INFO L87 Difference]: Start difference. First operand 6695 states and 9408 transitions. Second operand 4 states. [2018-10-26 21:25:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:00,361 INFO L93 Difference]: Finished difference Result 22896 states and 33428 transitions. [2018-10-26 21:25:00,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:00,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-10-26 21:25:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:00,439 INFO L225 Difference]: With dead ends: 22896 [2018-10-26 21:25:00,439 INFO L226 Difference]: Without dead ends: 16991 [2018-10-26 21:25:00,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16991 states. [2018-10-26 21:25:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16991 to 11431. [2018-10-26 21:25:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11431 states. [2018-10-26 21:25:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 15331 transitions. [2018-10-26 21:25:00,713 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 15331 transitions. Word has length 212 [2018-10-26 21:25:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:00,714 INFO L481 AbstractCegarLoop]: Abstraction has 11431 states and 15331 transitions. [2018-10-26 21:25:00,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 15331 transitions. [2018-10-26 21:25:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-26 21:25:00,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:00,725 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:00,725 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:00,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:00,725 INFO L82 PathProgramCache]: Analyzing trace with hash 712625866, now seen corresponding path program 1 times [2018-10-26 21:25:00,726 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:00,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:00,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:00,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:00,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-26 21:25:01,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:01,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:25:01,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:25:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:25:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:01,108 INFO L87 Difference]: Start difference. First operand 11431 states and 15331 transitions. Second operand 5 states. [2018-10-26 21:25:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:24,778 INFO L93 Difference]: Finished difference Result 51522 states and 70769 transitions. [2018-10-26 21:25:24,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:25:24,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-10-26 21:25:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:24,861 INFO L225 Difference]: With dead ends: 51522 [2018-10-26 21:25:24,862 INFO L226 Difference]: Without dead ends: 40881 [2018-10-26 21:25:24,883 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 [2018-10-26 21:25:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40881 states. [2018-10-26 21:25:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40881 to 40725. [2018-10-26 21:25:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40725 states. [2018-10-26 21:25:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40725 states to 40725 states and 52746 transitions. [2018-10-26 21:25:26,084 INFO L78 Accepts]: Start accepts. Automaton has 40725 states and 52746 transitions. Word has length 286 [2018-10-26 21:25:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:26,084 INFO L481 AbstractCegarLoop]: Abstraction has 40725 states and 52746 transitions. [2018-10-26 21:25:26,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:25:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 40725 states and 52746 transitions. [2018-10-26 21:25:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-26 21:25:26,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:26,095 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:26,095 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:26,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1604350725, now seen corresponding path program 1 times [2018-10-26 21:25:26,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:26,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:26,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:26,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:26,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 224 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-26 21:25:26,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:25:26,479 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 [2018-10-26 21:25:26,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:26,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:25:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-26 21:25:26,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:25:26,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:25:26,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:26,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:26,648 INFO L87 Difference]: Start difference. First operand 40725 states and 52746 transitions. Second operand 4 states. [2018-10-26 21:25:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:36,833 INFO L93 Difference]: Finished difference Result 139822 states and 180800 transitions. [2018-10-26 21:25:36,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:36,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-10-26 21:25:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:36,962 INFO L225 Difference]: With dead ends: 139822 [2018-10-26 21:25:36,962 INFO L226 Difference]: Without dead ends: 99887 [2018-10-26 21:25:37,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2018-10-26 21:25:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 73820. [2018-10-26 21:25:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73820 states. [2018-10-26 21:25:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73820 states to 73820 states and 92292 transitions. [2018-10-26 21:25:38,418 INFO L78 Accepts]: Start accepts. Automaton has 73820 states and 92292 transitions. Word has length 287 [2018-10-26 21:25:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:38,418 INFO L481 AbstractCegarLoop]: Abstraction has 73820 states and 92292 transitions. [2018-10-26 21:25:38,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 73820 states and 92292 transitions. [2018-10-26 21:25:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-26 21:25:38,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:38,441 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:25:38,441 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:38,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:38,441 INFO L82 PathProgramCache]: Analyzing trace with hash 188507124, now seen corresponding path program 1 times [2018-10-26 21:25:38,442 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:38,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:38,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:38,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:38,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 21:25:38,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:38,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:38,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:38,970 INFO L87 Difference]: Start difference. First operand 73820 states and 92292 transitions. Second operand 4 states. [2018-10-26 21:25:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:50,249 INFO L93 Difference]: Finished difference Result 208303 states and 262305 transitions. [2018-10-26 21:25:50,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:50,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-10-26 21:25:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:50,479 INFO L225 Difference]: With dead ends: 208303 [2018-10-26 21:25:50,479 INFO L226 Difference]: Without dead ends: 135273 [2018-10-26 21:25:50,532 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 [2018-10-26 21:25:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135273 states. [2018-10-26 21:25:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135273 to 134482. [2018-10-26 21:25:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134482 states. [2018-10-26 21:25:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134482 states to 134482 states and 159448 transitions. [2018-10-26 21:25:51,631 INFO L78 Accepts]: Start accepts. Automaton has 134482 states and 159448 transitions. Word has length 379 [2018-10-26 21:25:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 134482 states and 159448 transitions. [2018-10-26 21:25:51,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 134482 states and 159448 transitions. [2018-10-26 21:25:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-10-26 21:25:51,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:51,693 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:51,694 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:51,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash 236957667, now seen corresponding path program 1 times [2018-10-26 21:25:51,694 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:51,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:51,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:51,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:51,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-26 21:25:52,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:52,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:25:52,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:52,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:52,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:52,060 INFO L87 Difference]: Start difference. First operand 134482 states and 159448 transitions. Second operand 4 states. [2018-10-26 21:26:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:03,769 INFO L93 Difference]: Finished difference Result 303676 states and 360846 transitions. [2018-10-26 21:26:03,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:03,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 550 [2018-10-26 21:26:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:03,998 INFO L225 Difference]: With dead ends: 303676 [2018-10-26 21:26:03,998 INFO L226 Difference]: Without dead ends: 169984 [2018-10-26 21:26:04,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169984 states. [2018-10-26 21:26:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169984 to 166788. [2018-10-26 21:26:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166788 states. [2018-10-26 21:26:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166788 states to 166788 states and 190083 transitions. [2018-10-26 21:26:06,480 INFO L78 Accepts]: Start accepts. Automaton has 166788 states and 190083 transitions. Word has length 550 [2018-10-26 21:26:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:06,480 INFO L481 AbstractCegarLoop]: Abstraction has 166788 states and 190083 transitions. [2018-10-26 21:26:06,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 166788 states and 190083 transitions. [2018-10-26 21:26:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-10-26 21:26:06,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:06,522 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:06,522 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:06,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1147200999, now seen corresponding path program 1 times [2018-10-26 21:26:06,523 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:06,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:06,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:06,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:06,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 16 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-26 21:26:07,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:26:07,555 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 [2018-10-26 21:26:07,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:07,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:26:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-10-26 21:26:08,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:26:08,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:26:08,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:26:08,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:26:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:08,263 INFO L87 Difference]: Start difference. First operand 166788 states and 190083 transitions. Second operand 5 states. [2018-10-26 21:26:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:21,272 INFO L93 Difference]: Finished difference Result 331224 states and 377691 transitions. [2018-10-26 21:26:21,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:26:21,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 614 [2018-10-26 21:26:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:21,485 INFO L225 Difference]: With dead ends: 331224 [2018-10-26 21:26:21,485 INFO L226 Difference]: Without dead ends: 165226 [2018-10-26 21:26:21,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165226 states. [2018-10-26 21:26:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165226 to 165182. [2018-10-26 21:26:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165182 states. [2018-10-26 21:26:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165182 states to 165182 states and 179180 transitions. [2018-10-26 21:26:24,348 INFO L78 Accepts]: Start accepts. Automaton has 165182 states and 179180 transitions. Word has length 614 [2018-10-26 21:26:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:24,349 INFO L481 AbstractCegarLoop]: Abstraction has 165182 states and 179180 transitions. [2018-10-26 21:26:24,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:26:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 165182 states and 179180 transitions. [2018-10-26 21:26:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-26 21:26:24,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:24,379 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:24,379 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:24,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:24,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1694945770, now seen corresponding path program 1 times [2018-10-26 21:26:24,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:24,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:24,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:24,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:24,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-26 21:26:25,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:25,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:25,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:26:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:26:25,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:25,116 INFO L87 Difference]: Start difference. First operand 165182 states and 179180 transitions. Second operand 3 states. [2018-10-26 21:26:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:33,172 INFO L93 Difference]: Finished difference Result 323262 states and 350705 transitions. [2018-10-26 21:26:33,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:26:33,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 640 [2018-10-26 21:26:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:33,414 INFO L225 Difference]: With dead ends: 323262 [2018-10-26 21:26:33,415 INFO L226 Difference]: Without dead ends: 158870 [2018-10-26 21:26:33,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158870 states. [2018-10-26 21:26:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158870 to 156505. [2018-10-26 21:26:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156505 states. [2018-10-26 21:26:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156505 states to 156505 states and 165898 transitions. [2018-10-26 21:26:36,798 INFO L78 Accepts]: Start accepts. Automaton has 156505 states and 165898 transitions. Word has length 640 [2018-10-26 21:26:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:36,799 INFO L481 AbstractCegarLoop]: Abstraction has 156505 states and 165898 transitions. [2018-10-26 21:26:36,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:26:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 156505 states and 165898 transitions. [2018-10-26 21:26:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-26 21:26:36,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:36,842 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:26:36,842 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:36,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:36,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1049185512, now seen corresponding path program 1 times [2018-10-26 21:26:36,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:36,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:36,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:36,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:36,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-10-26 21:26:41,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:41,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:41,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:26:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:26:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:41,959 INFO L87 Difference]: Start difference. First operand 156505 states and 165898 transitions. Second operand 3 states. [2018-10-26 21:26:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:49,586 INFO L93 Difference]: Finished difference Result 310614 states and 329192 transitions. [2018-10-26 21:26:49,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:26:49,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 678 [2018-10-26 21:26:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:49,780 INFO L225 Difference]: With dead ends: 310614 [2018-10-26 21:26:49,780 INFO L226 Difference]: Without dead ends: 147779 [2018-10-26 21:26:49,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147779 states. [2018-10-26 21:26:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147779 to 145411. [2018-10-26 21:26:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145411 states. [2018-10-26 21:26:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145411 states to 145411 states and 151459 transitions. [2018-10-26 21:26:51,723 INFO L78 Accepts]: Start accepts. Automaton has 145411 states and 151459 transitions. Word has length 678 [2018-10-26 21:26:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:51,724 INFO L481 AbstractCegarLoop]: Abstraction has 145411 states and 151459 transitions. [2018-10-26 21:26:51,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:26:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 145411 states and 151459 transitions. [2018-10-26 21:26:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-10-26 21:26:51,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:51,757 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:26:51,757 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:51,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash 699491750, now seen corresponding path program 1 times [2018-10-26 21:26:51,758 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:51,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:51,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:51,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:51,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-10-26 21:26:52,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:52,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:26:52,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:52,563 INFO L87 Difference]: Start difference. First operand 145411 states and 151459 transitions. Second operand 4 states. [2018-10-26 21:27:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:03,457 INFO L93 Difference]: Finished difference Result 320776 states and 334610 transitions. [2018-10-26 21:27:03,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:03,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 729 [2018-10-26 21:27:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:03,672 INFO L225 Difference]: With dead ends: 320776 [2018-10-26 21:27:03,672 INFO L226 Difference]: Without dead ends: 176155 [2018-10-26 21:27:03,726 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 [2018-10-26 21:27:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176155 states. [2018-10-26 21:27:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176155 to 175352. [2018-10-26 21:27:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175352 states. [2018-10-26 21:27:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175352 states to 175352 states and 182194 transitions. [2018-10-26 21:27:06,183 INFO L78 Accepts]: Start accepts. Automaton has 175352 states and 182194 transitions. Word has length 729 [2018-10-26 21:27:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:06,183 INFO L481 AbstractCegarLoop]: Abstraction has 175352 states and 182194 transitions. [2018-10-26 21:27:06,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 175352 states and 182194 transitions. [2018-10-26 21:27:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-26 21:27:06,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:06,232 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:06,232 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:06,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash -738906392, now seen corresponding path program 1 times [2018-10-26 21:27:06,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:06,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:06,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:06,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:06,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-10-26 21:27:06,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:06,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:27:06,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:27:06,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:27:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:27:06,973 INFO L87 Difference]: Start difference. First operand 175352 states and 182194 transitions. Second operand 5 states. [2018-10-26 21:27:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:30,339 INFO L93 Difference]: Finished difference Result 430463 states and 447523 transitions. [2018-10-26 21:27:30,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:27:30,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 788 [2018-10-26 21:27:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:30,658 INFO L225 Difference]: With dead ends: 430463 [2018-10-26 21:27:30,658 INFO L226 Difference]: Without dead ends: 254319 [2018-10-26 21:27:30,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:27:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254319 states. [2018-10-26 21:27:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254319 to 238419. [2018-10-26 21:27:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238419 states. [2018-10-26 21:27:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238419 states to 238419 states and 246773 transitions. [2018-10-26 21:27:33,689 INFO L78 Accepts]: Start accepts. Automaton has 238419 states and 246773 transitions. Word has length 788 [2018-10-26 21:27:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:33,690 INFO L481 AbstractCegarLoop]: Abstraction has 238419 states and 246773 transitions. [2018-10-26 21:27:33,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:27:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 238419 states and 246773 transitions. [2018-10-26 21:27:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2018-10-26 21:27:33,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:33,788 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:33,789 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:33,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash -554310712, now seen corresponding path program 1 times [2018-10-26 21:27:33,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:33,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:33,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:33,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:33,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 680 proven. 436 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-10-26 21:27:36,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:36,746 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:27:36,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:37,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-26 21:27:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-10-26 21:27:38,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:38,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:27:38,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:27:38,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:27:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:27:38,671 INFO L87 Difference]: Start difference. First operand 238419 states and 246773 transitions. Second operand 8 states. [2018-10-26 21:27:38,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:27:38,672 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:27:38,679 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:27:38,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:27:38 BoogieIcfgContainer [2018-10-26 21:27:38,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:27:38,680 INFO L168 Benchmark]: Toolchain (without parser) took 225704.56 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 96.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,682 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:27:38,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2599.40 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 780.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 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 73.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,684 INFO L168 Benchmark]: Boogie Preprocessor took 614.39 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: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,685 INFO L168 Benchmark]: RCFGBuilder took 13133.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 595.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,686 INFO L168 Benchmark]: TraceAbstraction took 208571.57 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 777.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-26 21:27:38,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2599.40 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 780.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 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 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 614.39 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: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13133.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 595.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208571.57 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 777.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (238419states) and FLOYD_HOARE automaton (currently 2 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 170.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10557 SDtfs, 27727 SDslu, 3358 SDs, 0 SdLazy, 63669 SolverSat, 17473 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 138.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2451 GetRequests, 2409 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238419occurred in iteration=12, 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: 19.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 57272 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 8889 NumberOfCodeBlocks, 8889 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8871 ConstructedInterpolants, 90 QuantifiedInterpolants, 11735341 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3069 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 9263/9726 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown