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/Problem11_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:04:20,270 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:04:20,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:04:20,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:04:20,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:04:20,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:04:20,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:04:20,293 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:04:20,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:04:20,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:04:20,296 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:04:20,297 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:04:20,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:04:20,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:04:20,300 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:04:20,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:04:20,301 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:04:20,303 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:04:20,305 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:04:20,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:04:20,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:04:20,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:04:20,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:04:20,317 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:04:20,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:04:20,319 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:04:20,319 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:04:20,323 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:04:20,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:04:20,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:04:20,327 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:04:20,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:04:20,332 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 16:04:20,346 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:04:20,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:04:20,347 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:04:20,347 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:04:20,348 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:04:20,348 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:04:20,348 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:04:20,349 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:04:20,349 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:04:20,349 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:04:20,349 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:04:20,349 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:04:20,350 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:04:20,350 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:04:20,350 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:04:20,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:04:20,350 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:04:20,351 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:04:20,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:04:20,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:04:20,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:04:20,351 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:04:20,351 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:04:20,352 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:04:20,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:04:20,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:04:20,352 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:04:20,352 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:04:20,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:04:20,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:04:20,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:04:20,421 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:04:20,421 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:04:20,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-10-24 16:04:20,480 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e87b95d5/e63fccdcc1294cebaab0119c5586c850/FLAGbec081c85 [2018-10-24 16:04:21,031 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:04:21,033 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-10-24 16:04:21,050 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e87b95d5/e63fccdcc1294cebaab0119c5586c850/FLAGbec081c85 [2018-10-24 16:04:21,070 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e87b95d5/e63fccdcc1294cebaab0119c5586c850 [2018-10-24 16:04:21,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:04:21,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:04:21,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:04:21,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:04:21,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:04:21,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:04:21" (1/1) ... [2018-10-24 16:04:21,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1899e866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:21, skipping insertion in model container [2018-10-24 16:04:21,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:04:21" (1/1) ... [2018-10-24 16:04:21,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:04:21,184 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:04:21,954 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:04:21,960 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:04:22,167 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:04:22,189 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:04:22,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22 WrapperNode [2018-10-24 16:04:22,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:04:22,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:04:22,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:04:22,191 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:04:22,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:04:22,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:04:22,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:04:22,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:04:22,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (1/1) ... [2018-10-24 16:04:22,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:04:22,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:04:22,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:04:22,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:04:22,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (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 16:04:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:04:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:04:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:04:26,975 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:04:26,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:04:26 BoogieIcfgContainer [2018-10-24 16:04:26,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:04:26,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:04:26,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:04:26,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:04:26,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:04:21" (1/3) ... [2018-10-24 16:04:26,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a4837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:04:26, skipping insertion in model container [2018-10-24 16:04:26,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:22" (2/3) ... [2018-10-24 16:04:26,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a4837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:04:26, skipping insertion in model container [2018-10-24 16:04:26,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:04:26" (3/3) ... [2018-10-24 16:04:26,988 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22_true-unreach-call.c [2018-10-24 16:04:26,999 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:04:27,014 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:04:27,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:04:27,073 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:04:27,074 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:04:27,074 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:04:27,074 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:04:27,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:04:27,074 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:04:27,075 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:04:27,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:04:27,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:04:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:04:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 16:04:27,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:27,125 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:27,128 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:27,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-10-24 16:04:27,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:27,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:27,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:27,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:27,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:27,641 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 16:04:27,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:27,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:27,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:27,668 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:04:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:31,165 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-24 16:04:31,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:31,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-24 16:04:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:31,192 INFO L225 Difference]: With dead ends: 958 [2018-10-24 16:04:31,192 INFO L226 Difference]: Without dead ends: 667 [2018-10-24 16:04:31,198 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 16:04:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-24 16:04:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-24 16:04:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-24 16:04:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-24 16:04:31,299 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 56 [2018-10-24 16:04:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:31,300 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-24 16:04:31,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-24 16:04:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 16:04:31,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:31,306 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:04:31,306 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:31,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash 414757932, now seen corresponding path program 1 times [2018-10-24 16:04:31,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:31,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:31,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:31,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:31,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:31,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:31,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:31,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:31,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:31,661 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 4 states. [2018-10-24 16:04:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:37,238 INFO L93 Difference]: Finished difference Result 2463 states and 3710 transitions. [2018-10-24 16:04:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:37,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-24 16:04:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:37,251 INFO L225 Difference]: With dead ends: 2463 [2018-10-24 16:04:37,251 INFO L226 Difference]: Without dead ends: 1798 [2018-10-24 16:04:37,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2018-10-24 16:04:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1595. [2018-10-24 16:04:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2018-10-24 16:04:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2260 transitions. [2018-10-24 16:04:37,301 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2260 transitions. Word has length 126 [2018-10-24 16:04:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:37,302 INFO L481 AbstractCegarLoop]: Abstraction has 1595 states and 2260 transitions. [2018-10-24 16:04:37,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2260 transitions. [2018-10-24 16:04:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 16:04:37,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:37,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:37,313 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:37,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1862992232, now seen corresponding path program 1 times [2018-10-24 16:04:37,314 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:37,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:37,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:37,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:37,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:37,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:37,621 INFO L87 Difference]: Start difference. First operand 1595 states and 2260 transitions. Second operand 4 states. [2018-10-24 16:04:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:41,574 INFO L93 Difference]: Finished difference Result 6177 states and 8809 transitions. [2018-10-24 16:04:41,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:41,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 16:04:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:41,601 INFO L225 Difference]: With dead ends: 6177 [2018-10-24 16:04:41,601 INFO L226 Difference]: Without dead ends: 4584 [2018-10-24 16:04:41,605 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 16:04:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2018-10-24 16:04:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 4578. [2018-10-24 16:04:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4578 states. [2018-10-24 16:04:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 5909 transitions. [2018-10-24 16:04:41,695 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 5909 transitions. Word has length 139 [2018-10-24 16:04:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:41,696 INFO L481 AbstractCegarLoop]: Abstraction has 4578 states and 5909 transitions. [2018-10-24 16:04:41,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 5909 transitions. [2018-10-24 16:04:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 16:04:41,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:41,703 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:41,704 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:41,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1672306407, now seen corresponding path program 1 times [2018-10-24 16:04:41,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:41,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:41,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:41,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:41,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:42,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:42,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:42,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:04:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:04:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:42,180 INFO L87 Difference]: Start difference. First operand 4578 states and 5909 transitions. Second operand 5 states. [2018-10-24 16:04:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:49,707 INFO L93 Difference]: Finished difference Result 16425 states and 21952 transitions. [2018-10-24 16:04:49,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:04:49,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-24 16:04:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:49,761 INFO L225 Difference]: With dead ends: 16425 [2018-10-24 16:04:49,762 INFO L226 Difference]: Without dead ends: 11849 [2018-10-24 16:04:49,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2018-10-24 16:04:49,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 10331. [2018-10-24 16:04:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10331 states. [2018-10-24 16:04:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 13266 transitions. [2018-10-24 16:04:49,991 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 13266 transitions. Word has length 184 [2018-10-24 16:04:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:49,994 INFO L481 AbstractCegarLoop]: Abstraction has 10331 states and 13266 transitions. [2018-10-24 16:04:49,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:04:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 13266 transitions. [2018-10-24 16:04:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-24 16:04:50,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:50,011 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:04:50,011 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:50,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash 89924629, now seen corresponding path program 1 times [2018-10-24 16:04:50,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:50,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:50,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:50,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:50,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:50,454 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-24 16:04:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 16:04:50,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:50,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:50,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:50,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:50,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:50,514 INFO L87 Difference]: Start difference. First operand 10331 states and 13266 transitions. Second operand 4 states. [2018-10-24 16:04:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:52,889 INFO L93 Difference]: Finished difference Result 27150 states and 35049 transitions. [2018-10-24 16:04:52,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:52,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-10-24 16:04:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:52,949 INFO L225 Difference]: With dead ends: 27150 [2018-10-24 16:04:52,950 INFO L226 Difference]: Without dead ends: 13641 [2018-10-24 16:04:52,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2018-10-24 16:04:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 12517. [2018-10-24 16:04:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-24 16:04:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 15474 transitions. [2018-10-24 16:04:53,192 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 15474 transitions. Word has length 247 [2018-10-24 16:04:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:53,193 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 15474 transitions. [2018-10-24 16:04:53,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 15474 transitions. [2018-10-24 16:04:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-24 16:04:53,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:53,209 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:53,210 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:53,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1289748365, now seen corresponding path program 1 times [2018-10-24 16:04:53,210 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:53,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:53,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:53,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:53,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 16:04:53,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:53,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:53,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:53,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:53,541 INFO L87 Difference]: Start difference. First operand 12517 states and 15474 transitions. Second operand 4 states. [2018-10-24 16:04:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:56,285 INFO L93 Difference]: Finished difference Result 31529 states and 39132 transitions. [2018-10-24 16:04:56,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:56,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2018-10-24 16:04:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:56,328 INFO L225 Difference]: With dead ends: 31529 [2018-10-24 16:04:56,329 INFO L226 Difference]: Without dead ends: 19199 [2018-10-24 16:04:56,345 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 16:04:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2018-10-24 16:04:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 18806. [2018-10-24 16:04:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18806 states. [2018-10-24 16:04:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18806 states to 18806 states and 22391 transitions. [2018-10-24 16:04:56,624 INFO L78 Accepts]: Start accepts. Automaton has 18806 states and 22391 transitions. Word has length 298 [2018-10-24 16:04:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:56,624 INFO L481 AbstractCegarLoop]: Abstraction has 18806 states and 22391 transitions. [2018-10-24 16:04:56,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18806 states and 22391 transitions. [2018-10-24 16:04:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-24 16:04:56,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:56,644 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:04:56,644 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:56,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash -434510474, now seen corresponding path program 1 times [2018-10-24 16:04:56,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:56,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:56,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:56,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:56,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:57,015 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:04:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:04:57,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:04:57,096 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 16:04:57,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:57,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:04:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 16:04:57,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:04:57,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-24 16:04:57,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:57,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:57,426 INFO L87 Difference]: Start difference. First operand 18806 states and 22391 transitions. Second operand 4 states. [2018-10-24 16:05:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:00,748 INFO L93 Difference]: Finished difference Result 39292 states and 47011 transitions. [2018-10-24 16:05:00,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:00,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-10-24 16:05:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:00,793 INFO L225 Difference]: With dead ends: 39292 [2018-10-24 16:05:00,793 INFO L226 Difference]: Without dead ends: 22528 [2018-10-24 16:05:00,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 305 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 16:05:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22528 states. [2018-10-24 16:05:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22528 to 19170. [2018-10-24 16:05:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19170 states. [2018-10-24 16:05:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 22445 transitions. [2018-10-24 16:05:01,333 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 22445 transitions. Word has length 304 [2018-10-24 16:05:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:01,333 INFO L481 AbstractCegarLoop]: Abstraction has 19170 states and 22445 transitions. [2018-10-24 16:05:01,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 22445 transitions. [2018-10-24 16:05:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-24 16:05:01,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:01,365 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:01,365 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:01,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:01,365 INFO L82 PathProgramCache]: Analyzing trace with hash -463266020, now seen corresponding path program 1 times [2018-10-24 16:05:01,366 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:01,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:01,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:01,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:01,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:02,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:02,076 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 16:05:02,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:02,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:02,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:02,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-24 16:05:02,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:05:02,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:05:02,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:02,566 INFO L87 Difference]: Start difference. First operand 19170 states and 22445 transitions. Second operand 5 states. [2018-10-24 16:05:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:06,512 INFO L93 Difference]: Finished difference Result 45027 states and 52908 transitions. [2018-10-24 16:05:06,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:05:06,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2018-10-24 16:05:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:06,540 INFO L225 Difference]: With dead ends: 45027 [2018-10-24 16:05:06,540 INFO L226 Difference]: Without dead ends: 27899 [2018-10-24 16:05:06,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:05:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27899 states. [2018-10-24 16:05:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27899 to 19910. [2018-10-24 16:05:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19910 states. [2018-10-24 16:05:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19910 states to 19910 states and 23330 transitions. [2018-10-24 16:05:06,879 INFO L78 Accepts]: Start accepts. Automaton has 19910 states and 23330 transitions. Word has length 360 [2018-10-24 16:05:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:06,880 INFO L481 AbstractCegarLoop]: Abstraction has 19910 states and 23330 transitions. [2018-10-24 16:05:06,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 19910 states and 23330 transitions. [2018-10-24 16:05:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-24 16:05:06,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:06,928 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:06,928 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:06,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash 346379941, now seen corresponding path program 1 times [2018-10-24 16:05:06,929 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:06,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:06,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:06,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:06,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-24 16:05:07,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:07,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:05:07,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:05:07,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:05:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:05:07,752 INFO L87 Difference]: Start difference. First operand 19910 states and 23330 transitions. Second operand 3 states. [2018-10-24 16:05:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:09,507 INFO L93 Difference]: Finished difference Result 37963 states and 44540 transitions. [2018-10-24 16:05:09,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:05:09,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-10-24 16:05:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:09,526 INFO L225 Difference]: With dead ends: 37963 [2018-10-24 16:05:09,527 INFO L226 Difference]: Without dead ends: 19539 [2018-10-24 16:05:09,539 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 16:05:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19539 states. [2018-10-24 16:05:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19539 to 19539. [2018-10-24 16:05:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19539 states. [2018-10-24 16:05:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19539 states to 19539 states and 22547 transitions. [2018-10-24 16:05:09,763 INFO L78 Accepts]: Start accepts. Automaton has 19539 states and 22547 transitions. Word has length 426 [2018-10-24 16:05:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:09,764 INFO L481 AbstractCegarLoop]: Abstraction has 19539 states and 22547 transitions. [2018-10-24 16:05:09,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:05:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 19539 states and 22547 transitions. [2018-10-24 16:05:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-24 16:05:09,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:09,816 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:09,817 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:09,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:09,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1151368560, now seen corresponding path program 1 times [2018-10-24 16:05:09,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:09,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:09,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:09,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:09,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:10,213 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:05:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-10-24 16:05:10,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:10,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:10,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:10,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:10,360 INFO L87 Difference]: Start difference. First operand 19539 states and 22547 transitions. Second operand 4 states. [2018-10-24 16:05:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:12,644 INFO L93 Difference]: Finished difference Result 39644 states and 45778 transitions. [2018-10-24 16:05:12,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:12,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 611 [2018-10-24 16:05:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:12,666 INFO L225 Difference]: With dead ends: 39644 [2018-10-24 16:05:12,666 INFO L226 Difference]: Without dead ends: 20477 [2018-10-24 16:05:12,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:05:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20477 states. [2018-10-24 16:05:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20477 to 19723. [2018-10-24 16:05:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19723 states. [2018-10-24 16:05:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19723 states to 19723 states and 22122 transitions. [2018-10-24 16:05:12,919 INFO L78 Accepts]: Start accepts. Automaton has 19723 states and 22122 transitions. Word has length 611 [2018-10-24 16:05:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:12,920 INFO L481 AbstractCegarLoop]: Abstraction has 19723 states and 22122 transitions. [2018-10-24 16:05:12,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19723 states and 22122 transitions. [2018-10-24 16:05:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-10-24 16:05:12,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:12,967 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 16:05:12,968 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:12,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:12,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1317709288, now seen corresponding path program 1 times [2018-10-24 16:05:12,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:12,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:12,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:12,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:12,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2018-10-24 16:05:13,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:13,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:13,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:05:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:05:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:13,912 INFO L87 Difference]: Start difference. First operand 19723 states and 22122 transitions. Second operand 5 states. [2018-10-24 16:05:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:16,298 INFO L93 Difference]: Finished difference Result 46113 states and 51776 transitions. [2018-10-24 16:05:16,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:05:16,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 754 [2018-10-24 16:05:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:16,324 INFO L225 Difference]: With dead ends: 46113 [2018-10-24 16:05:16,325 INFO L226 Difference]: Without dead ends: 26762 [2018-10-24 16:05:16,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26762 states. [2018-10-24 16:05:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26762 to 26204. [2018-10-24 16:05:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26204 states. [2018-10-24 16:05:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26204 states to 26204 states and 28557 transitions. [2018-10-24 16:05:16,948 INFO L78 Accepts]: Start accepts. Automaton has 26204 states and 28557 transitions. Word has length 754 [2018-10-24 16:05:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:16,948 INFO L481 AbstractCegarLoop]: Abstraction has 26204 states and 28557 transitions. [2018-10-24 16:05:16,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 26204 states and 28557 transitions. [2018-10-24 16:05:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2018-10-24 16:05:16,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:16,973 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-24 16:05:16,973 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:16,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -246020562, now seen corresponding path program 1 times [2018-10-24 16:05:16,974 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:16,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:16,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:16,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:16,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:17,477 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 16:05:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1102 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-10-24 16:05:17,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:17,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:17,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:17,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:17,835 INFO L87 Difference]: Start difference. First operand 26204 states and 28557 transitions. Second operand 4 states. [2018-10-24 16:05:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:19,605 INFO L93 Difference]: Finished difference Result 50935 states and 55546 transitions. [2018-10-24 16:05:19,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:19,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 828 [2018-10-24 16:05:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:19,637 INFO L225 Difference]: With dead ends: 50935 [2018-10-24 16:05:19,638 INFO L226 Difference]: Without dead ends: 26774 [2018-10-24 16:05:19,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:05:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-10-24 16:05:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 25834. [2018-10-24 16:05:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25834 states. [2018-10-24 16:05:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 28118 transitions. [2018-10-24 16:05:19,977 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 28118 transitions. Word has length 828 [2018-10-24 16:05:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:19,977 INFO L481 AbstractCegarLoop]: Abstraction has 25834 states and 28118 transitions. [2018-10-24 16:05:19,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 28118 transitions. [2018-10-24 16:05:20,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-10-24 16:05:20,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:20,010 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, 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, 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, 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, 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] [2018-10-24 16:05:20,010 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:20,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash 39384976, now seen corresponding path program 1 times [2018-10-24 16:05:20,011 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:20,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:20,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:20,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:20,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1128 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-10-24 16:05:21,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:21,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:05:21,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:21,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:21,317 INFO L87 Difference]: Start difference. First operand 25834 states and 28118 transitions. Second operand 4 states. [2018-10-24 16:05:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:22,781 INFO L93 Difference]: Finished difference Result 50188 states and 54656 transitions. [2018-10-24 16:05:22,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:22,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 844 [2018-10-24 16:05:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:22,804 INFO L225 Difference]: With dead ends: 50188 [2018-10-24 16:05:22,804 INFO L226 Difference]: Without dead ends: 26211 [2018-10-24 16:05:22,818 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 16:05:22,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26211 states. [2018-10-24 16:05:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26211 to 25278. [2018-10-24 16:05:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25278 states. [2018-10-24 16:05:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25278 states to 25278 states and 27477 transitions. [2018-10-24 16:05:23,029 INFO L78 Accepts]: Start accepts. Automaton has 25278 states and 27477 transitions. Word has length 844 [2018-10-24 16:05:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:23,029 INFO L481 AbstractCegarLoop]: Abstraction has 25278 states and 27477 transitions. [2018-10-24 16:05:23,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 25278 states and 27477 transitions. [2018-10-24 16:05:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-10-24 16:05:23,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:23,053 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 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] [2018-10-24 16:05:23,054 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:23,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1654802679, now seen corresponding path program 1 times [2018-10-24 16:05:23,054 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:23,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:23,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:23,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:23,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:23,644 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:05:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1718 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2018-10-24 16:05:24,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:24,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:24,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:24,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:24,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:24,336 INFO L87 Difference]: Start difference. First operand 25278 states and 27477 transitions. Second operand 4 states. [2018-10-24 16:05:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:26,679 INFO L93 Difference]: Finished difference Result 49268 states and 53596 transitions. [2018-10-24 16:05:26,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:26,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 888 [2018-10-24 16:05:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:26,700 INFO L225 Difference]: With dead ends: 49268 [2018-10-24 16:05:26,700 INFO L226 Difference]: Without dead ends: 24177 [2018-10-24 16:05:26,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24177 states. [2018-10-24 16:05:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24177 to 21564. [2018-10-24 16:05:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21564 states. [2018-10-24 16:05:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21564 states to 21564 states and 23182 transitions. [2018-10-24 16:05:26,889 INFO L78 Accepts]: Start accepts. Automaton has 21564 states and 23182 transitions. Word has length 888 [2018-10-24 16:05:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:26,890 INFO L481 AbstractCegarLoop]: Abstraction has 21564 states and 23182 transitions. [2018-10-24 16:05:26,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21564 states and 23182 transitions. [2018-10-24 16:05:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-10-24 16:05:26,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:26,906 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 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 16:05:26,907 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:26,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:26,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1276705020, now seen corresponding path program 1 times [2018-10-24 16:05:26,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:26,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:26,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:26,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:26,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:27,515 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:05:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-10-24 16:05:27,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:27,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:27,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:27,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:27,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:27,841 INFO L87 Difference]: Start difference. First operand 21564 states and 23182 transitions. Second operand 4 states. [2018-10-24 16:05:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:29,842 INFO L93 Difference]: Finished difference Result 43325 states and 46568 transitions. [2018-10-24 16:05:29,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:29,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-10-24 16:05:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:29,863 INFO L225 Difference]: With dead ends: 43325 [2018-10-24 16:05:29,863 INFO L226 Difference]: Without dead ends: 22874 [2018-10-24 16:05:29,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22874 states. [2018-10-24 16:05:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22874 to 21193. [2018-10-24 16:05:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21193 states. [2018-10-24 16:05:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21193 states to 21193 states and 22712 transitions. [2018-10-24 16:05:30,043 INFO L78 Accepts]: Start accepts. Automaton has 21193 states and 22712 transitions. Word has length 904 [2018-10-24 16:05:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:30,044 INFO L481 AbstractCegarLoop]: Abstraction has 21193 states and 22712 transitions. [2018-10-24 16:05:30,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 21193 states and 22712 transitions. [2018-10-24 16:05:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-24 16:05:30,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:30,062 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:30,062 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:30,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:30,062 INFO L82 PathProgramCache]: Analyzing trace with hash 740592222, now seen corresponding path program 1 times [2018-10-24 16:05:30,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:30,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:30,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:30,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:30,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1433 proven. 220 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-10-24 16:05:31,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:31,169 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 16:05:31,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:31,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:38,072 WARN L179 SmtUtils]: Spent 6.34 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-24 16:05:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1639 proven. 600 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-24 16:05:41,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:41,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-24 16:05:41,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:05:41,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:05:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:05:41,022 INFO L87 Difference]: Start difference. First operand 21193 states and 22712 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 16:08:40,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:08:40,305 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:08:40,311 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:08:40,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:08:40 BoogieIcfgContainer [2018-10-24 16:08:40,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:08:40,312 INFO L168 Benchmark]: Toolchain (without parser) took 259227.48 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 240.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:40,313 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:08:40,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1102.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:40,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 308.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:40,316 INFO L168 Benchmark]: Boogie Preprocessor took 129.26 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:08:40,316 INFO L168 Benchmark]: RCFGBuilder took 4348.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:40,317 INFO L168 Benchmark]: TraceAbstraction took 253333.31 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:40,322 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1102.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 308.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.26 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4348.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253333.31 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (21193states) and FLOYD_HOARE automaton (currently 3 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (135 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 253.2s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 226.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3267 SDtfs, 6102 SDslu, 1526 SDs, 0 SdLazy, 17409 SolverSat, 3816 SolverUnsat, 88 SolverUnknown, 0 SolverNotchecked, 216.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1653 GetRequests, 1609 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26204occurred in iteration=11, 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: 3.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 22070 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 9495 NumberOfCodeBlocks, 9495 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9476 ConstructedInterpolants, 215 QuantifiedInterpolants, 21932119 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2031 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 17593/18668 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown