java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:11:50,351 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:11:50,353 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:11:50,368 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:11:50,368 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:11:50,370 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:11:50,371 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:11:50,374 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:11:50,377 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:11:50,383 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:11:50,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:11:50,388 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:11:50,389 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:11:50,390 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:11:50,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:11:50,397 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:11:50,398 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:11:50,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:11:50,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:11:50,405 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:11:50,406 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:11:50,407 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:11:50,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:11:50,410 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:11:50,410 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:11:50,411 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:11:50,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:11:50,412 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:11:50,415 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:11:50,416 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:11:50,416 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:11:50,417 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:11:50,417 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:11:50,417 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:11:50,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:11:50,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:11:50,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:11:50,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:11:50,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:11:50,453 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:11:50,453 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:11:50,453 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:11:50,456 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:11:50,456 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:11:50,457 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:11:50,457 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:11:50,457 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:11:50,457 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:11:50,458 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:11:50,459 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:11:50,459 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:11:50,459 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:11:50,460 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:11:50,460 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:11:50,460 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:11:50,460 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:11:50,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:11:50,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:11:50,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:11:50,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:11:50,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:11:50,463 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:11:50,463 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:11:50,463 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:11:50,463 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:11:50,464 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:11:50,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:11:50,464 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:11:50,464 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:11:50,465 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:11:50,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:11:50,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:11:50,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:11:50,570 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:11:50,570 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:11:50,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-07-24 14:11:50,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e099d4500/33f61551dbe547d69ab947a6490e0612/FLAGa976dc1ba [2018-07-24 14:11:51,441 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:11:51,442 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-07-24 14:11:51,479 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e099d4500/33f61551dbe547d69ab947a6490e0612/FLAGa976dc1ba [2018-07-24 14:11:51,501 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e099d4500/33f61551dbe547d69ab947a6490e0612 [2018-07-24 14:11:51,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:11:51,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:11:51,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:51,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:11:51,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:11:51,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:51" (1/1) ... [2018-07-24 14:11:51,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5fbdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:51, skipping insertion in model container [2018-07-24 14:11:51,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:51" (1/1) ... [2018-07-24 14:11:51,881 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:11:52,926 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:52,943 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:11:53,640 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:53,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53 WrapperNode [2018-07-24 14:11:53,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:53,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:53,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:11:53,876 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:11:53,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:53,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:54,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:11:54,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:11:54,138 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:11:54,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... [2018-07-24 14:11:54,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:11:54,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:11:54,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:11:54,973 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:11:54,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:11:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:11:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:11:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:11:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:11:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:11:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:11:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:11:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:11:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:11:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:11:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:11:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:11:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:11:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:12:08,261 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:12:08,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:12:08 BoogieIcfgContainer [2018-07-24 14:12:08,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:12:08,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:12:08,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:12:08,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:12:08,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:11:51" (1/3) ... [2018-07-24 14:12:08,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a8f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:12:08, skipping insertion in model container [2018-07-24 14:12:08,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:53" (2/3) ... [2018-07-24 14:12:08,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a8f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:12:08, skipping insertion in model container [2018-07-24 14:12:08,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:12:08" (3/3) ... [2018-07-24 14:12:08,270 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-07-24 14:12:08,280 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:12:08,289 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:12:08,354 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:12:08,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:12:08,355 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:12:08,355 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:12:08,355 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:12:08,355 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:12:08,355 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:12:08,356 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:12:08,356 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:12:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:12:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-24 14:12:08,413 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:08,415 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] [2018-07-24 14:12:08,418 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1439966015, now seen corresponding path program 1 times [2018-07-24 14:12:08,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:08,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:08,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:08,918 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:08,969 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:08,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:12:08,970 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:08,975 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:12:08,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:12:08,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:12:08,994 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:12:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:16,818 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:12:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:12:16,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-07-24 14:12:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:16,857 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:12:16,858 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:12:16,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:12:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:12:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:12:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:12:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-07-24 14:12:17,037 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 59 [2018-07-24 14:12:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:17,038 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-07-24 14:12:17,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:12:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-07-24 14:12:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-24 14:12:17,047 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:17,047 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:17,047 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash 713291070, now seen corresponding path program 1 times [2018-07-24 14:12:17,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:17,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:17,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:17,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:17,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:17,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:17,653 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:12:17,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:17,671 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:17,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:18,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:18,715 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:18,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-07-24 14:12:18,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:18,717 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:18,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:18,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:18,719 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-07-24 14:12:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:29,647 INFO L93 Difference]: Finished difference Result 4760 states and 8592 transitions. [2018-07-24 14:12:29,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:29,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-07-24 14:12:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:29,668 INFO L225 Difference]: With dead ends: 4760 [2018-07-24 14:12:29,668 INFO L226 Difference]: Without dead ends: 3162 [2018-07-24 14:12:29,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 269 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2018-07-24 14:12:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2018-07-24 14:12:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2018-07-24 14:12:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5219 transitions. [2018-07-24 14:12:29,779 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5219 transitions. Word has length 135 [2018-07-24 14:12:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:29,780 INFO L471 AbstractCegarLoop]: Abstraction has 3162 states and 5219 transitions. [2018-07-24 14:12:29,782 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:12:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5219 transitions. [2018-07-24 14:12:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-24 14:12:29,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:29,793 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:29,793 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1000501466, now seen corresponding path program 1 times [2018-07-24 14:12:29,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:29,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:29,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:29,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:29,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:30,150 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:30,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:12:30,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:30,151 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:30,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:30,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:12:30,152 INFO L87 Difference]: Start difference. First operand 3162 states and 5219 transitions. Second operand 5 states. [2018-07-24 14:12:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:48,955 INFO L93 Difference]: Finished difference Result 12604 states and 21226 transitions. [2018-07-24 14:12:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:12:48,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-07-24 14:12:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:49,015 INFO L225 Difference]: With dead ends: 12604 [2018-07-24 14:12:49,016 INFO L226 Difference]: Without dead ends: 9448 [2018-07-24 14:12:49,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:12:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2018-07-24 14:12:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 9397. [2018-07-24 14:12:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2018-07-24 14:12:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 14204 transitions. [2018-07-24 14:12:49,326 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 14204 transitions. Word has length 155 [2018-07-24 14:12:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:49,327 INFO L471 AbstractCegarLoop]: Abstraction has 9397 states and 14204 transitions. [2018-07-24 14:12:49,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 14204 transitions. [2018-07-24 14:12:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-24 14:12:49,336 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:49,336 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:49,336 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash 679165469, now seen corresponding path program 1 times [2018-07-24 14:12:49,337 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:49,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:49,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:49,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:49,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:49,637 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:49,801 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:49,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:12:49,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:49,802 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:12:49,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:12:49,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:12:49,802 INFO L87 Difference]: Start difference. First operand 9397 states and 14204 transitions. Second operand 6 states. [2018-07-24 14:12:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:58,252 INFO L93 Difference]: Finished difference Result 23920 states and 37959 transitions. [2018-07-24 14:12:58,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:12:58,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-07-24 14:12:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:58,322 INFO L225 Difference]: With dead ends: 23920 [2018-07-24 14:12:58,323 INFO L226 Difference]: Without dead ends: 14529 [2018-07-24 14:12:58,349 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:12:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14529 states. [2018-07-24 14:12:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14529 to 14360. [2018-07-24 14:12:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14360 states. [2018-07-24 14:12:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14360 states to 14360 states and 21289 transitions. [2018-07-24 14:12:58,686 INFO L78 Accepts]: Start accepts. Automaton has 14360 states and 21289 transitions. Word has length 170 [2018-07-24 14:12:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:58,686 INFO L471 AbstractCegarLoop]: Abstraction has 14360 states and 21289 transitions. [2018-07-24 14:12:58,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:12:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 14360 states and 21289 transitions. [2018-07-24 14:12:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-24 14:12:58,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:58,693 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:12:58,693 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:58,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1454273110, now seen corresponding path program 1 times [2018-07-24 14:12:58,693 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:58,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:58,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:58,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:58,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:58,971 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:59,387 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:59,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:12:59,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:59,388 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:12:59,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:12:59,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:12:59,390 INFO L87 Difference]: Start difference. First operand 14360 states and 21289 transitions. Second operand 6 states. [2018-07-24 14:13:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:07,776 INFO L93 Difference]: Finished difference Result 33782 states and 51810 transitions. [2018-07-24 14:13:07,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:13:07,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-07-24 14:13:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:07,848 INFO L225 Difference]: With dead ends: 33782 [2018-07-24 14:13:07,848 INFO L226 Difference]: Without dead ends: 19428 [2018-07-24 14:13:07,887 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:13:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19428 states. [2018-07-24 14:13:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19428 to 19275. [2018-07-24 14:13:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19275 states. [2018-07-24 14:13:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19275 states to 19275 states and 27596 transitions. [2018-07-24 14:13:08,303 INFO L78 Accepts]: Start accepts. Automaton has 19275 states and 27596 transitions. Word has length 173 [2018-07-24 14:13:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:08,304 INFO L471 AbstractCegarLoop]: Abstraction has 19275 states and 27596 transitions. [2018-07-24 14:13:08,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:13:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 19275 states and 27596 transitions. [2018-07-24 14:13:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 14:13:08,313 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:08,313 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:08,313 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1968577591, now seen corresponding path program 1 times [2018-07-24 14:13:08,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:08,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:08,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:08,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:08,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:08,594 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:08,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:13:08,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:08,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:13:08,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:13:08,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:08,596 INFO L87 Difference]: Start difference. First operand 19275 states and 27596 transitions. Second operand 4 states. [2018-07-24 14:13:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:20,605 INFO L93 Difference]: Finished difference Result 71894 states and 110791 transitions. [2018-07-24 14:13:20,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:13:20,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-07-24 14:13:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:20,829 INFO L225 Difference]: With dead ends: 71894 [2018-07-24 14:13:20,829 INFO L226 Difference]: Without dead ends: 52625 [2018-07-24 14:13:20,901 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52625 states. [2018-07-24 14:13:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52625 to 52617. [2018-07-24 14:13:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52617 states. [2018-07-24 14:13:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52617 states to 52617 states and 77995 transitions. [2018-07-24 14:13:22,081 INFO L78 Accepts]: Start accepts. Automaton has 52617 states and 77995 transitions. Word has length 208 [2018-07-24 14:13:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:22,082 INFO L471 AbstractCegarLoop]: Abstraction has 52617 states and 77995 transitions. [2018-07-24 14:13:22,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:13:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52617 states and 77995 transitions. [2018-07-24 14:13:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-24 14:13:22,107 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:22,107 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:22,107 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:22,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1286549481, now seen corresponding path program 1 times [2018-07-24 14:13:22,108 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:22,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:22,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:22,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:22,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:22,399 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:13:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 104 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:22,803 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:22,803 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:22,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:22,816 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:22,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:13:23,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 104 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:24,530 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:24,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:13:24,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:24,531 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:24,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:24,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:13:24,532 INFO L87 Difference]: Start difference. First operand 52617 states and 77995 transitions. Second operand 5 states. [2018-07-24 14:13:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:35,606 INFO L93 Difference]: Finished difference Result 136353 states and 215690 transitions. [2018-07-24 14:13:35,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:13:35,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-07-24 14:13:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:35,953 INFO L225 Difference]: With dead ends: 136353 [2018-07-24 14:13:35,953 INFO L226 Difference]: Without dead ends: 83742 [2018-07-24 14:13:36,172 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 444 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:13:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83742 states. [2018-07-24 14:13:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83742 to 83366. [2018-07-24 14:13:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83366 states. [2018-07-24 14:13:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83366 states to 83366 states and 118851 transitions. [2018-07-24 14:13:37,805 INFO L78 Accepts]: Start accepts. Automaton has 83366 states and 118851 transitions. Word has length 225 [2018-07-24 14:13:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:37,806 INFO L471 AbstractCegarLoop]: Abstraction has 83366 states and 118851 transitions. [2018-07-24 14:13:37,806 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 83366 states and 118851 transitions. [2018-07-24 14:13:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-24 14:13:37,863 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:37,864 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:37,864 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:37,864 INFO L82 PathProgramCache]: Analyzing trace with hash -490803023, now seen corresponding path program 1 times [2018-07-24 14:13:37,864 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:37,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:37,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:37,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:37,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:38,498 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:38,498 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:38,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:38,515 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:38,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:38,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:38,964 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:38,964 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:13:39,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:39,000 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:39,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:40,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:40,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:13:40,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 14:13:40,377 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:13:40,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:13:40,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:13:40,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:13:40,379 INFO L87 Difference]: Start difference. First operand 83366 states and 118851 transitions. Second operand 9 states. [2018-07-24 14:14:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:16,468 INFO L93 Difference]: Finished difference Result 221656 states and 415171 transitions. [2018-07-24 14:14:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-24 14:14:16,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 285 [2018-07-24 14:14:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:17,359 INFO L225 Difference]: With dead ends: 221656 [2018-07-24 14:14:17,359 INFO L226 Difference]: Without dead ends: 138296 [2018-07-24 14:14:18,806 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1167 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=646, Invalid=2776, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 14:14:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138296 states. [2018-07-24 14:14:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138296 to 130669. [2018-07-24 14:14:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130669 states. [2018-07-24 14:14:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130669 states to 130669 states and 185056 transitions. [2018-07-24 14:14:24,180 INFO L78 Accepts]: Start accepts. Automaton has 130669 states and 185056 transitions. Word has length 285 [2018-07-24 14:14:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:24,180 INFO L471 AbstractCegarLoop]: Abstraction has 130669 states and 185056 transitions. [2018-07-24 14:14:24,181 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:14:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 130669 states and 185056 transitions. [2018-07-24 14:14:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-24 14:14:24,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:24,219 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:24,219 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2117184616, now seen corresponding path program 1 times [2018-07-24 14:14:24,220 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:24,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:24,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:24,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:24,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:14:24,752 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:14:24,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:14:24,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:24,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:14:24,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:14:24,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:14:24,754 INFO L87 Difference]: Start difference. First operand 130669 states and 185056 transitions. Second operand 5 states. [2018-07-24 14:14:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:36,683 INFO L93 Difference]: Finished difference Result 381009 states and 562458 transitions. [2018-07-24 14:14:36,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:14:36,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-07-24 14:14:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:37,712 INFO L225 Difference]: With dead ends: 381009 [2018-07-24 14:14:37,713 INFO L226 Difference]: Without dead ends: 250346 [2018-07-24 14:14:38,046 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:14:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250346 states. [2018-07-24 14:14:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250346 to 248661. [2018-07-24 14:14:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248661 states. [2018-07-24 14:14:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248661 states to 248661 states and 338070 transitions. [2018-07-24 14:14:45,434 INFO L78 Accepts]: Start accepts. Automaton has 248661 states and 338070 transitions. Word has length 286 [2018-07-24 14:14:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:45,436 INFO L471 AbstractCegarLoop]: Abstraction has 248661 states and 338070 transitions. [2018-07-24 14:14:45,436 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:14:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 248661 states and 338070 transitions. [2018-07-24 14:14:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 14:14:45,451 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:45,452 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:45,452 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 8004667, now seen corresponding path program 1 times [2018-07-24 14:14:45,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:45,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:45,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,454 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:46,997 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:14:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:14:47,486 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:47,486 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:47,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:47,505 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:47,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:47,747 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:47,946 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:47,946 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:47,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:47,961 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:48,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 14:14:48,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 14:14:48,513 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:14:48,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 14:14:48,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:48,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:14:48,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:14:48,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:14:48,515 INFO L87 Difference]: Start difference. First operand 248661 states and 338070 transitions. Second operand 5 states. [2018-07-24 14:15:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:04,966 INFO L93 Difference]: Finished difference Result 494115 states and 674912 transitions. [2018-07-24 14:15:04,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:15:04,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-07-24 14:15:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:05,878 INFO L225 Difference]: With dead ends: 494115 [2018-07-24 14:15:05,878 INFO L226 Difference]: Without dead ends: 245460 [2018-07-24 14:15:06,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1218 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:15:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245460 states. [2018-07-24 14:15:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245460 to 241523. [2018-07-24 14:15:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241523 states. [2018-07-24 14:15:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241523 states to 241523 states and 297973 transitions. [2018-07-24 14:15:11,449 INFO L78 Accepts]: Start accepts. Automaton has 241523 states and 297973 transitions. Word has length 307 [2018-07-24 14:15:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:11,450 INFO L471 AbstractCegarLoop]: Abstraction has 241523 states and 297973 transitions. [2018-07-24 14:15:11,450 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:15:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 241523 states and 297973 transitions. [2018-07-24 14:15:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-24 14:15:11,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:11,462 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:11,463 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 150405722, now seen corresponding path program 1 times [2018-07-24 14:15:11,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:11,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:11,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 14:15:11,773 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:11,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:15:11,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:11,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:15:11,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:15:11,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:15:11,774 INFO L87 Difference]: Start difference. First operand 241523 states and 297973 transitions. Second operand 4 states. [2018-07-24 14:15:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:23,372 INFO L93 Difference]: Finished difference Result 470285 states and 582374 transitions. [2018-07-24 14:15:23,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:15:23,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2018-07-24 14:15:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:23,834 INFO L225 Difference]: With dead ends: 470285 [2018-07-24 14:15:23,834 INFO L226 Difference]: Without dead ends: 190673 [2018-07-24 14:15:24,342 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:15:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190673 states. [2018-07-24 14:15:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190673 to 185494. [2018-07-24 14:15:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185494 states. [2018-07-24 14:15:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185494 states to 185494 states and 212916 transitions. [2018-07-24 14:15:27,959 INFO L78 Accepts]: Start accepts. Automaton has 185494 states and 212916 transitions. Word has length 310 [2018-07-24 14:15:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:27,960 INFO L471 AbstractCegarLoop]: Abstraction has 185494 states and 212916 transitions. [2018-07-24 14:15:27,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:15:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 185494 states and 212916 transitions. [2018-07-24 14:15:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-07-24 14:15:27,988 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:27,989 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:27,989 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 14:15:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 627213583, now seen corresponding path program 1 times [2018-07-24 14:15:27,989 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:27,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:27,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:27,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:27,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 192 proven. 139 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-07-24 14:15:28,701 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:28,702 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:15:28,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:28,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:28,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:15:29,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 243 proven. 83 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-07-24 14:15:30,191 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:30,192 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:15:30,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:30,208 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:30,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:15:30,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 243 proven. 83 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-07-24 14:15:31,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:15:31,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 17 [2018-07-24 14:15:31,165 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:15:31,167 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 14:15:31,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 14:15:31,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:15:31,167 INFO L87 Difference]: Start difference. First operand 185494 states and 212916 transitions. Second operand 14 states. Received shutdown request... [2018-07-24 14:15:31,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:15:31,754 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:15:31,760 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:15:31,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:15:31 BoogieIcfgContainer [2018-07-24 14:15:31,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:15:31,761 INFO L168 Benchmark]: Toolchain (without parser) took 220246.70 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -140.6 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,762 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:15:31,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2357.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 261.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,764 INFO L168 Benchmark]: Boogie Preprocessor took 834.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,765 INFO L168 Benchmark]: RCFGBuilder took 13289.08 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -115.3 MB). Peak memory consumption was 741.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,766 INFO L168 Benchmark]: TraceAbstraction took 203497.88 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.5 GB in the beginning and 1.6 GB in the end (delta: 906.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:31,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2357.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 261.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 834.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13289.08 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -115.3 MB). Peak memory consumption was 741.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203497.88 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.5 GB in the beginning and 1.6 GB in the end (delta: 906.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while BasicCegarLoop was constructing difference of abstraction (185494states) and interpolant automaton (currently 6 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (184 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 161.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2910 SDtfs, 33105 SDslu, 2115 SDs, 0 SdLazy, 69906 SolverSat, 15552 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 111.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5234 GetRequests, 5079 SyntacticMatches, 25 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248661occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 25.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 19185 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 5333 NumberOfCodeBlocks, 5333 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7833 ConstructedInterpolants, 0 QuantifiedInterpolants, 7361540 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4277 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 4999/5579 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-15-31-784.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-15-31-784.csv Completed graceful shutdown