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/Problem03_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:48:22,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:48:22,522 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:48:22,541 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:48:22,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:48:22,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:48:22,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:48:22,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:48:22,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:48:22,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:48:22,548 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:48:22,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:48:22,549 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:48:22,550 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:48:22,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:48:22,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:48:22,557 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:48:22,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:48:22,560 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:48:22,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:48:22,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:48:22,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:48:22,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:48:22,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:48:22,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:48:22,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:48:22,569 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:48:22,569 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:48:22,570 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:48:22,571 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:48:22,572 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:48:22,572 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:48:22,573 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:48:22,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:48:22,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:48:22,575 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:48:22,575 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 12:48:22,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:48:22,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:48:22,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:48:22,604 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:48:22,604 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:48:22,605 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:48:22,605 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:48:22,605 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:48:22,605 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:48:22,605 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:48:22,606 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:48:22,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:48:22,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:48:22,608 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:48:22,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:48:22,609 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:48:22,609 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:48:22,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:48:22,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:48:22,611 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:48:22,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:48:22,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:48:22,612 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:48:22,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:48:22,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:48:22,612 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:48:22,612 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:48:22,613 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:48:22,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:48:22,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:48:22,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:48:22,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:48:22,691 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:48:22,692 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-07-24 12:48:23,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f37e97ff/def2f762396046db97d17d1e95ebcacf/FLAGd7a639ea2 [2018-07-24 12:48:23,413 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:48:23,414 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-07-24 12:48:23,435 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f37e97ff/def2f762396046db97d17d1e95ebcacf/FLAGd7a639ea2 [2018-07-24 12:48:23,452 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f37e97ff/def2f762396046db97d17d1e95ebcacf [2018-07-24 12:48:23,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:48:23,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:48:23,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:48:23,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:48:23,475 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:48:23,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:48:23" (1/1) ... [2018-07-24 12:48:23,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e46634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:23, skipping insertion in model container [2018-07-24 12:48:23,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:48:23" (1/1) ... [2018-07-24 12:48:23,717 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:48:24,197 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:48:24,216 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:48:24,782 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:48:24,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24 WrapperNode [2018-07-24 12:48:24,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:48:24,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:48:24,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:48:24,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:48:24,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:24,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:48:25,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:48:25,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:48:25,044 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:48:25,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (1/1) ... [2018-07-24 12:48:25,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:48:25,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:48:25,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:48:25,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:48:25,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (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 12:48:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:48:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:48:25,502 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 12:48:25,502 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 12:48:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:48:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:48:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:48:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:48:30,857 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:48:30,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:48:30 BoogieIcfgContainer [2018-07-24 12:48:30,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:48:30,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:48:30,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:48:30,870 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:48:30,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:48:23" (1/3) ... [2018-07-24 12:48:30,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336e4fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:48:30, skipping insertion in model container [2018-07-24 12:48:30,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:48:24" (2/3) ... [2018-07-24 12:48:30,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336e4fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:48:30, skipping insertion in model container [2018-07-24 12:48:30,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:48:30" (3/3) ... [2018-07-24 12:48:30,876 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label14_true-unreach-call.c [2018-07-24 12:48:30,886 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:48:30,894 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:48:30,948 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:48:30,949 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:48:30,949 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:48:30,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:48:30,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:48:30,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:48:30,949 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:48:30,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:48:30,950 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:48:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 12:48:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-24 12:48:31,007 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:31,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:31,009 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 12:48:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash -594515452, now seen corresponding path program 1 times [2018-07-24 12:48:31,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:31,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:31,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:31,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:31,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:31,875 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:48:32,065 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 12:48:32,068 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:32,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:32,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:32,076 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:32,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:32,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:32,099 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 12:48:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:34,506 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-07-24 12:48:34,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:34,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2018-07-24 12:48:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:34,531 INFO L225 Difference]: With dead ends: 838 [2018-07-24 12:48:34,531 INFO L226 Difference]: Without dead ends: 524 [2018-07-24 12:48:34,539 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 12:48:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-07-24 12:48:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-07-24 12:48:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-07-24 12:48:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-07-24 12:48:34,636 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 177 [2018-07-24 12:48:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:34,637 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-07-24 12:48:34,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-07-24 12:48:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-24 12:48:34,649 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:34,650 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:34,650 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 12:48:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1749816701, now seen corresponding path program 1 times [2018-07-24 12:48:34,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:34,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:34,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:34,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:34,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:34,984 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:34,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:48:34,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:34,986 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:34,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:34,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:48:34,987 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-07-24 12:48:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:38,464 INFO L93 Difference]: Finished difference Result 1271 states and 2186 transitions. [2018-07-24 12:48:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:48:38,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-07-24 12:48:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:38,473 INFO L225 Difference]: With dead ends: 1271 [2018-07-24 12:48:38,473 INFO L226 Difference]: Without dead ends: 755 [2018-07-24 12:48:38,478 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:48:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2018-07-24 12:48:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 739. [2018-07-24 12:48:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-07-24 12:48:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1100 transitions. [2018-07-24 12:48:38,543 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1100 transitions. Word has length 187 [2018-07-24 12:48:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:38,543 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1100 transitions. [2018-07-24 12:48:38,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:48:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1100 transitions. [2018-07-24 12:48:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 12:48:38,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:38,551 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:38,551 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 12:48:38,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1491408640, now seen corresponding path program 1 times [2018-07-24 12:48:38,552 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:38,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:38,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:38,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:38,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:38,950 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:38,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:38,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:38,957 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:38,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:38,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:38,958 INFO L87 Difference]: Start difference. First operand 739 states and 1100 transitions. Second operand 3 states. [2018-07-24 12:48:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:41,202 INFO L93 Difference]: Finished difference Result 2117 states and 3231 transitions. [2018-07-24 12:48:41,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:41,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-07-24 12:48:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:41,217 INFO L225 Difference]: With dead ends: 2117 [2018-07-24 12:48:41,218 INFO L226 Difference]: Without dead ends: 1384 [2018-07-24 12:48:41,222 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2018-07-24 12:48:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1382. [2018-07-24 12:48:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2018-07-24 12:48:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1971 transitions. [2018-07-24 12:48:41,278 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1971 transitions. Word has length 190 [2018-07-24 12:48:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:41,279 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1971 transitions. [2018-07-24 12:48:41,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1971 transitions. [2018-07-24 12:48:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-24 12:48:41,285 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:41,286 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:48:41,286 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 12:48:41,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1846348452, now seen corresponding path program 1 times [2018-07-24 12:48:41,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:41,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:41,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:41,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:41,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:41,595 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:41,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:41,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:41,596 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:41,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:41,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:41,597 INFO L87 Difference]: Start difference. First operand 1382 states and 1971 transitions. Second operand 3 states. [2018-07-24 12:48:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:43,415 INFO L93 Difference]: Finished difference Result 4039 states and 5932 transitions. [2018-07-24 12:48:43,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:43,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-07-24 12:48:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:43,433 INFO L225 Difference]: With dead ends: 4039 [2018-07-24 12:48:43,434 INFO L226 Difference]: Without dead ends: 2663 [2018-07-24 12:48:43,441 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2018-07-24 12:48:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2647. [2018-07-24 12:48:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2018-07-24 12:48:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3741 transitions. [2018-07-24 12:48:43,589 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3741 transitions. Word has length 192 [2018-07-24 12:48:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:43,589 INFO L471 AbstractCegarLoop]: Abstraction has 2647 states and 3741 transitions. [2018-07-24 12:48:43,589 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3741 transitions. [2018-07-24 12:48:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 12:48:43,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:43,603 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:43,603 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 12:48:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1299369719, now seen corresponding path program 1 times [2018-07-24 12:48:43,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:43,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:43,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:43,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:43,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:44,110 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:44,110 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 12:48:44,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:44,130 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:44,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:48:44,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:45,431 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:48:45,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:48:45,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:45,432 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:48:45,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:48:45,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:48:45,435 INFO L87 Difference]: Start difference. First operand 2647 states and 3741 transitions. Second operand 5 states. [2018-07-24 12:48:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:49,226 INFO L93 Difference]: Finished difference Result 8433 states and 12656 transitions. [2018-07-24 12:48:49,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:48:49,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-07-24 12:48:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:49,272 INFO L225 Difference]: With dead ends: 8433 [2018-07-24 12:48:49,273 INFO L226 Difference]: Without dead ends: 5792 [2018-07-24 12:48:49,292 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:48:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2018-07-24 12:48:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5708. [2018-07-24 12:48:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5708 states. [2018-07-24 12:48:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 8037 transitions. [2018-07-24 12:48:49,492 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 8037 transitions. Word has length 208 [2018-07-24 12:48:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:49,492 INFO L471 AbstractCegarLoop]: Abstraction has 5708 states and 8037 transitions. [2018-07-24 12:48:49,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:48:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 8037 transitions. [2018-07-24 12:48:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 12:48:49,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:49,512 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:49,513 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 12:48:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash 415216045, now seen corresponding path program 1 times [2018-07-24 12:48:49,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:49,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:49,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:49,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:49,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:49,738 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-24 12:48:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:50,090 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:50,090 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 12:48:50,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:50,106 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:50,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:50,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:50,704 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:50,705 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:48:50,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:50,725 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:51,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:51,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:51,666 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:48:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:51,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:48:51,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:48:51,925 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:48:51,928 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:48:51,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:48:51,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:48:51,929 INFO L87 Difference]: Start difference. First operand 5708 states and 8037 transitions. Second operand 9 states. [2018-07-24 12:48:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:55,116 INFO L93 Difference]: Finished difference Result 11821 states and 17144 transitions. [2018-07-24 12:48:55,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:48:55,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2018-07-24 12:48:55,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:55,151 INFO L225 Difference]: With dead ends: 11821 [2018-07-24 12:48:55,152 INFO L226 Difference]: Without dead ends: 6119 [2018-07-24 12:48:55,179 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 831 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:48:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6119 states. [2018-07-24 12:48:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6119 to 6021. [2018-07-24 12:48:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6021 states. [2018-07-24 12:48:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 7901 transitions. [2018-07-24 12:48:55,349 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 7901 transitions. Word has length 210 [2018-07-24 12:48:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:55,349 INFO L471 AbstractCegarLoop]: Abstraction has 6021 states and 7901 transitions. [2018-07-24 12:48:55,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:48:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 7901 transitions. [2018-07-24 12:48:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 12:48:55,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:55,368 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:55,369 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 12:48:55,369 INFO L82 PathProgramCache]: Analyzing trace with hash 523884446, now seen corresponding path program 1 times [2018-07-24 12:48:55,369 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:55,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:55,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:55,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:55,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:55,892 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:55,893 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 12:48:55,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:55,913 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:56,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:56,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:56,683 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:56,683 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 12:48:56,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:56,713 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:57,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:57,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:57,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:48:57,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-07-24 12:48:57,787 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:48:57,788 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:57,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:57,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:48:57,789 INFO L87 Difference]: Start difference. First operand 6021 states and 7901 transitions. Second operand 6 states. [2018-07-24 12:48:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:59,420 INFO L93 Difference]: Finished difference Result 11937 states and 15727 transitions. [2018-07-24 12:48:59,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 12:48:59,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-07-24 12:48:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:59,446 INFO L225 Difference]: With dead ends: 11937 [2018-07-24 12:48:59,447 INFO L226 Difference]: Without dead ends: 5922 [2018-07-24 12:48:59,461 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 856 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:48:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2018-07-24 12:48:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5922. [2018-07-24 12:48:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5922 states. [2018-07-24 12:48:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7630 transitions. [2018-07-24 12:48:59,599 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7630 transitions. Word has length 217 [2018-07-24 12:48:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:59,599 INFO L471 AbstractCegarLoop]: Abstraction has 5922 states and 7630 transitions. [2018-07-24 12:48:59,599 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:48:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7630 transitions. [2018-07-24 12:48:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-24 12:48:59,621 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:59,621 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:59,621 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 12:48:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 826145961, now seen corresponding path program 1 times [2018-07-24 12:48:59,622 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:59,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:59,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:59,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:59,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:00,186 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:49:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:00,441 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:00,441 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 12:49:00,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:00,454 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:00,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:49:00,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:49:00,914 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:49:00,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 12:49:00,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:00,915 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:49:00,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:49:00,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:49:00,916 INFO L87 Difference]: Start difference. First operand 5922 states and 7630 transitions. Second operand 3 states. [2018-07-24 12:49:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:04,367 INFO L93 Difference]: Finished difference Result 17197 states and 22410 transitions. [2018-07-24 12:49:04,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:49:04,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 282 [2018-07-24 12:49:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:04,423 INFO L225 Difference]: With dead ends: 17197 [2018-07-24 12:49:04,423 INFO L226 Difference]: Without dead ends: 11281 [2018-07-24 12:49:04,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 562 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:49:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2018-07-24 12:49:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 11277. [2018-07-24 12:49:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11277 states. [2018-07-24 12:49:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 14294 transitions. [2018-07-24 12:49:04,709 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 14294 transitions. Word has length 282 [2018-07-24 12:49:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:04,709 INFO L471 AbstractCegarLoop]: Abstraction has 11277 states and 14294 transitions. [2018-07-24 12:49:04,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:49:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 14294 transitions. [2018-07-24 12:49:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-24 12:49:04,757 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:04,757 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:49:04,757 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 12:49:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2100439510, now seen corresponding path program 1 times [2018-07-24 12:49:04,758 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:04,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:04,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:04,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:04,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 154 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:05,382 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:05,382 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) [2018-07-24 12:49:05,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:05,398 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:05,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 12:49:05,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:49:06,085 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:49:06,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-07-24 12:49:06,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:06,086 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:49:06,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:49:06,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:49:06,087 INFO L87 Difference]: Start difference. First operand 11277 states and 14294 transitions. Second operand 3 states. [2018-07-24 12:49:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:07,268 INFO L93 Difference]: Finished difference Result 22546 states and 28584 transitions. [2018-07-24 12:49:07,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:49:07,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2018-07-24 12:49:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:07,307 INFO L225 Difference]: With dead ends: 22546 [2018-07-24 12:49:07,307 INFO L226 Difference]: Without dead ends: 11275 [2018-07-24 12:49:07,328 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:49:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2018-07-24 12:49:07,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11275. [2018-07-24 12:49:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11275 states. [2018-07-24 12:49:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 14290 transitions. [2018-07-24 12:49:07,564 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 14290 transitions. Word has length 332 [2018-07-24 12:49:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:07,565 INFO L471 AbstractCegarLoop]: Abstraction has 11275 states and 14290 transitions. [2018-07-24 12:49:07,565 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:49:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 14290 transitions. [2018-07-24 12:49:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-24 12:49:07,614 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:07,614 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:49:07,615 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 12:49:07,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1452400975, now seen corresponding path program 1 times [2018-07-24 12:49:07,615 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:07,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:07,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:07,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:07,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:07,987 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:49:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 158 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:49:08,352 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:08,352 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:08,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:08,366 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:08,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:09,585 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-07-24 12:49:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:49:09,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 152 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:49:10,333 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:49:10,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2018-07-24 12:49:10,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:10,334 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:49:10,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:49:10,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:49:10,334 INFO L87 Difference]: Start difference. First operand 11275 states and 14290 transitions. Second operand 6 states. [2018-07-24 12:49:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:12,671 INFO L93 Difference]: Finished difference Result 23687 states and 31207 transitions. [2018-07-24 12:49:12,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:49:12,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2018-07-24 12:49:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:12,735 INFO L225 Difference]: With dead ends: 23687 [2018-07-24 12:49:12,735 INFO L226 Difference]: Without dead ends: 12240 [2018-07-24 12:49:12,768 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 672 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:49:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12240 states. [2018-07-24 12:49:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12240 to 11670. [2018-07-24 12:49:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11670 states. [2018-07-24 12:49:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 14721 transitions. [2018-07-24 12:49:13,114 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 14721 transitions. Word has length 340 [2018-07-24 12:49:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:13,115 INFO L471 AbstractCegarLoop]: Abstraction has 11670 states and 14721 transitions. [2018-07-24 12:49:13,115 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:49:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 14721 transitions. [2018-07-24 12:49:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-24 12:49:13,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:13,149 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-24 12:49:13,150 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 12:49:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash 539656482, now seen corresponding path program 1 times [2018-07-24 12:49:13,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:13,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:13,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:13,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:13,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 156 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:49:13,992 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:13,992 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 12:49:14,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:14,012 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:14,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:49:14,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 156 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:49:14,953 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:49:14,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:49:14,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:14,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:49:14,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:49:14,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:49:14,955 INFO L87 Difference]: Start difference. First operand 11670 states and 14721 transitions. Second operand 5 states. [2018-07-24 12:49:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:17,106 INFO L93 Difference]: Finished difference Result 23633 states and 30181 transitions. [2018-07-24 12:49:17,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:49:17,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2018-07-24 12:49:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:17,151 INFO L225 Difference]: With dead ends: 23633 [2018-07-24 12:49:17,152 INFO L226 Difference]: Without dead ends: 11969 [2018-07-24 12:49:17,172 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 679 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:49:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11969 states. [2018-07-24 12:49:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11969 to 11791. [2018-07-24 12:49:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11791 states. [2018-07-24 12:49:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11791 states to 11791 states and 14560 transitions. [2018-07-24 12:49:17,426 INFO L78 Accepts]: Start accepts. Automaton has 11791 states and 14560 transitions. Word has length 342 [2018-07-24 12:49:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:17,427 INFO L471 AbstractCegarLoop]: Abstraction has 11791 states and 14560 transitions. [2018-07-24 12:49:17,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:49:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11791 states and 14560 transitions. [2018-07-24 12:49:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-24 12:49:17,453 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:17,453 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:17,454 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1377682562, now seen corresponding path program 1 times [2018-07-24 12:49:17,454 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:17,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:17,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 12:49:18,168 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:18,168 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:18,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:18,189 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:18,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:49:19,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 12:49:19,306 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:19,306 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:19,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:19,328 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:20,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:49:20,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 191 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 12:49:20,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:20,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:49:20,334 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:20,335 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:49:20,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:49:20,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:49:20,335 INFO L87 Difference]: Start difference. First operand 11791 states and 14560 transitions. Second operand 9 states. [2018-07-24 12:49:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:24,705 INFO L93 Difference]: Finished difference Result 27289 states and 34906 transitions. [2018-07-24 12:49:24,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:49:24,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2018-07-24 12:49:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:24,756 INFO L225 Difference]: With dead ends: 27289 [2018-07-24 12:49:24,757 INFO L226 Difference]: Without dead ends: 15321 [2018-07-24 12:49:24,786 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1428 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:49:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15321 states. [2018-07-24 12:49:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15321 to 15263. [2018-07-24 12:49:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15263 states. [2018-07-24 12:49:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15263 states to 15263 states and 19197 transitions. [2018-07-24 12:49:25,142 INFO L78 Accepts]: Start accepts. Automaton has 15263 states and 19197 transitions. Word has length 357 [2018-07-24 12:49:25,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:25,142 INFO L471 AbstractCegarLoop]: Abstraction has 15263 states and 19197 transitions. [2018-07-24 12:49:25,142 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:49:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 15263 states and 19197 transitions. [2018-07-24 12:49:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-24 12:49:25,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:25,193 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:49:25,193 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1536553133, now seen corresponding path program 1 times [2018-07-24 12:49:25,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:25,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:25,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:25,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:25,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:25,688 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:49:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 181 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:49:26,025 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:26,025 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:26,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:26,033 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:26,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:26,646 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 197 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:26,838 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:26,838 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:26,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:26,854 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:27,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 12:49:28,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 183 proven. 75 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-24 12:49:28,303 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:49:28,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5, 5, 5] total 21 [2018-07-24 12:49:28,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:28,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:49:28,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:49:28,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:49:28,305 INFO L87 Difference]: Start difference. First operand 15263 states and 19197 transitions. Second operand 5 states. [2018-07-24 12:49:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:29,182 INFO L93 Difference]: Finished difference Result 45295 states and 58983 transitions. [2018-07-24 12:49:29,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:49:29,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2018-07-24 12:49:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:29,313 INFO L225 Difference]: With dead ends: 45295 [2018-07-24 12:49:29,314 INFO L226 Difference]: Without dead ends: 30078 [2018-07-24 12:49:29,363 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1432 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:49:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30078 states. [2018-07-24 12:49:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30078 to 29536. [2018-07-24 12:49:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29536 states. [2018-07-24 12:49:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29536 states to 29536 states and 37085 transitions. [2018-07-24 12:49:30,096 INFO L78 Accepts]: Start accepts. Automaton has 29536 states and 37085 transitions. Word has length 361 [2018-07-24 12:49:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:30,097 INFO L471 AbstractCegarLoop]: Abstraction has 29536 states and 37085 transitions. [2018-07-24 12:49:30,097 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:49:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 29536 states and 37085 transitions. [2018-07-24 12:49:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-24 12:49:30,154 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:30,155 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:49:30,155 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:30,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1388191774, now seen corresponding path program 1 times [2018-07-24 12:49:30,155 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:30,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:30,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:30,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:30,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 258 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:49:30,844 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:30,844 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:30,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:30,858 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:31,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:49:31,617 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:49:31,848 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:31,848 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:31,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:31,864 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:32,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:49:32,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 260 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:49:33,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:33,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 12:49:33,089 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:33,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:49:33,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:49:33,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:49:33,091 INFO L87 Difference]: Start difference. First operand 29536 states and 37085 transitions. Second operand 9 states. [2018-07-24 12:49:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:45,029 INFO L93 Difference]: Finished difference Result 192043 states and 282934 transitions. [2018-07-24 12:49:45,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 12:49:45,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 362 [2018-07-24 12:49:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:45,952 INFO L225 Difference]: With dead ends: 192043 [2018-07-24 12:49:45,952 INFO L226 Difference]: Without dead ends: 162513 [2018-07-24 12:49:46,139 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1453 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=1206, Unknown=0, NotChecked=0, Total=1482 [2018-07-24 12:49:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162513 states. [2018-07-24 12:49:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162513 to 150574. [2018-07-24 12:49:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150574 states. [2018-07-24 12:49:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150574 states to 150574 states and 192081 transitions. [2018-07-24 12:49:51,937 INFO L78 Accepts]: Start accepts. Automaton has 150574 states and 192081 transitions. Word has length 362 [2018-07-24 12:49:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:51,937 INFO L471 AbstractCegarLoop]: Abstraction has 150574 states and 192081 transitions. [2018-07-24 12:49:51,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:49:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 150574 states and 192081 transitions. [2018-07-24 12:49:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-24 12:49:52,256 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:52,257 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:49:52,257 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:52,257 INFO L82 PathProgramCache]: Analyzing trace with hash 933587522, now seen corresponding path program 1 times [2018-07-24 12:49:52,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:52,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:52,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:52,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:52,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:52,919 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:52,919 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:52,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:52,935 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:53,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:53,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:53,425 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:53,426 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:53,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:53,441 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:54,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:54,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 12:49:55,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:55,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 7 [2018-07-24 12:49:55,370 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:55,370 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:49:55,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:49:55,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:49:55,371 INFO L87 Difference]: Start difference. First operand 150574 states and 192081 transitions. Second operand 6 states. [2018-07-24 12:50:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:50:02,812 INFO L93 Difference]: Finished difference Result 314185 states and 424403 transitions. [2018-07-24 12:50:02,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:50:02,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 364 [2018-07-24 12:50:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:50:02,815 INFO L225 Difference]: With dead ends: 314185 [2018-07-24 12:50:02,815 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 12:50:04,657 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1458 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:50:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 12:50:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 12:50:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 12:50:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 12:50:04,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 364 [2018-07-24 12:50:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:50:04,661 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 12:50:04,661 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:50:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 12:50:04,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 12:50:04,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 12:50:06,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,464 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:06,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:07,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:08,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:08,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:09,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,788 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:10,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:11,152 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:11,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:11,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:12,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:12,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:14,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:14,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:14,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:15,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:15,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:15,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:15,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:15,568 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:16,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:17,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:18,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:18,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:18,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:18,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:19,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:19,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:19,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:20,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:20,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:20,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:20,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:21,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:21,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:21,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:22,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:22,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:22,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:24,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:24,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:24,568 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:25,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:25,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:25,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:26,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:26,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:28,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:28,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:29,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:29,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:29,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:29,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:30,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:30,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:31,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:32,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:32,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:32,617 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:32,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:33,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:33,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:33,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:33,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:34,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:34,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:34,922 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:35,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:35,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:36,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:37,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:37,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:37,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:37,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:37,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:38,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:38,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:39,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:39,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:39,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:39,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:41,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:41,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:41,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:42,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:43,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:43,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:44,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:46,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:47,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:48,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:49,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:49,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:49,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:49,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:50,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:50,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:50,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:50,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:51,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:51,884 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:52,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:52,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:52,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:53,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:53,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:53,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:55,653 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:55,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:55,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:56,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:58,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:50:59,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:00,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:00,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:02,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:05,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:06,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:06,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:06,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:06,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:07,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:08,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:10,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:10,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:10,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:12,628 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:13,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:13,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,555 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:14,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:15,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:15,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:16,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:16,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:16,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:17,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:17,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:17,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:17,721 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:17,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:18,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:19,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:19,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:19,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:19,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:20,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:20,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:20,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:21,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:21,520 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:21,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:21,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:22,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:22,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:23,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:24,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:25,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:26,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:26,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:27,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:28,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:28,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:29,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:30,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:30,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:32,335 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:32,569 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:32,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:32,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:32,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:33,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:34,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:35,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:36,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:38,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:38,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:40,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:41,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:41,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:42,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:44,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:44,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:44,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:47,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:48,707 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:48,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:49,295 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:49,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:50,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:51,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:51,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:53,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:53,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:54,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:54,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:54,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:55,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:55,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:56,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:56,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:57,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:58,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:58,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:58,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:59,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:51:59,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:00,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:01,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:01,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:01,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:02,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:02,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:03,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:03,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:04,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:04,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:04,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:52:04,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-07-24 12:52:11,058 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 12:52:11,059 INFO L168 Benchmark]: Toolchain (without parser) took 227594.80 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -492.9 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,060 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:52:11,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1400.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 174.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,063 INFO L168 Benchmark]: Boogie Preprocessor took 384.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -926.5 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,064 INFO L168 Benchmark]: RCFGBuilder took 5430.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 282.3 MB). Peak memory consumption was 282.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,064 INFO L168 Benchmark]: TraceAbstraction took 220198.65 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 56.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:52:11,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1400.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 174.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 384.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -926.5 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5430.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 282.3 MB). Peak memory consumption was 282.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220198.65 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 56.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1545]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 5313. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-52-11-082.csv Completed graceful shutdown