java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:08:12,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:08:12,462 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:08:12,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:08:12,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:08:12,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:08:12,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:08:12,480 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:08:12,483 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:08:12,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:08:12,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:08:12,488 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:08:12,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:08:12,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:08:12,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:08:12,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:08:12,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:08:12,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:08:12,506 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:08:12,509 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:08:12,510 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:08:12,511 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:08:12,513 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:08:12,517 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:08:12,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:08:12,519 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:08:12,520 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:08:12,520 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:08:12,521 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:08:12,522 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:08:12,522 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:08:12,523 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:08:12,523 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:08:12,523 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:08:12,526 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:08:12,527 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:08:12,527 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 [2018-07-24 14:08:12,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:08:12,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:08:12,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:08:12,551 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:08:12,552 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:08:12,552 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:08:12,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:08:12,552 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:08:12,552 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:08:12,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:08:12,553 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:08:12,553 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:08:12,554 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:08:12,554 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:08:12,554 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:08:12,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:08:12,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:08:12,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:08:12,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:08:12,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:08:12,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:08:12,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:08:12,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:08:12,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:08:12,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:08:12,558 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:08:12,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:08:12,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:08:12,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:08:12,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:08:12,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:08:12,641 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:08:12,642 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:08:12,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-07-24 14:08:13,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aef07e2/9a72bf687080444db332ca4a1d5f66d0/FLAG2bf2010bc [2018-07-24 14:08:13,559 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:08:13,560 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-07-24 14:08:13,598 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aef07e2/9a72bf687080444db332ca4a1d5f66d0/FLAG2bf2010bc [2018-07-24 14:08:13,618 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3aef07e2/9a72bf687080444db332ca4a1d5f66d0 [2018-07-24 14:08:13,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:08:13,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:08:13,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:13,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:08:13,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:08:13,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:13" (1/1) ... [2018-07-24 14:08:13,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6375fbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:13, skipping insertion in model container [2018-07-24 14:08:13,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:13" (1/1) ... [2018-07-24 14:08:14,043 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:08:15,001 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:15,018 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:08:15,677 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:15,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15 WrapperNode [2018-07-24 14:08:15,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:15,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:15,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:08:15,919 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:08:15,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:16,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:08:16,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:08:16,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:08:16,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:16,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:17,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:17,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (1/1) ... [2018-07-24 14:08:17,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:08:17,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:08:17,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:08:17,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:08:17,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (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 [2018-07-24 14:08:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:08:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:08:17,280 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 [2018-07-24 14:08:17,280 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 [2018-07-24 14:08:17,280 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_output3 [2018-07-24 14:08:17,280 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_output3 [2018-07-24 14:08:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:08:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:08:17,281 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_output4 [2018-07-24 14:08:17,281 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_output4 [2018-07-24 14:08:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:08:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:08:17,283 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_output2 [2018-07-24 14:08:17,283 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_output2 [2018-07-24 14:08:27,429 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:08:27,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:08:27 BoogieIcfgContainer [2018-07-24 14:08:27,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:08:27,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:08:27,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:08:27,436 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:08:27,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:08:13" (1/3) ... [2018-07-24 14:08:27,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0c20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:08:27, skipping insertion in model container [2018-07-24 14:08:27,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:15" (2/3) ... [2018-07-24 14:08:27,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0c20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:08:27, skipping insertion in model container [2018-07-24 14:08:27,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:08:27" (3/3) ... [2018-07-24 14:08:27,441 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-07-24 14:08:27,450 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:08:27,459 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:08:27,533 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:08:27,534 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:08:27,534 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:08:27,534 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:08:27,534 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:08:27,534 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:08:27,534 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:08:27,535 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:08:27,535 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:08:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:08:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-24 14:08:27,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:27,589 INFO L353 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] [2018-07-24 14:08:27,590 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:27,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1220648879, now seen corresponding path program 1 times [2018-07-24 14:08:27,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:27,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:27,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:27,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:27,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:28,074 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:08:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:28,196 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:28,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:08:28,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:28,204 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:08:28,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:08:28,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:08:28,225 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:08:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:37,386 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:08:37,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:08:37,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-07-24 14:08:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:37,422 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:08:37,422 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:08:37,432 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:08:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:08:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:08:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:08:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-07-24 14:08:37,576 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 47 [2018-07-24 14:08:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:37,577 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-07-24 14:08:37,578 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:08:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-07-24 14:08:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-24 14:08:37,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:37,586 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:37,586 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash 620620002, now seen corresponding path program 1 times [2018-07-24 14:08:37,587 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:37,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:37,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:37,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:37,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:37,860 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:37,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:08:37,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:37,862 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:37,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:37,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:08:37,863 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 5 states. [2018-07-24 14:08:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:54,977 INFO L93 Difference]: Finished difference Result 4873 states and 9168 transitions. [2018-07-24 14:08:54,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:08:54,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-07-24 14:08:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:55,003 INFO L225 Difference]: With dead ends: 4873 [2018-07-24 14:08:55,003 INFO L226 Difference]: Without dead ends: 3275 [2018-07-24 14:08:55,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:08:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-07-24 14:08:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-07-24 14:08:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-07-24 14:08:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5443 transitions. [2018-07-24 14:08:55,152 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5443 transitions. Word has length 117 [2018-07-24 14:08:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:55,153 INFO L471 AbstractCegarLoop]: Abstraction has 3241 states and 5443 transitions. [2018-07-24 14:08:55,153 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:08:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5443 transitions. [2018-07-24 14:08:55,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-24 14:08:55,159 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:55,159 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:55,160 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:55,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1016371954, now seen corresponding path program 1 times [2018-07-24 14:08:55,160 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:55,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:55,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:55,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:55,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:08:55,425 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:55,425 INFO L191 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 [2018-07-24 14:08:55,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:55,443 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:55,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:08:55,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:08:56,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:08:56,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-07-24 14:08:56,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:56,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:08:56,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:08:56,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:08:56,398 INFO L87 Difference]: Start difference. First operand 3241 states and 5443 transitions. Second operand 4 states. [2018-07-24 14:09:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:07,480 INFO L93 Difference]: Finished difference Result 9656 states and 16530 transitions. [2018-07-24 14:09:07,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:09:07,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-07-24 14:09:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:07,519 INFO L225 Difference]: With dead ends: 9656 [2018-07-24 14:09:07,519 INFO L226 Difference]: Without dead ends: 6421 [2018-07-24 14:09:07,534 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:09:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2018-07-24 14:09:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 6421. [2018-07-24 14:09:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6421 states. [2018-07-24 14:09:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 10107 transitions. [2018-07-24 14:09:07,714 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 10107 transitions. Word has length 123 [2018-07-24 14:09:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:07,715 INFO L471 AbstractCegarLoop]: Abstraction has 6421 states and 10107 transitions. [2018-07-24 14:09:07,715 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:09:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 10107 transitions. [2018-07-24 14:09:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-24 14:09:07,721 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:07,722 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:07,722 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:07,722 INFO L82 PathProgramCache]: Analyzing trace with hash 41697410, now seen corresponding path program 1 times [2018-07-24 14:09:07,722 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:07,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:07,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:07,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:07,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:08,048 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:09:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:09:08,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:08,104 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:08,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:08,115 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:08,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:08,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:08,361 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:09:08,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 14:09:08,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:08,363 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:09:08,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:09:08,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:09:08,363 INFO L87 Difference]: Start difference. First operand 6421 states and 10107 transitions. Second operand 3 states. [2018-07-24 14:09:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:14,728 INFO L93 Difference]: Finished difference Result 19077 states and 30898 transitions. [2018-07-24 14:09:14,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:09:14,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2018-07-24 14:09:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:14,816 INFO L225 Difference]: With dead ends: 19077 [2018-07-24 14:09:14,820 INFO L226 Difference]: Without dead ends: 12662 [2018-07-24 14:09:14,859 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 393 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:09:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2018-07-24 14:09:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 12662. [2018-07-24 14:09:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12662 states. [2018-07-24 14:09:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12662 states to 12662 states and 20031 transitions. [2018-07-24 14:09:15,190 INFO L78 Accepts]: Start accepts. Automaton has 12662 states and 20031 transitions. Word has length 197 [2018-07-24 14:09:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:15,191 INFO L471 AbstractCegarLoop]: Abstraction has 12662 states and 20031 transitions. [2018-07-24 14:09:15,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:09:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12662 states and 20031 transitions. [2018-07-24 14:09:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-24 14:09:15,201 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:15,201 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:15,201 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 749480957, now seen corresponding path program 1 times [2018-07-24 14:09:15,202 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:15,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:15,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:15,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:15,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:15,629 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:15,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:09:15,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:15,630 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:09:15,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:09:15,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:09:15,631 INFO L87 Difference]: Start difference. First operand 12662 states and 20031 transitions. Second operand 5 states. [2018-07-24 14:09:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:35,666 INFO L93 Difference]: Finished difference Result 48133 states and 80421 transitions. [2018-07-24 14:09:35,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:09:35,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-07-24 14:09:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:35,854 INFO L225 Difference]: With dead ends: 48133 [2018-07-24 14:09:35,854 INFO L226 Difference]: Without dead ends: 35477 [2018-07-24 14:09:35,939 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:09:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35477 states. [2018-07-24 14:09:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35477 to 35268. [2018-07-24 14:09:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35268 states. [2018-07-24 14:09:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35268 states to 35268 states and 53722 transitions. [2018-07-24 14:09:36,866 INFO L78 Accepts]: Start accepts. Automaton has 35268 states and 53722 transitions. Word has length 230 [2018-07-24 14:09:36,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:36,866 INFO L471 AbstractCegarLoop]: Abstraction has 35268 states and 53722 transitions. [2018-07-24 14:09:36,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 35268 states and 53722 transitions. [2018-07-24 14:09:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-24 14:09:36,891 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:36,891 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:36,891 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1743110525, now seen corresponding path program 1 times [2018-07-24 14:09:36,892 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:36,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:36,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:37,173 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:09:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:09:37,586 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:37,586 INFO L191 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 [2018-07-24 14:09:37,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:37,598 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:37,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-24 14:09:38,146 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:09:39,165 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:09:39,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:09:39,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:39,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:09:39,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:09:39,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:09:39,167 INFO L87 Difference]: Start difference. First operand 35268 states and 53722 transitions. Second operand 5 states. [2018-07-24 14:09:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:48,431 INFO L93 Difference]: Finished difference Result 78430 states and 123693 transitions. [2018-07-24 14:09:48,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:09:48,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2018-07-24 14:09:48,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:48,596 INFO L225 Difference]: With dead ends: 78430 [2018-07-24 14:09:48,596 INFO L226 Difference]: Without dead ends: 43168 [2018-07-24 14:09:48,668 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 521 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:09:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43168 states. [2018-07-24 14:09:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43168 to 42852. [2018-07-24 14:09:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42852 states. [2018-07-24 14:09:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42852 states to 42852 states and 54508 transitions. [2018-07-24 14:09:49,504 INFO L78 Accepts]: Start accepts. Automaton has 42852 states and 54508 transitions. Word has length 263 [2018-07-24 14:09:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:49,504 INFO L471 AbstractCegarLoop]: Abstraction has 42852 states and 54508 transitions. [2018-07-24 14:09:49,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 42852 states and 54508 transitions. [2018-07-24 14:09:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-24 14:09:49,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:49,526 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:49,526 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash 304481442, now seen corresponding path program 1 times [2018-07-24 14:09:49,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:49,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:49,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:50,109 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:50,109 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:50,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:50,125 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:50,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:50,689 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:50,840 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:09:50,946 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:09:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:51,501 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:51,501 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:51,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:51,518 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:51,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:51,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:52,171 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:09:52,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 14:09:52,171 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:09:52,172 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:09:52,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:09:52,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:09:52,173 INFO L87 Difference]: Start difference. First operand 42852 states and 54508 transitions. Second operand 9 states. [2018-07-24 14:10:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:08,152 INFO L93 Difference]: Finished difference Result 104966 states and 143107 transitions. [2018-07-24 14:10:08,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:10:08,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 294 [2018-07-24 14:10:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:08,338 INFO L225 Difference]: With dead ends: 104966 [2018-07-24 14:10:08,338 INFO L226 Difference]: Without dead ends: 62120 [2018-07-24 14:10:08,422 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1168 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:10:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62120 states. [2018-07-24 14:10:09,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62120 to 61235. [2018-07-24 14:10:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61235 states. [2018-07-24 14:10:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61235 states to 61235 states and 81404 transitions. [2018-07-24 14:10:09,463 INFO L78 Accepts]: Start accepts. Automaton has 61235 states and 81404 transitions. Word has length 294 [2018-07-24 14:10:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:09,464 INFO L471 AbstractCegarLoop]: Abstraction has 61235 states and 81404 transitions. [2018-07-24 14:10:09,464 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:10:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 61235 states and 81404 transitions. [2018-07-24 14:10:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-24 14:10:09,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:09,478 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:10:09,478 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:10:09,478 INFO L82 PathProgramCache]: Analyzing trace with hash -485270678, now seen corresponding path program 1 times [2018-07-24 14:10:09,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:09,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:09,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:09,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:09,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 139 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:09,904 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:09,904 INFO L191 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 [2018-07-24 14:10:09,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:09,919 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:10,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 14:10:10,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 14:10:10,576 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:10:10,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-07-24 14:10:10,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:10,577 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:10:10,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:10:10,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:10,577 INFO L87 Difference]: Start difference. First operand 61235 states and 81404 transitions. Second operand 3 states. [2018-07-24 14:10:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:16,703 INFO L93 Difference]: Finished difference Result 176034 states and 241352 transitions. [2018-07-24 14:10:16,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:16,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2018-07-24 14:10:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:17,061 INFO L225 Difference]: With dead ends: 176034 [2018-07-24 14:10:17,061 INFO L226 Difference]: Without dead ends: 114805 [2018-07-24 14:10:17,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114805 states. [2018-07-24 14:10:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114805 to 114802. [2018-07-24 14:10:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114802 states. [2018-07-24 14:10:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114802 states to 114802 states and 145223 transitions. [2018-07-24 14:10:19,752 INFO L78 Accepts]: Start accepts. Automaton has 114802 states and 145223 transitions. Word has length 298 [2018-07-24 14:10:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:19,752 INFO L471 AbstractCegarLoop]: Abstraction has 114802 states and 145223 transitions. [2018-07-24 14:10:19,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:10:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 114802 states and 145223 transitions. [2018-07-24 14:10:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-24 14:10:19,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:19,785 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:10:19,785 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:10:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1197038092, now seen corresponding path program 1 times [2018-07-24 14:10:19,785 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:19,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:19,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:19,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:19,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:10:20,178 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:20,178 INFO L191 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 [2018-07-24 14:10:20,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:20,188 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:20,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:10:20,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:10:21,542 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:21,542 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:10:21,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:21,562 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:21,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:10:21,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (9)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 14:10:22,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:10:22,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:10:22,153 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:10:22,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:10:22,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:10:22,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:10:22,154 INFO L87 Difference]: Start difference. First operand 114802 states and 145223 transitions. Second operand 9 states. [2018-07-24 14:10:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:42,072 INFO L93 Difference]: Finished difference Result 314297 states and 438234 transitions. [2018-07-24 14:10:42,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:10:42,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 365 [2018-07-24 14:10:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:42,751 INFO L225 Difference]: With dead ends: 314297 [2018-07-24 14:10:42,751 INFO L226 Difference]: Without dead ends: 186522 [2018-07-24 14:10:43,075 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1456 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:10:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186522 states. [2018-07-24 14:10:46,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186522 to 177524. [2018-07-24 14:10:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177524 states. [2018-07-24 14:10:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177524 states to 177524 states and 231817 transitions. [2018-07-24 14:10:47,002 INFO L78 Accepts]: Start accepts. Automaton has 177524 states and 231817 transitions. Word has length 365 [2018-07-24 14:10:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:47,003 INFO L471 AbstractCegarLoop]: Abstraction has 177524 states and 231817 transitions. [2018-07-24 14:10:47,003 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:10:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 177524 states and 231817 transitions. [2018-07-24 14:10:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-07-24 14:10:47,072 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:47,073 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:10:47,073 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:10:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2016092092, now seen corresponding path program 1 times [2018-07-24 14:10:47,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:47,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:47,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:47,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:47,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-07-24 14:10:47,514 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:47,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:10:47,515 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:47,515 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:10:47,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:10:47,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:47,516 INFO L87 Difference]: Start difference. First operand 177524 states and 231817 transitions. Second operand 3 states. [2018-07-24 14:10:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:57,274 INFO L93 Difference]: Finished difference Result 383905 states and 507738 transitions. [2018-07-24 14:10:57,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:57,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 469 [2018-07-24 14:10:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:58,037 INFO L225 Difference]: With dead ends: 383905 [2018-07-24 14:10:58,037 INFO L226 Difference]: Without dead ends: 207155 [2018-07-24 14:10:58,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207155 states. [2018-07-24 14:11:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207155 to 201712. [2018-07-24 14:11:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201712 states. [2018-07-24 14:11:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201712 states to 201712 states and 258646 transitions. [2018-07-24 14:11:10,808 INFO L78 Accepts]: Start accepts. Automaton has 201712 states and 258646 transitions. Word has length 469 [2018-07-24 14:11:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:10,809 INFO L471 AbstractCegarLoop]: Abstraction has 201712 states and 258646 transitions. [2018-07-24 14:11:10,809 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:11:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 201712 states and 258646 transitions. [2018-07-24 14:11:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-07-24 14:11:11,369 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:11,369 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:11:11,370 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:11,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1623194510, now seen corresponding path program 1 times [2018-07-24 14:11:11,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:11,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:11,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 585 proven. 6 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-07-24 14:11:13,488 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:13,488 INFO L191 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 [2018-07-24 14:11:13,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:13,496 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:13,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-24 14:11:14,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-24 14:11:16,648 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:16,648 INFO L191 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 [2018-07-24 14:11:16,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:16,664 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:17,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-24 14:11:18,245 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-24 14:11:19,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:11:19,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-07-24 14:11:19,983 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:11:19,985 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:11:19,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:11:19,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:11:19,985 INFO L87 Difference]: Start difference. First operand 201712 states and 258646 transitions. Second operand 7 states. [2018-07-24 14:11:48,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:48,808 INFO L93 Difference]: Finished difference Result 507177 states and 739354 transitions. [2018-07-24 14:11:48,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 14:11:48,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1086 [2018-07-24 14:11:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:50,044 INFO L225 Difference]: With dead ends: 507177 [2018-07-24 14:11:50,045 INFO L226 Difference]: Without dead ends: 305465 [2018-07-24 14:11:50,490 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4368 GetRequests, 4345 SyntacticMatches, 9 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:11:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305465 states. Received shutdown request... [2018-07-24 14:11:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305465 to 296238. [2018-07-24 14:11:57,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296238 states. [2018-07-24 14:11:57,176 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:11:57,182 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:11:57,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:11:57 BoogieIcfgContainer [2018-07-24 14:11:57,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:11:57,183 INFO L168 Benchmark]: Toolchain (without parser) took 223550.06 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,185 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-07-24 14:11:57,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2282.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 252.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,187 INFO L168 Benchmark]: Boogie Preprocessor took 1027.53 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,188 INFO L168 Benchmark]: RCFGBuilder took 10231.68 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 172.0 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -161.3 MB). Peak memory consumption was 738.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,189 INFO L168 Benchmark]: TraceAbstraction took 209751.22 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: -28.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:11:57,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2282.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 252.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1027.53 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10231.68 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 172.0 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -161.3 MB). Peak memory consumption was 738.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209751.22 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.5 GB). Free memory was 2.5 GB in the beginning and 2.5 GB in the end (delta: -28.7 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 159.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4407 SDtfs, 27507 SDslu, 1811 SDs, 0 SdLazy, 56888 SolverSat, 15843 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 121.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8851 GetRequests, 8735 SyntacticMatches, 32 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201712occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 29.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 15888 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 7860 NumberOfCodeBlocks, 7860 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 12200 ConstructedInterpolants, 0 QuantifiedInterpolants, 30893519 SizeOfPredicates, 10 NumberOfNonLiveVariables, 6759 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 8110/8470 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-11-57-210.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-11-57-210.csv Completed graceful shutdown