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/Problem11_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:59:56,491 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:59:56,493 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:59:56,505 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:59:56,505 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:59:56,506 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:59:56,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:59:56,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:59:56,511 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:59:56,512 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:59:56,513 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:59:56,513 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:59:56,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:59:56,515 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:59:56,516 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:59:56,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:59:56,518 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:59:56,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:59:56,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:59:56,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:59:56,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:59:56,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:59:56,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:59:56,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:59:56,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:59:56,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:59:56,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:59:56,531 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:59:56,532 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:59:56,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:59:56,534 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:59:56,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:59:56,535 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:59:56,535 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:59:56,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:59:56,537 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:59:56,537 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 13:59:56,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:59:56,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:59:56,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:59:56,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:59:56,554 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:59:56,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:59:56,554 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:59:56,554 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:59:56,555 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:59:56,555 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:59:56,555 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:59:56,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:59:56,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:59:56,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:59:56,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:59:56,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:59:56,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:59:56,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:59:56,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:59:56,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:59:56,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:59:56,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:59:56,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:59:56,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:59:56,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:59:56,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:59:56,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:59:56,559 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:59:56,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:59:56,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:59:56,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:59:56,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:59:56,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:59:56,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:59:56,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:59:56,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:59:56,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:59:56,626 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:59:56,627 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-07-24 13:59:56,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b22ac95/9386cb55a5414b9d971b6580f464ba84/FLAG54ce4ac11 [2018-07-24 13:59:57,249 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:59:57,250 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-07-24 13:59:57,280 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b22ac95/9386cb55a5414b9d971b6580f464ba84/FLAG54ce4ac11 [2018-07-24 13:59:57,299 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b22ac95/9386cb55a5414b9d971b6580f464ba84 [2018-07-24 13:59:57,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:59:57,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:59:57,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:59:57,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:59:57,327 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:59:57,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:59:57" (1/1) ... [2018-07-24 13:59:57,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251755e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:57, skipping insertion in model container [2018-07-24 13:59:57,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:59:57" (1/1) ... [2018-07-24 13:59:57,612 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:59:57,982 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:59:58,002 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:59:58,187 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:59:58,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58 WrapperNode [2018-07-24 13:59:58,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:59:58,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:59:58,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:59:58,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:59:58,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:59:58,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:59:58,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:59:58,401 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:59:58,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (1/1) ... [2018-07-24 13:59:58,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:59:58,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:59:58,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:59:58,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:59:58,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (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 13:59:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:59:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:59:58,856 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 13:59:58,857 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 13:59:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:59:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:59:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:59:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:00:04,383 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:00:04,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:00:04 BoogieIcfgContainer [2018-07-24 14:00:04,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:00:04,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:00:04,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:00:04,389 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:00:04,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:59:57" (1/3) ... [2018-07-24 14:00:04,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e0de7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:00:04, skipping insertion in model container [2018-07-24 14:00:04,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:59:58" (2/3) ... [2018-07-24 14:00:04,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e0de7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:00:04, skipping insertion in model container [2018-07-24 14:00:04,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:00:04" (3/3) ... [2018-07-24 14:00:04,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24_true-unreach-call.c [2018-07-24 14:00:04,403 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:00:04,412 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:00:04,468 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:00:04,469 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:00:04,469 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:00:04,469 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:00:04,469 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:00:04,470 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:00:04,470 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:00:04,470 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:00:04,470 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:00:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-24 14:00:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-24 14:00:04,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:04,510 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] [2018-07-24 14:00:04,510 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 14:00:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1684659980, now seen corresponding path program 1 times [2018-07-24 14:00:04,518 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:04,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:04,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:04,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:04,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:05,018 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 14:00:05,023 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:00:05,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:00:05,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:05,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:00:05,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:00:05,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:00:05,052 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-07-24 14:00:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:08,420 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-07-24 14:00:08,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:00:08,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-07-24 14:00:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:08,445 INFO L225 Difference]: With dead ends: 982 [2018-07-24 14:00:08,445 INFO L226 Difference]: Without dead ends: 683 [2018-07-24 14:00:08,459 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 14:00:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-07-24 14:00:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-07-24 14:00:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-24 14:00:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-07-24 14:00:08,562 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 58 [2018-07-24 14:00:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:08,563 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-07-24 14:00:08,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:00:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-07-24 14:00:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 14:00:08,571 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:08,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:08,572 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 14:00:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash -704139656, now seen corresponding path program 1 times [2018-07-24 14:00:08,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:08,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:08,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:08,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:08,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:09,105 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:00:09,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 14:00:09,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:09,107 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:00:09,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:00:09,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:00:09,108 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-07-24 14:00:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:16,139 INFO L93 Difference]: Finished difference Result 1980 states and 3018 transitions. [2018-07-24 14:00:16,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:00:16,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2018-07-24 14:00:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:16,153 INFO L225 Difference]: With dead ends: 1980 [2018-07-24 14:00:16,153 INFO L226 Difference]: Without dead ends: 1303 [2018-07-24 14:00:16,159 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:00:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2018-07-24 14:00:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1246. [2018-07-24 14:00:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2018-07-24 14:00:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1784 transitions. [2018-07-24 14:00:16,229 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1784 transitions. Word has length 132 [2018-07-24 14:00:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:16,230 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1784 transitions. [2018-07-24 14:00:16,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:00:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1784 transitions. [2018-07-24 14:00:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 14:00:16,236 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:16,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:16,237 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 14:00:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash 158269423, now seen corresponding path program 1 times [2018-07-24 14:00:16,237 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:16,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:16,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:16,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:16,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:16,595 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:16,595 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 14:00:16,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:16,608 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:16,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:16,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:17,282 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:00:17,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:00:17,282 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:17,283 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:00:17,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:00:17,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:00:17,284 INFO L87 Difference]: Start difference. First operand 1246 states and 1784 transitions. Second operand 3 states. [2018-07-24 14:00:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:20,181 INFO L93 Difference]: Finished difference Result 2702 states and 3999 transitions. [2018-07-24 14:00:20,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:00:20,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-07-24 14:00:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:20,198 INFO L225 Difference]: With dead ends: 2702 [2018-07-24 14:00:20,198 INFO L226 Difference]: Without dead ends: 1462 [2018-07-24 14:00:20,204 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:00:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2018-07-24 14:00:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1459. [2018-07-24 14:00:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2018-07-24 14:00:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2100 transitions. [2018-07-24 14:00:20,261 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2100 transitions. Word has length 190 [2018-07-24 14:00:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:20,262 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 2100 transitions. [2018-07-24 14:00:20,262 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:00:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2100 transitions. [2018-07-24 14:00:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-24 14:00:20,267 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:20,268 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, 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] [2018-07-24 14:00:20,268 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 14:00:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1733906137, now seen corresponding path program 1 times [2018-07-24 14:00:20,269 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:20,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:20,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:20,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:20,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:20,571 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:00:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:00:20,987 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:20,987 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 14:00:21,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:21,006 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:21,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:00:21,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:00:21,855 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:00:21,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:00:21,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:21,856 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:00:21,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:00:21,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:00:21,857 INFO L87 Difference]: Start difference. First operand 1459 states and 2100 transitions. Second operand 5 states. [2018-07-24 14:00:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:26,898 INFO L93 Difference]: Finished difference Result 5532 states and 8354 transitions. [2018-07-24 14:00:26,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:00:26,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-07-24 14:00:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:26,925 INFO L225 Difference]: With dead ends: 5532 [2018-07-24 14:00:26,926 INFO L226 Difference]: Without dead ends: 4079 [2018-07-24 14:00:26,936 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 405 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:00:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2018-07-24 14:00:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 3989. [2018-07-24 14:00:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3989 states. [2018-07-24 14:00:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5594 transitions. [2018-07-24 14:00:27,054 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5594 transitions. Word has length 205 [2018-07-24 14:00:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:27,054 INFO L471 AbstractCegarLoop]: Abstraction has 3989 states and 5594 transitions. [2018-07-24 14:00:27,054 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:00:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5594 transitions. [2018-07-24 14:00:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-24 14:00:27,061 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:27,062 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, 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 14:00:27,062 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 14:00:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1151323007, now seen corresponding path program 1 times [2018-07-24 14:00:27,062 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:27,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:27,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:27,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:27,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 106 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:27,526 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:27,526 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 14:00:27,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:27,535 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:27,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:29,241 WARN L169 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 142 DAG size of output: 28 [2018-07-24 14:00:29,732 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:00:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:30,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:30,612 WARN L169 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-24 14:00:30,850 WARN L169 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-07-24 14:00:30,970 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-07-24 14:00:31,535 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-07-24 14:00:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:32,715 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:32,716 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 14:00:32,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:32,733 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:32,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:33,383 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:33,572 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-07-24 14:00:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:34,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:00:34,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 5] total 28 [2018-07-24 14:00:34,368 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:00:34,369 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:00:34,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:00:34,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2018-07-24 14:00:34,369 INFO L87 Difference]: Start difference. First operand 3989 states and 5594 transitions. Second operand 16 states. [2018-07-24 14:00:34,608 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-07-24 14:00:34,811 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-07-24 14:00:39,695 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-07-24 14:00:42,974 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-07-24 14:01:03,257 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-07-24 14:01:09,943 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 14:01:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:01:13,263 INFO L93 Difference]: Finished difference Result 23340 states and 38672 transitions. [2018-07-24 14:01:13,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-24 14:01:13,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 249 [2018-07-24 14:01:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:01:13,413 INFO L225 Difference]: With dead ends: 23340 [2018-07-24 14:01:13,413 INFO L226 Difference]: Without dead ends: 19357 [2018-07-24 14:01:13,492 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 976 SyntacticMatches, 6 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8107 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2795, Invalid=18961, Unknown=0, NotChecked=0, Total=21756 [2018-07-24 14:01:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19357 states. [2018-07-24 14:01:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19357 to 18167. [2018-07-24 14:01:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18167 states. [2018-07-24 14:01:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18167 states to 18167 states and 23540 transitions. [2018-07-24 14:01:14,211 INFO L78 Accepts]: Start accepts. Automaton has 18167 states and 23540 transitions. Word has length 249 [2018-07-24 14:01:14,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:01:14,212 INFO L471 AbstractCegarLoop]: Abstraction has 18167 states and 23540 transitions. [2018-07-24 14:01:14,212 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:01:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18167 states and 23540 transitions. [2018-07-24 14:01:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-24 14:01:14,224 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:01:14,225 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, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:01:14,225 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 14:01:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1093734570, now seen corresponding path program 1 times [2018-07-24 14:01:14,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:01:14,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:01:14,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:01:14,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:01:14,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:01:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:01:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:01:14,520 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:01:14,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:01:14,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:01:14,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:01:14,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:01:14,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:01:14,521 INFO L87 Difference]: Start difference. First operand 18167 states and 23540 transitions. Second operand 4 states. [2018-07-24 14:01:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:01:17,853 INFO L93 Difference]: Finished difference Result 40371 states and 55044 transitions. [2018-07-24 14:01:17,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:01:17,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-07-24 14:01:17,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:01:17,935 INFO L225 Difference]: With dead ends: 40371 [2018-07-24 14:01:17,935 INFO L226 Difference]: Without dead ends: 22210 [2018-07-24 14:01:18,011 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 14:01:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22210 states. [2018-07-24 14:01:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22210 to 22136. [2018-07-24 14:01:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22136 states. [2018-07-24 14:01:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22136 states to 22136 states and 28367 transitions. [2018-07-24 14:01:18,502 INFO L78 Accepts]: Start accepts. Automaton has 22136 states and 28367 transitions. Word has length 256 [2018-07-24 14:01:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:01:18,503 INFO L471 AbstractCegarLoop]: Abstraction has 22136 states and 28367 transitions. [2018-07-24 14:01:18,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:01:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22136 states and 28367 transitions. [2018-07-24 14:01:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-24 14:01:18,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:01:18,516 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:01:18,516 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 14:01:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash 3879949, now seen corresponding path program 1 times [2018-07-24 14:01:18,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:01:18,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:01:18,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:01:18,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:01:18,518 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:01:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:01:19,044 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 14:01:19,639 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:01:19,950 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:01:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 106 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:20,282 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:01:20,282 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 14:01:20,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:01:20,297 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:01:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:01:20,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:01:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:20,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:01:21,035 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-07-24 14:01:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:21,936 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:01:21,936 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 14:01:21,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:01:21,952 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:01:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:01:22,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:01:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:23,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:01:23,684 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2018-07-24 14:01:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:24,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:01:24,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 5] total 28 [2018-07-24 14:01:24,180 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:01:24,181 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:01:24,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:01:24,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2018-07-24 14:01:24,182 INFO L87 Difference]: Start difference. First operand 22136 states and 28367 transitions. Second operand 16 states. [2018-07-24 14:01:28,509 WARN L169 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 14:01:31,882 WARN L169 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-07-24 14:01:33,323 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-07-24 14:01:33,812 WARN L169 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-07-24 14:01:36,531 WARN L169 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-07-24 14:01:38,112 WARN L169 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-07-24 14:01:41,395 WARN L169 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-07-24 14:01:45,096 WARN L169 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2018-07-24 14:01:45,667 WARN L169 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-07-24 14:01:47,836 WARN L169 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-07-24 14:01:50,372 WARN L169 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-07-24 14:01:51,668 WARN L169 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-07-24 14:01:53,131 WARN L169 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2018-07-24 14:01:58,829 WARN L169 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-07-24 14:02:00,858 WARN L169 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 17 [2018-07-24 14:02:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:02:14,359 INFO L93 Difference]: Finished difference Result 60194 states and 88053 transitions. [2018-07-24 14:02:14,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-24 14:02:14,359 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 259 [2018-07-24 14:02:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:02:14,609 INFO L225 Difference]: With dead ends: 60194 [2018-07-24 14:02:14,609 INFO L226 Difference]: Without dead ends: 38444 [2018-07-24 14:02:14,720 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1015 SyntacticMatches, 5 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6625 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=2537, Invalid=16083, Unknown=12, NotChecked=0, Total=18632 [2018-07-24 14:02:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38444 states. [2018-07-24 14:02:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38444 to 37432. [2018-07-24 14:02:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37432 states. [2018-07-24 14:02:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37432 states to 37432 states and 47432 transitions. [2018-07-24 14:02:16,480 INFO L78 Accepts]: Start accepts. Automaton has 37432 states and 47432 transitions. Word has length 259 [2018-07-24 14:02:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:02:16,480 INFO L471 AbstractCegarLoop]: Abstraction has 37432 states and 47432 transitions. [2018-07-24 14:02:16,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:02:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 37432 states and 47432 transitions. [2018-07-24 14:02:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-24 14:02:16,494 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:02:16,494 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, 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] [2018-07-24 14:02:16,494 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 14:02:16,495 INFO L82 PathProgramCache]: Analyzing trace with hash 701848699, now seen corresponding path program 1 times [2018-07-24 14:02:16,495 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:02:16,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:16,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:16,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:16,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:02:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 107 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-24 14:02:17,347 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:02:17,347 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 14:02:17,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:17,360 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:02:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:17,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:02:21,148 WARN L169 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-07-24 14:02:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:02:21,234 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:02:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:21,433 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:02:21,433 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 14:02:21,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:21,449 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:02:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:21,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:02:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:23,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:02:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:23,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:02:23,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5, 8, 5] total 15 [2018-07-24 14:02:23,519 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:02:23,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 14:02:23,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 14:02:23,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=148, Unknown=2, NotChecked=0, Total=210 [2018-07-24 14:02:23,520 INFO L87 Difference]: Start difference. First operand 37432 states and 47432 transitions. Second operand 10 states. [2018-07-24 14:02:29,943 WARN L169 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-07-24 14:02:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:02:45,551 INFO L93 Difference]: Finished difference Result 92138 states and 123161 transitions. [2018-07-24 14:02:45,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-24 14:02:45,551 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 260 [2018-07-24 14:02:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:02:45,816 INFO L225 Difference]: With dead ends: 92138 [2018-07-24 14:02:45,817 INFO L226 Difference]: Without dead ends: 55092 [2018-07-24 14:02:45,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1028 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=232, Invalid=635, Unknown=3, NotChecked=0, Total=870 [2018-07-24 14:02:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55092 states. [2018-07-24 14:02:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55092 to 53468. [2018-07-24 14:02:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53468 states. [2018-07-24 14:02:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53468 states to 53468 states and 69143 transitions. [2018-07-24 14:02:47,178 INFO L78 Accepts]: Start accepts. Automaton has 53468 states and 69143 transitions. Word has length 260 [2018-07-24 14:02:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:02:47,178 INFO L471 AbstractCegarLoop]: Abstraction has 53468 states and 69143 transitions. [2018-07-24 14:02:47,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 14:02:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 53468 states and 69143 transitions. [2018-07-24 14:02:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-24 14:02:47,193 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:02:47,193 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, 2, 2, 2, 2, 2, 2, 2, 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 14:02:47,193 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 14:02:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1097527773, now seen corresponding path program 1 times [2018-07-24 14:02:47,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:02:47,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:47,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:47,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:02:47,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:02:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 8 proven. 101 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:02:47,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:02:47,652 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:02:47,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:47,661 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:02:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:47,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:02:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:47,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:02:48,091 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-07-24 14:02:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:48,335 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:02:48,335 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:02:48,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:02:48,351 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:02:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:02:48,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:02:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:48,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:02:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:02:49,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:02:49,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 14 [2018-07-24 14:02:49,323 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:02:49,324 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 14:02:49,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 14:02:49,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:02:49,325 INFO L87 Difference]: Start difference. First operand 53468 states and 69143 transitions. Second operand 12 states. [2018-07-24 14:03:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:04,669 INFO L93 Difference]: Finished difference Result 126232 states and 171828 transitions. [2018-07-24 14:03:04,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-24 14:03:04,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 272 [2018-07-24 14:03:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:04,923 INFO L225 Difference]: With dead ends: 126232 [2018-07-24 14:03:04,923 INFO L226 Difference]: Without dead ends: 73150 [2018-07-24 14:03:05,134 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1106 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=963, Invalid=4439, Unknown=0, NotChecked=0, Total=5402 [2018-07-24 14:03:05,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73150 states. [2018-07-24 14:03:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73150 to 69104. [2018-07-24 14:03:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69104 states. [2018-07-24 14:03:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69104 states to 69104 states and 85601 transitions. [2018-07-24 14:03:06,228 INFO L78 Accepts]: Start accepts. Automaton has 69104 states and 85601 transitions. Word has length 272 [2018-07-24 14:03:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:06,228 INFO L471 AbstractCegarLoop]: Abstraction has 69104 states and 85601 transitions. [2018-07-24 14:03:06,228 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 14:03:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 69104 states and 85601 transitions. [2018-07-24 14:03:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-24 14:03:06,269 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:06,269 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:03:06,270 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 14:03:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1062923265, now seen corresponding path program 1 times [2018-07-24 14:03:06,270 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:06,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:06,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:03:06,594 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:03:06,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:03:06,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:03:06,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:03:06,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:03:06,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:03:06,596 INFO L87 Difference]: Start difference. First operand 69104 states and 85601 transitions. Second operand 4 states. [2018-07-24 14:03:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:09,401 INFO L93 Difference]: Finished difference Result 137791 states and 170783 transitions. [2018-07-24 14:03:09,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:03:09,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-07-24 14:03:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:09,570 INFO L225 Difference]: With dead ends: 137791 [2018-07-24 14:03:09,571 INFO L226 Difference]: Without dead ends: 69073 [2018-07-24 14:03:09,686 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:03:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69073 states. [2018-07-24 14:03:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69073 to 69071. [2018-07-24 14:03:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69071 states. [2018-07-24 14:03:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69071 states to 69071 states and 85384 transitions. [2018-07-24 14:03:10,804 INFO L78 Accepts]: Start accepts. Automaton has 69071 states and 85384 transitions. Word has length 350 [2018-07-24 14:03:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:10,805 INFO L471 AbstractCegarLoop]: Abstraction has 69071 states and 85384 transitions. [2018-07-24 14:03:10,805 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:03:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 69071 states and 85384 transitions. [2018-07-24 14:03:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-24 14:03:10,856 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:10,857 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:03:10,857 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 14:03:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1555569344, now seen corresponding path program 1 times [2018-07-24 14:03:10,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:10,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:10,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:10,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:10,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:11,676 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 14:03:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 62 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:03:11,970 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:11,970 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:03:11,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:11,977 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:12,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:03:12,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:12,823 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2018-07-24 14:03:13,340 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-07-24 14:03:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 159 proven. 232 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:03:14,100 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:14,100 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:03:14,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:14,785 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:15,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:03:15,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:15,523 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-07-24 14:03:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 251 proven. 73 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:03:16,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:16,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8, 5, 5] total 33 [2018-07-24 14:03:16,063 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:16,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-24 14:03:16,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-24 14:03:16,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2018-07-24 14:03:16,065 INFO L87 Difference]: Start difference. First operand 69071 states and 85384 transitions. Second operand 23 states. [2018-07-24 14:03:17,999 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-07-24 14:03:18,909 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-07-24 14:03:19,870 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-07-24 14:03:21,372 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-07-24 14:03:22,715 WARN L169 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-07-24 14:03:25,333 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2018-07-24 14:03:26,518 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-07-24 14:03:28,432 WARN L169 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2018-07-24 14:03:30,517 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-07-24 14:03:33,911 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-07-24 14:03:39,063 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2018-07-24 14:03:44,229 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-07-24 14:03:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:51,527 INFO L93 Difference]: Finished difference Result 152351 states and 206525 transitions. [2018-07-24 14:03:51,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-24 14:03:51,527 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 359 [2018-07-24 14:03:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:51,900 INFO L225 Difference]: With dead ends: 152351 [2018-07-24 14:03:51,901 INFO L226 Difference]: Without dead ends: 83290 [2018-07-24 14:03:52,124 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1437 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6749 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=2992, Invalid=17314, Unknown=0, NotChecked=0, Total=20306 [2018-07-24 14:03:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83290 states. Received shutdown request... [2018-07-24 14:03:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83290 to 76997. [2018-07-24 14:03:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76997 states. [2018-07-24 14:03:54,482 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:03:54,488 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:03:54,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:03:54 BoogieIcfgContainer [2018-07-24 14:03:54,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:03:54,489 INFO L168 Benchmark]: Toolchain (without parser) took 237175.63 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,490 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:03:54,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 939.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 143.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,492 INFO L168 Benchmark]: Boogie Preprocessor took 379.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -956.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,493 INFO L168 Benchmark]: RCFGBuilder took 5604.46 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,494 INFO L168 Benchmark]: TraceAbstraction took 230102.95 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -71.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:03:54,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 939.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 143.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 379.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -956.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5604.46 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230102.95 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -71.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 230.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 188.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2271 SDtfs, 35365 SDslu, 5766 SDs, 0 SdLazy, 59510 SolverSat, 14797 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 112.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6942 GetRequests, 6359 SyntacticMatches, 26 SemanticMatches, 557 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23508 ImplicationChecksByTransitivity, 68.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69104occurred 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: 9.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 8098 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 5783 NumberOfCodeBlocks, 5783 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 8941 ConstructedInterpolants, 17 QuantifiedInterpolants, 16522152 SizeOfPredicates, 24 NumberOfNonLiveVariables, 5727 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 5122/6664 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/Problem11_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-03-54-524.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-03-54-524.csv Completed graceful shutdown