java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:04:57,254 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:04:57,256 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:04:57,273 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:04:57,273 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:04:57,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:04:57,278 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:04:57,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:04:57,283 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:04:57,284 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:04:57,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:04:57,285 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:04:57,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:04:57,287 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:04:57,288 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:04:57,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:04:57,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:04:57,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:04:57,294 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:04:57,296 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:04:57,297 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:04:57,298 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:04:57,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 11:04:57,301 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 11:04:57,301 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 11:04:57,302 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 11:04:57,303 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 11:04:57,304 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 11:04:57,305 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 11:04:57,306 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 11:04:57,307 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 11:04:57,307 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 11:04:57,308 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:04:57,308 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:04:57,309 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:04:57,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:04:57,310 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 11:04:57,326 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:04:57,327 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:04:57,328 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:04:57,329 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:04:57,329 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:04:57,329 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:04:57,329 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:04:57,330 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:04:57,330 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:04:57,330 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:04:57,331 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:04:57,331 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:04:57,332 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:04:57,332 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:04:57,332 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:04:57,332 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:04:57,332 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:04:57,334 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:04:57,335 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:04:57,335 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:04:57,335 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:04:57,335 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:04:57,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:04:57,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:04:57,336 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:04:57,336 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:04:57,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:04:57,337 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:04:57,337 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:04:57,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:04:57,337 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:04:57,338 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:04:57,338 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:04:57,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:04:57,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:04:57,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:04:57,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:04:57,432 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:04:57,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-08-07 11:04:57,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6552ce16b/b62be3a7182d45bab8abfc624b581153/FLAG85f81b49c [2018-08-07 11:04:58,205 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:04:58,206 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-08-07 11:04:58,243 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6552ce16b/b62be3a7182d45bab8abfc624b581153/FLAG85f81b49c [2018-08-07 11:04:58,267 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6552ce16b/b62be3a7182d45bab8abfc624b581153 [2018-08-07 11:04:58,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:04:58,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:04:58,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:04:58,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:04:58,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:04:58,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:04:58" (1/1) ... [2018-08-07 11:04:58,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e38317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:58, skipping insertion in model container [2018-08-07 11:04:58,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:04:58" (1/1) ... [2018-08-07 11:04:58,542 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:04:59,055 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:04:59,073 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:04:59,339 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:04:59,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59 WrapperNode [2018-08-07 11:04:59,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:04:59,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:04:59,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:04:59,423 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:04:59,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:04:59,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:04:59,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:04:59,592 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:04:59,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:04:59,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... [2018-08-07 11:05:00,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:05:00,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:05:00,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:05:00,009 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:05:00,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-08-07 11:05:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:05:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:05:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:05:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 11:05:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:05:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:05:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:05:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:05:05,063 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:05:05,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:05:05 BoogieIcfgContainer [2018-08-07 11:05:05,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:05:05,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:05:05,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:05:05,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:05:05,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:04:58" (1/3) ... [2018-08-07 11:05:05,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:05:05, skipping insertion in model container [2018-08-07 11:05:05,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:04:59" (2/3) ... [2018-08-07 11:05:05,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:05:05, skipping insertion in model container [2018-08-07 11:05:05,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:05:05" (3/3) ... [2018-08-07 11:05:05,079 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label40_true-unreach-call.c [2018-08-07 11:05:05,089 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:05:05,107 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:05:05,182 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:05:05,183 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:05:05,183 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:05:05,183 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:05:05,183 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:05:05,184 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:05:05,184 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:05:05,184 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:05:05,184 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:05:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-08-07 11:05:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-08-07 11:05:05,247 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:05,248 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:05,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:05,255 INFO L82 PathProgramCache]: Analyzing trace with hash -859326052, now seen corresponding path program 1 times [2018-08-07 11:05:05,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:05,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:05,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:05,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:05,306 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:06,461 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:06,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 11:05:06,462 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:06,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 11:05:06,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 11:05:06,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 11:05:06,490 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-08-07 11:05:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:09,834 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-08-07 11:05:09,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 11:05:09,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-08-07 11:05:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:09,865 INFO L225 Difference]: With dead ends: 1054 [2018-08-07 11:05:09,865 INFO L226 Difference]: Without dead ends: 736 [2018-08-07 11:05:09,875 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 11:05:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-08-07 11:05:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-08-07 11:05:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-08-07 11:05:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-08-07 11:05:09,976 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 191 [2018-08-07 11:05:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:09,977 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-08-07 11:05:09,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 11:05:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-08-07 11:05:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-08-07 11:05:09,988 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:09,988 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:09,988 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1108255403, now seen corresponding path program 1 times [2018-08-07 11:05:09,989 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:09,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:09,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:09,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:09,994 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:10,355 WARN L170 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:05:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:10,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:10,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 11:05:10,513 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:10,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:05:10,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:05:10,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 11:05:10,516 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-08-07 11:05:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:13,611 INFO L93 Difference]: Finished difference Result 1492 states and 2599 transitions. [2018-08-07 11:05:13,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:05:13,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2018-08-07 11:05:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:13,622 INFO L225 Difference]: With dead ends: 1492 [2018-08-07 11:05:13,623 INFO L226 Difference]: Without dead ends: 972 [2018-08-07 11:05:13,628 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:05:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2018-08-07 11:05:13,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 951. [2018-08-07 11:05:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-08-07 11:05:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1526 transitions. [2018-08-07 11:05:13,692 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1526 transitions. Word has length 201 [2018-08-07 11:05:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:13,692 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1526 transitions. [2018-08-07 11:05:13,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:05:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1526 transitions. [2018-08-07 11:05:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-08-07 11:05:13,698 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:13,699 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:13,699 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash -803582056, now seen corresponding path program 1 times [2018-08-07 11:05:13,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:13,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:13,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:13,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:13,701 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:14,014 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:14,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:05:14,014 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:14,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:14,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:14,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:14,016 INFO L87 Difference]: Start difference. First operand 951 states and 1526 transitions. Second operand 3 states. [2018-08-07 11:05:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:16,522 INFO L93 Difference]: Finished difference Result 2745 states and 4537 transitions. [2018-08-07 11:05:16,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:16,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-08-07 11:05:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:16,550 INFO L225 Difference]: With dead ends: 2745 [2018-08-07 11:05:16,550 INFO L226 Difference]: Without dead ends: 1800 [2018-08-07 11:05:16,556 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:05:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-08-07 11:05:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-08-07 11:05:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-08-07 11:05:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2775 transitions. [2018-08-07 11:05:16,648 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2775 transitions. Word has length 204 [2018-08-07 11:05:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:16,649 INFO L480 AbstractCegarLoop]: Abstraction has 1798 states and 2775 transitions. [2018-08-07 11:05:16,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2775 transitions. [2018-08-07 11:05:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-08-07 11:05:16,660 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:16,661 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:16,661 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1724529435, now seen corresponding path program 1 times [2018-08-07 11:05:16,662 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:16,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:16,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:16,663 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:17,014 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:17,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-08-07 11:05:17,014 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:17,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:05:17,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:05:17,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:17,016 INFO L87 Difference]: Start difference. First operand 1798 states and 2775 transitions. Second operand 7 states. [2018-08-07 11:05:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:20,633 INFO L93 Difference]: Finished difference Result 5591 states and 9817 transitions. [2018-08-07 11:05:20,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:05:20,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2018-08-07 11:05:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:20,672 INFO L225 Difference]: With dead ends: 5591 [2018-08-07 11:05:20,673 INFO L226 Difference]: Without dead ends: 3799 [2018-08-07 11:05:20,683 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:05:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-08-07 11:05:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3621. [2018-08-07 11:05:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2018-08-07 11:05:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5701 transitions. [2018-08-07 11:05:20,839 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5701 transitions. Word has length 209 [2018-08-07 11:05:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:20,840 INFO L480 AbstractCegarLoop]: Abstraction has 3621 states and 5701 transitions. [2018-08-07 11:05:20,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:05:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5701 transitions. [2018-08-07 11:05:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-08-07 11:05:20,854 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:20,855 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:20,855 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1632431248, now seen corresponding path program 1 times [2018-08-07 11:05:20,855 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:20,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:20,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:20,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:20,857 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:21,115 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:21,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 11:05:21,115 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:21,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:05:21,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:05:21,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 11:05:21,117 INFO L87 Difference]: Start difference. First operand 3621 states and 5701 transitions. Second operand 6 states. [2018-08-07 11:05:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:23,317 INFO L93 Difference]: Finished difference Result 9454 states and 15492 transitions. [2018-08-07 11:05:23,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:05:23,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-08-07 11:05:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:23,351 INFO L225 Difference]: With dead ends: 9454 [2018-08-07 11:05:23,351 INFO L226 Difference]: Without dead ends: 5839 [2018-08-07 11:05:23,377 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 11:05:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2018-08-07 11:05:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5751. [2018-08-07 11:05:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2018-08-07 11:05:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8277 transitions. [2018-08-07 11:05:23,552 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8277 transitions. Word has length 216 [2018-08-07 11:05:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:23,553 INFO L480 AbstractCegarLoop]: Abstraction has 5751 states and 8277 transitions. [2018-08-07 11:05:23,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:05:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8277 transitions. [2018-08-07 11:05:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-08-07 11:05:23,572 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:23,573 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:23,573 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:23,574 INFO L82 PathProgramCache]: Analyzing trace with hash -895134751, now seen corresponding path program 1 times [2018-08-07 11:05:23,574 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:23,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:23,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:23,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:23,575 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:24,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:24,098 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-08-07 11:05:24,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:24,118 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:24,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:24,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:25,496 WARN L170 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-08-07 11:05:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:25,612 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:25,612 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:05:25,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:25,628 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:26,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:26,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:26,940 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:05:26,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-08-07 11:05:26,943 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:05:26,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-08-07 11:05:26,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-08-07 11:05:26,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:05:26,945 INFO L87 Difference]: Start difference. First operand 5751 states and 8277 transitions. Second operand 8 states. [2018-08-07 11:05:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:30,219 INFO L93 Difference]: Finished difference Result 11543 states and 17418 transitions. [2018-08-07 11:05:30,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:05:30,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2018-08-07 11:05:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:30,251 INFO L225 Difference]: With dead ends: 11543 [2018-08-07 11:05:30,251 INFO L226 Difference]: Without dead ends: 5798 [2018-08-07 11:05:30,274 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 882 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:05:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2018-08-07 11:05:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5619. [2018-08-07 11:05:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5619 states. [2018-08-07 11:05:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 7610 transitions. [2018-08-07 11:05:30,474 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 7610 transitions. Word has length 222 [2018-08-07 11:05:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:30,475 INFO L480 AbstractCegarLoop]: Abstraction has 5619 states and 7610 transitions. [2018-08-07 11:05:30,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-08-07 11:05:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 7610 transitions. [2018-08-07 11:05:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-08-07 11:05:30,497 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:30,497 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:30,498 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:30,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2110823573, now seen corresponding path program 1 times [2018-08-07 11:05:30,498 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:30,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:30,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:30,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:30,507 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:30,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:30,956 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-08-07 11:05:30,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:30,965 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:31,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:31,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:32,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:32,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:05:32,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:32,181 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:32,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:32,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:33,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:05:33,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-08-07 11:05:33,324 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:05:33,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:05:33,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:05:33,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-08-07 11:05:33,326 INFO L87 Difference]: Start difference. First operand 5619 states and 7610 transitions. Second operand 7 states. [2018-08-07 11:05:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:38,621 INFO L93 Difference]: Finished difference Result 20935 states and 31490 transitions. [2018-08-07 11:05:38,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 11:05:38,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-08-07 11:05:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:38,718 INFO L225 Difference]: With dead ends: 20935 [2018-08-07 11:05:38,718 INFO L226 Difference]: Without dead ends: 15322 [2018-08-07 11:05:38,769 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:05:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2018-08-07 11:05:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 14969. [2018-08-07 11:05:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14969 states. [2018-08-07 11:05:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 19807 transitions. [2018-08-07 11:05:39,346 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 19807 transitions. Word has length 276 [2018-08-07 11:05:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:39,347 INFO L480 AbstractCegarLoop]: Abstraction has 14969 states and 19807 transitions. [2018-08-07 11:05:39,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:05:39,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 19807 transitions. [2018-08-07 11:05:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-08-07 11:05:39,404 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:39,404 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:39,404 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:39,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1339118199, now seen corresponding path program 1 times [2018-08-07 11:05:39,405 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:39,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:39,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:39,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:39,407 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:39,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:39,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:39,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:39,987 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:40,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-08-07 11:05:40,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-08-07 11:05:40,864 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:05:40,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-08-07 11:05:40,865 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:40,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:05:40,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:05:40,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:40,866 INFO L87 Difference]: Start difference. First operand 14969 states and 19807 transitions. Second operand 3 states. [2018-08-07 11:05:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:41,738 INFO L93 Difference]: Finished difference Result 26101 states and 34455 transitions. [2018-08-07 11:05:41,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:05:41,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 280 [2018-08-07 11:05:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:41,795 INFO L225 Difference]: With dead ends: 26101 [2018-08-07 11:05:41,795 INFO L226 Difference]: Without dead ends: 14967 [2018-08-07 11:05:41,817 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2018-08-07 11:05:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 14967. [2018-08-07 11:05:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14967 states. [2018-08-07 11:05:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 19801 transitions. [2018-08-07 11:05:42,202 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 19801 transitions. Word has length 280 [2018-08-07 11:05:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:42,203 INFO L480 AbstractCegarLoop]: Abstraction has 14967 states and 19801 transitions. [2018-08-07 11:05:42,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:05:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 19801 transitions. [2018-08-07 11:05:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-08-07 11:05:42,252 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:42,252 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:42,252 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash -569318288, now seen corresponding path program 1 times [2018-08-07 11:05:42,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:42,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:42,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:42,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:42,254 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:42,570 WARN L170 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:05:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 90 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:43,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:43,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:43,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:43,355 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:43,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:05:43,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:44,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:05:44,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2018-08-07 11:05:44,463 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:44,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 11:05:44,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 11:05:44,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:05:44,464 INFO L87 Difference]: Start difference. First operand 14967 states and 19801 transitions. Second operand 6 states. [2018-08-07 11:05:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:46,917 INFO L93 Difference]: Finished difference Result 31561 states and 42642 transitions. [2018-08-07 11:05:46,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:05:46,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 288 [2018-08-07 11:05:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:47,014 INFO L225 Difference]: With dead ends: 31561 [2018-08-07 11:05:47,014 INFO L226 Difference]: Without dead ends: 16272 [2018-08-07 11:05:47,057 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 568 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-08-07 11:05:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2018-08-07 11:05:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 15946. [2018-08-07 11:05:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15946 states. [2018-08-07 11:05:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15946 states to 15946 states and 20882 transitions. [2018-08-07 11:05:47,464 INFO L78 Accepts]: Start accepts. Automaton has 15946 states and 20882 transitions. Word has length 288 [2018-08-07 11:05:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:47,465 INFO L480 AbstractCegarLoop]: Abstraction has 15946 states and 20882 transitions. [2018-08-07 11:05:47,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 11:05:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 15946 states and 20882 transitions. [2018-08-07 11:05:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-08-07 11:05:47,502 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:47,502 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:47,502 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:47,503 INFO L82 PathProgramCache]: Analyzing trace with hash -206211133, now seen corresponding path program 1 times [2018-08-07 11:05:47,503 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:47,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:47,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:47,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:47,504 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:48,031 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:05:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:48,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:48,230 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:48,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:48,247 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:48,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-08-07 11:05:48,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:05:49,022 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:05:49,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 11:05:49,023 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:49,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:05:49,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:05:49,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:05:49,024 INFO L87 Difference]: Start difference. First operand 15946 states and 20882 transitions. Second operand 5 states. [2018-08-07 11:05:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:51,787 INFO L93 Difference]: Finished difference Result 44547 states and 59537 transitions. [2018-08-07 11:05:51,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:05:51,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2018-08-07 11:05:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:51,921 INFO L225 Difference]: With dead ends: 44547 [2018-08-07 11:05:51,921 INFO L226 Difference]: Without dead ends: 28607 [2018-08-07 11:05:51,967 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:05:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28607 states. [2018-08-07 11:05:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28607 to 27426. [2018-08-07 11:05:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27426 states. [2018-08-07 11:05:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27426 states to 27426 states and 35402 transitions. [2018-08-07 11:05:52,619 INFO L78 Accepts]: Start accepts. Automaton has 27426 states and 35402 transitions. Word has length 290 [2018-08-07 11:05:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:52,619 INFO L480 AbstractCegarLoop]: Abstraction has 27426 states and 35402 transitions. [2018-08-07 11:05:52,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:05:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27426 states and 35402 transitions. [2018-08-07 11:05:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-08-07 11:05:52,651 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:52,651 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:52,652 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1632880686, now seen corresponding path program 1 times [2018-08-07 11:05:52,652 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:52,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:52,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:52,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:52,653 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:53,254 WARN L170 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:05:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:05:53,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:05:53,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-08-07 11:05:53,597 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:53,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:05:53,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:05:53,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:05:53,598 INFO L87 Difference]: Start difference. First operand 27426 states and 35402 transitions. Second operand 7 states. [2018-08-07 11:05:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:05:56,631 INFO L93 Difference]: Finished difference Result 75134 states and 104382 transitions. [2018-08-07 11:05:56,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-08-07 11:05:56,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-08-07 11:05:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:05:56,941 INFO L225 Difference]: With dead ends: 75134 [2018-08-07 11:05:56,941 INFO L226 Difference]: Without dead ends: 53604 [2018-08-07 11:05:57,016 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:05:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53604 states. [2018-08-07 11:05:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53604 to 52220. [2018-08-07 11:05:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52220 states. [2018-08-07 11:05:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52220 states to 52220 states and 66647 transitions. [2018-08-07 11:05:58,710 INFO L78 Accepts]: Start accepts. Automaton has 52220 states and 66647 transitions. Word has length 304 [2018-08-07 11:05:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:05:58,710 INFO L480 AbstractCegarLoop]: Abstraction has 52220 states and 66647 transitions. [2018-08-07 11:05:58,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:05:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 52220 states and 66647 transitions. [2018-08-07 11:05:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-08-07 11:05:58,760 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:05:58,761 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:05:58,761 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:05:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1326697983, now seen corresponding path program 1 times [2018-08-07 11:05:58,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:05:58,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:58,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:58,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:05:58,763 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:05:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:59,029 WARN L170 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:05:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-08-07 11:05:59,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:05:59,318 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:05:59,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:05:59,327 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:05:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:05:59,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:05:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-08-07 11:05:59,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:05:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-08-07 11:05:59,844 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:05:59,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-08-07 11:05:59,845 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:05:59,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:05:59,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:05:59,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:05:59,846 INFO L87 Difference]: Start difference. First operand 52220 states and 66647 transitions. Second operand 5 states. [2018-08-07 11:06:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:02,659 INFO L93 Difference]: Finished difference Result 127152 states and 163719 transitions. [2018-08-07 11:06:02,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:06:02,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-08-07 11:06:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:03,516 INFO L225 Difference]: With dead ends: 127152 [2018-08-07 11:06:03,517 INFO L226 Difference]: Without dead ends: 74953 [2018-08-07 11:06:03,602 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:06:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74953 states. [2018-08-07 11:06:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74953 to 74240. [2018-08-07 11:06:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74240 states. [2018-08-07 11:06:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74240 states to 74240 states and 93542 transitions. [2018-08-07 11:06:04,996 INFO L78 Accepts]: Start accepts. Automaton has 74240 states and 93542 transitions. Word has length 307 [2018-08-07 11:06:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:04,996 INFO L480 AbstractCegarLoop]: Abstraction has 74240 states and 93542 transitions. [2018-08-07 11:06:04,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:06:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 74240 states and 93542 transitions. [2018-08-07 11:06:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-08-07 11:06:05,045 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:05,045 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:06:05,045 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:05,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1034631474, now seen corresponding path program 1 times [2018-08-07 11:06:05,046 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:05,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:05,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:05,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:05,047 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:05,467 WARN L170 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:06:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 113 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:05,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:05,706 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:05,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:05,715 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:05,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:06,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:06,345 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:06,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:06:06,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:06,362 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:06,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-08-07 11:06:07,177 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-08-07 11:06:07,960 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-08-07 11:06:07,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 5, 5] total 21 [2018-08-07 11:06:07,960 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:06:07,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:06:07,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:06:07,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-08-07 11:06:07,962 INFO L87 Difference]: Start difference. First operand 74240 states and 93542 transitions. Second operand 5 states. [2018-08-07 11:06:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:10,229 INFO L93 Difference]: Finished difference Result 188242 states and 242216 transitions. [2018-08-07 11:06:10,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:06:10,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2018-08-07 11:06:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:10,702 INFO L225 Difference]: With dead ends: 188242 [2018-08-07 11:06:10,702 INFO L226 Difference]: Without dead ends: 131001 [2018-08-07 11:06:10,839 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1224 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-08-07 11:06:10,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131001 states. [2018-08-07 11:06:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131001 to 129633. [2018-08-07 11:06:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129633 states. [2018-08-07 11:06:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129633 states to 129633 states and 162384 transitions. [2018-08-07 11:06:15,025 INFO L78 Accepts]: Start accepts. Automaton has 129633 states and 162384 transitions. Word has length 309 [2018-08-07 11:06:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:15,026 INFO L480 AbstractCegarLoop]: Abstraction has 129633 states and 162384 transitions. [2018-08-07 11:06:15,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:06:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 129633 states and 162384 transitions. [2018-08-07 11:06:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-08-07 11:06:15,087 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:15,087 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:06:15,088 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash 694967487, now seen corresponding path program 1 times [2018-08-07 11:06:15,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:15,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:15,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:15,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:15,089 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:15,478 WARN L170 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:06:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:06:15,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:15,608 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:15,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:15,616 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:15,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:06:15,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:06:16,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:16,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:06:16,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:16,161 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:16,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:06:16,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:06:17,303 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:06:17,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4, 4, 4] total 15 [2018-08-07 11:06:17,304 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:06:17,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-07 11:06:17,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-07 11:06:17,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:06:17,306 INFO L87 Difference]: Start difference. First operand 129633 states and 162384 transitions. Second operand 10 states. [2018-08-07 11:06:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:29,218 INFO L93 Difference]: Finished difference Result 262622 states and 367442 transitions. [2018-08-07 11:06:29,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-08-07 11:06:29,218 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 310 [2018-08-07 11:06:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:30,033 INFO L225 Difference]: With dead ends: 262622 [2018-08-07 11:06:30,033 INFO L226 Difference]: Without dead ends: 131621 [2018-08-07 11:06:30,337 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1267 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=760, Invalid=2546, Unknown=0, NotChecked=0, Total=3306 [2018-08-07 11:06:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131621 states. [2018-08-07 11:06:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131621 to 119278. [2018-08-07 11:06:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119278 states. [2018-08-07 11:06:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119278 states to 119278 states and 154982 transitions. [2018-08-07 11:06:34,191 INFO L78 Accepts]: Start accepts. Automaton has 119278 states and 154982 transitions. Word has length 310 [2018-08-07 11:06:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:34,191 INFO L480 AbstractCegarLoop]: Abstraction has 119278 states and 154982 transitions. [2018-08-07 11:06:34,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-07 11:06:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 119278 states and 154982 transitions. [2018-08-07 11:06:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-08-07 11:06:34,294 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:34,295 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:06:34,295 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash 789354965, now seen corresponding path program 1 times [2018-08-07 11:06:34,295 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:34,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:34,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:34,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:34,296 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:34,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:34,728 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:34,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:34,737 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:34,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:35,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:35,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:35,215 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:06:35,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:35,233 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:35,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:36,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:36,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:06:36,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-08-07 11:06:36,906 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:06:36,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:06:36,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:06:36,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 11:06:36,908 INFO L87 Difference]: Start difference. First operand 119278 states and 154982 transitions. Second operand 9 states. [2018-08-07 11:06:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:06:52,844 INFO L93 Difference]: Finished difference Result 256293 states and 360560 transitions. [2018-08-07 11:06:52,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-08-07 11:06:52,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2018-08-07 11:06:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:06:53,523 INFO L225 Difference]: With dead ends: 256293 [2018-08-07 11:06:53,523 INFO L226 Difference]: Without dead ends: 137031 [2018-08-07 11:06:53,783 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-08-07 11:06:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137031 states. [2018-08-07 11:06:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137031 to 128671. [2018-08-07 11:06:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128671 states. [2018-08-07 11:06:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128671 states to 128671 states and 157049 transitions. [2018-08-07 11:06:57,563 INFO L78 Accepts]: Start accepts. Automaton has 128671 states and 157049 transitions. Word has length 329 [2018-08-07 11:06:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:06:57,563 INFO L480 AbstractCegarLoop]: Abstraction has 128671 states and 157049 transitions. [2018-08-07 11:06:57,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:06:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 128671 states and 157049 transitions. [2018-08-07 11:06:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-08-07 11:06:57,660 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:06:57,660 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:06:57,661 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:06:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1582672545, now seen corresponding path program 1 times [2018-08-07 11:06:57,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:06:57,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:57,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:57,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:06:57,662 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:06:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:06:58,108 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:06:58,108 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:06:58,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:06:58,116 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:06:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:06:58,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:06:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:06:58,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:06:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-08-07 11:06:58,887 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 11:06:58,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-08-07 11:06:58,888 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:06:58,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:06:58,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:06:58,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:06:58,889 INFO L87 Difference]: Start difference. First operand 128671 states and 157049 transitions. Second operand 3 states. [2018-08-07 11:07:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:02,778 INFO L93 Difference]: Finished difference Result 247556 states and 302688 transitions. [2018-08-07 11:07:02,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:07:02,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 354 [2018-08-07 11:07:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:03,106 INFO L225 Difference]: With dead ends: 247556 [2018-08-07 11:07:03,106 INFO L226 Difference]: Without dead ends: 118951 [2018-08-07 11:07:03,281 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:07:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118951 states. [2018-08-07 11:07:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118951 to 117486. [2018-08-07 11:07:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117486 states. [2018-08-07 11:07:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117486 states to 117486 states and 143099 transitions. [2018-08-07 11:07:06,261 INFO L78 Accepts]: Start accepts. Automaton has 117486 states and 143099 transitions. Word has length 354 [2018-08-07 11:07:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:06,261 INFO L480 AbstractCegarLoop]: Abstraction has 117486 states and 143099 transitions. [2018-08-07 11:07:06,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:07:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 117486 states and 143099 transitions. [2018-08-07 11:07:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-08-07 11:07:06,463 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:07:06,463 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:07:06,463 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:07:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash -685305379, now seen corresponding path program 1 times [2018-08-07 11:07:06,464 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:07:06,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:06,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:06,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:07:06,465 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:07:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-08-07 11:07:07,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:07,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:07:07,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:07,101 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:07,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 11:07:07,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 11:07:07,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:07:07,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:07:07,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:07:07,953 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:07:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:07:08,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:07:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 11:07:09,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:07:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 11:07:09,867 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:07:09,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-08-07 11:07:09,868 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:07:09,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:07:09,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:07:09,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:07:09,869 INFO L87 Difference]: Start difference. First operand 117486 states and 143099 transitions. Second operand 9 states. [2018-08-07 11:07:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:07:20,105 INFO L93 Difference]: Finished difference Result 219708 states and 288561 transitions. [2018-08-07 11:07:20,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-08-07 11:07:20,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 475 [2018-08-07 11:07:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:07:20,106 INFO L225 Difference]: With dead ends: 219708 [2018-08-07 11:07:20,106 INFO L226 Difference]: Without dead ends: 0 [2018-08-07 11:07:20,437 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1965 GetRequests, 1917 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2018-08-07 11:07:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-08-07 11:07:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-08-07 11:07:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-08-07 11:07:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-08-07 11:07:20,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 475 [2018-08-07 11:07:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:07:20,441 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-08-07 11:07:20,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:07:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-08-07 11:07:20,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-08-07 11:07:20,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-08-07 11:07:26,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:26,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:26,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:26,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:26,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:26,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:27,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:27,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:27,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:27,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:27,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:29,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:29,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:31,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:31,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:31,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:31,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:32,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:38,617 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:41,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:54,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:07:54,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:15,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:15,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:15,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:15,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:15,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:16,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:17,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:19,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:20,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:20,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:21,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:21,844 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:23,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:23,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:24,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:25,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:26,830 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:27,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:34,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:35,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:36,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:37,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:38,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:43,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-08-07 11:08:45,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-08-07 11:08:47,250 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-08-07 11:08:47,251 INFO L168 Benchmark]: Toolchain (without parser) took 228969.50 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -80.9 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,253 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-08-07 11:08:47,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1135.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,254 INFO L168 Benchmark]: Boogie Preprocessor took 416.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,255 INFO L168 Benchmark]: RCFGBuilder took 5056.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 291.2 MB). Peak memory consumption was 291.2 MB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,256 INFO L168 Benchmark]: TraceAbstraction took 222184.44 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 450.3 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-08-07 11:08:47,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1135.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 167.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 416.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5056.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 291.2 MB). Peak memory consumption was 291.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222184.44 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 450.3 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1587]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 5180. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-08-47-276.csv Completed graceful shutdown